JOBNAME: alz 18#4 2004 PAGE: 1 OUTPUT: Tue November 16 22:21:58 2004 lww/alz/88441/03-050RR ORIGINAL ARTICLE The Activities of Daily Living Questionnaire A Validation Study in Patients with Dementia N. Johnson,*† A. Barion,*‡ A. Rademaker,*§ G. Rehkemper,k and S. Weintraub*†‡ Abstract: This study describes the development and validation of the Activities of Daily Living Questionnaire (ADLQ), an informantbased assessment of functional abilities, in patients with probable Alzheimer disease and other forms of dementia. The ADLQ measures functioning in six areas: self-care, household care, employment and recreation, shopping and money, travel, and communication. The ADLQ was administered to 140 caregivers followed longitudinally in the Northwestern Alzheimer’s Disease Center. In a subset of 28 participants, the total ADLQ score and each of the subscales were found to be highly reproducible, with average concordance coefficients of 0.86. Concurrent validity was established by comparing the ADLQ with the Record of Independent Living, a previously validated measure of level of dependency in daily living activities. The ADLQ was also compared with other measures of dementia severity on the initial and annual follow-up visits and was found to be significantly and negatively correlated with the Mini-Mental State Examination and positively correlated with the Clinical Dementia Rating Scale. The ADLQ has high test-retest and concurrent validity and is consistent with other measures of temporal decline in patients with probable Alzheimer disease and other forms of dementia. Key Words: activities of daily living, dementia (Alzheimer Dis Assoc Disord 2004;18:223–230) A s the older population grows, chronic conditions, such as dementia, have become a focus of medical practice. The provision of long-term care for individuals with dementia is emerging as a major public health problem in the foreseeable future. Independent living skills are necessary for functioning in the home and in the community. The functional disability associated with dementia has a major impact on the quality of life, not only of affected patients living in the community but also of their caregivers.1 Functional assessment, therefore, is important in making recommendations about appropriate Received for publication June 19, 2003; accepted April 30, 2004. From the *Cognitive Neurology and Alzheimer’s Disease Center, and the Departments of †Psychiatry and Behavioral Sciences, ‡Neurology, and §Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL; and kWaukesha Memorial Hospital, Waukesha, WI. Supported by National Institute on Aging, Alzheimer’s Disease Core Center grant AG 13854 to Northwestern University, Chicago. Reprints: Nancy Johnson, PhD, Cognitive Neurology and Alzheimer’s Disease Center, Northwestern University Medical School, 320 E. Superior, Searle 11-499, Chicago, IL 60611 (e-mail: johnson-n@northwestern.edu). Copyright Ó 2004 by Lippincott Williams & Wilkins settings of care, measuring disease severity, and determining caregiver needs. For all of these reasons, the assessment of daily living activities is increasingly recognized as a valuable outcome measure in clinical trials.2 Two main types of abilities are measured by functional assessment scales. Basic activities of daily living (ADL) consist of activities that are performed daily, habitually and universally, such as dressing, bathing, and eating. In contrast, instrumental ADL require organization and planning, and include such tasks as shopping, using transportation, preparing meals, handling finances, keeping the house, and using a telephone. Many of the early ADL scales were designed for use in a rehabilitation setting3–5 and thus emphasize basic physical, rather than cognitive, abilities. These scales are less applicable to a dementia population where limitations in ADL are most often the result of cognitive decline, while physical abilities remain relatively intact for an extended time. In addition, most of these scales require clinical observation of the patient and are time-consuming and impractical in an outpatient clinical setting. Several scales have been designed to detect early signs of dementia,6–9 but the utility of these scales in identifying symptoms in later stages of dementia or tracking progression of symptoms after the onset of dementia has not been established. Several scales have been developed specifically for use in the dementia population. The Daily Activities Questionnaire was developed to assess instrumental and self-care activities of daily living in patients with Alzheimer disease (AD).10 This scale is observational and was designed to be completed by an occupational therapist on an inpatient unit. The original 10-item scale was reduced to 5 items ordered along a continuum of difficulty from ‘‘eating’’ to ‘‘finances.’’ This scale has been shown to have good construct and internal validity in assessing clinical progression of AD. However, only a small range of behaviors are rated, and there is no breakdown of specific subscales (eg, communications, finances) which limits its utility in non-Alzheimer’s dementia syndromes. In addition, although this scale demonstrates good validity in the inpatient population, it is not applicable for use in an outpatient clinical setting. The Bristol Activities of Daily Living Scale11 is a caregiver-rated instrument designed specifically for use in the community. While this scale has the advantages of ease of use, test-retest reliability was only fair or moderate on 8 of 22 items. In addition, more than half of the items (13 of 22) on the scale rate basic ADL (eg, selecting food, eating food, selecting drink, drinking); therefore, the total score is heavily weighted by these tasks. Most individuals with dementia would not experience a decline in these areas until the later Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 223 JOBNAME: alz 18#4 2004 PAGE: 2 OUTPUT: Tue November 16 22:21:58 2004 lww/alz/88441/03-050RR Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 Johnson et al stages of illness, and this scale is not likely to be sensitive to early decline in higher level cognitive activities. No provision is made for the calculation of functional subscales, so changes in ADL that occur in patients with neuropsychologically focal dementia syndromes (eg, primary progressive aphasia) would not be easily detected. The Disability Assessment for Dementia scale is a caregiver interview developed for use in clinical trials, which includes items to assess both basic and instrumental ADL.12 The 46-item scale can be broken down into three subdomains; initiation, planning and organization, and performance. This scale has been shown to have good reliability and validity and to be sensitive to decline in performance over a 12-month period.13 While the usefulness of this scale has been demonstrated in clinical trials, potential limitations for use in clinical practice include the interviewbased administration, which may not be feasible in a busy clinical setting, and the absence of questions to assess the impact of focal cognitive decline in areas such as language. This paper describes the validation of the Activities of Daily Living Questionnaire (ADLQ) Scale, an instrument designed to measure ADL in an outpatient clinical population. This scale was originally developed on the basis of clinical experience with dementia patients and awareness of areas of functional decline that are likely to have an impact on ADL. The ADLQ scale was used in a study by Locascio et al14 and has been shown to be consistent with other measures in detecting temporal decline in individuals with probable AD. This scale provides informant-based assessment of functional abilities in dementia patients. In addition to a global impairment score, six subscale scores are calculated to assess decline in the following areas: self-care, household care, employment and recreation, shopping and money, travel, and communication. This scale is applicable to a wide range of dementia syndromes and can be used to track progression of functional decline over time. METHODS The items and categories of activities on the ADLQ scale are shown in the Appendix. The rater, a primary caregiver, is instructed to ‘‘score each item according to the patient’s current level of ability relative to his/her customary performance prior to the onset of dementia symptoms.’’ The primary caregiver was defined as the person identified as having the most frequent contact with, and responsibility for, assisting the patient. Even when the ADLQ is completed at follow-up, the instruction is the same so that the baseline standard for each individual patient does not change over time. The scale is divided into six sections addressing different areas of activity, and each section has from three to six items. Each of the items is rated on a 4-point scale from 0 (no problem) to 3 (no longer capable of performing the activity). For each item, there is also a rating (9) provided for instances in which the patient may never have performed that activity in the past (‘‘Never did this activity’’), stopped the activity prior to the onset of dementia (eg, stopped working before dementia symptoms were apparent), or for which the rater, for a variety of reasons, may not have information (‘‘Don’t know’’). 224 Scoring The total score, which has a range of 0 to 100, is calculated by the formula below: Functional impairment ¼ Sum of all ratings 3 100 3 3 total number of items rated The denominator represents the score that would have been obtained if the most severe level of impairment had been indicated for all items rated (excluding those rated ‘‘9’’). The numerator represents the total of the actual ratings for all items rated (excluding those rated ‘‘9’’). The resultant score represents the level of severity of impairment in ADL. The amount of functional impairment is then rated as ‘‘none to mild’’ (0–33), ‘‘moderate’’ (34–66%), or ‘‘severe’’ (.66%). Functional impairment scores are calculated for each subscale individually and for the total of all items. Participants Archival data from 140 primary caregivers of patients with dementia who completed the ADLQ were obtained from the database of the Northwestern Alzheimer’s Disease Center Clinical Core registry. Primary caregivers included spouses, adult children, siblings and close friends. Creation of the Northwestern Alzheimer’s Disease Center registry was approved by Northwestern University’s Institutional Review Board. Additional data were collected from a subset of caregivers for study 2 (test-retest reliability) and study 3 (concurrent validity), and the specific numbers of participants in each of these studies is described below. The patients had mixed diagnoses of dementia and consisted of the following groups: probable/possible AD (N = 65),15 vascular or mixed dementia (N = 28),16 frontotemporal dementia,17 or primary progressive aphasia (N = 44),18 and other (N = 3). The dementia group included a wide range of severity levels as measured by the Clinical Dementia Rating Scale (CDR)19 (average CDR, 1.0; range, 0.5–3) and the Mini-Mental State Examination (MMSE)20 (average MMSE, 21.7; range, 4–30) at the baseline visit. RESULTS Administration and Response Characteristics None of the caregivers in the study was unable to, or refused to, complete the ADLQ. The average time of completion was between 5 and 10 minutes, and none of the participants reported difficulties in understanding the instructions or individual items. For a subset of 50 participants (25 males and 25 females, randomly selected from the overall group), responses to individual items of the scale were evaluated to determine the number of participants who rated the item as ‘‘Never did this activity’’ or ‘‘Don’t know’’(ND/DK). The item most frequently rated ND/DK was 3A-Employment (42%), most likely because the ND/DK response includes the option ‘‘Retired before illness.’’ The two other items most frequently rated as ND/DK were 2E-Home Repairs (38%) and 5A-Public Transportation (36%). This was accounted for by the fact that many of the patients (females and males) never had responsibility for home repairs or regularly used public transportation. All other items were rated as ND/DK by fewer than 25% of the caregivers q 2004 Lippincott Williams & Wilkins JOBNAME: alz 18#4 2004 PAGE: 3 OUTPUT: Tue November 16 22:22:00 2004 lww/alz/88441/03-050RR Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 (average, 8%). We did not think that any of the individual items were rated as ND/DK with sufficient frequency in either male or female participants to warrant exclusion from the overall ADLQ scale. There were some expected gender differences in individual items rated as ND/DK, but only the Household Care subscale was significantly different between male and female participants (F1,48 = 4.74, p , 0.05). This difference was due to that fact that male participants were rated as ND/DK more frequently than female participants (0%) for the following items: 2A-Preparing Meals (28%), 2B-Setting the Table (16%), 2C-Housekeeping (24%), and 2F-Laundry (44%). Female participants were more frequently rated as ND/DK on item 2E-Home Repairs (52%, compared with 24% for male participants). Because the ADLQ scale is based in part on higher level instrumental ADL, it was expected that differences in the frequency of responses to certain gender-specific items would be present between male and female participants. However, because each participant’s score is based only on the items applicable to that participant, completely eliminating gender-related questions would restrict the scope of the ADLQ and result in a loss of functionally useful information. Study 1. Relationship Between ADLQ Score and Other Measures of Severity (MMSE, CDR), and Changes in ADLQ Over Time Procedure Data from the ADLQ, CDR,19 and MMSE20 were available for 140 participants at the initial and 1-year follow-up visits. Results To determine whether the ADLQ was a valid measure of disease severity, we examined the correlation between MMSE score and ADLQ at initial visit using a Pearson correlation, and these values are presented in Table 1. The ADLQ was found to be highly and negatively correlated with the MMSE,20 a general measure of cognitive impairment. The ADLQ was also compared with the CDR,19 a previously validated measure of clinical progression and staging using a Spearman’s rank correlation, and these results are also given in Table 1. A repeated-measures ANOVA was used to examine change in ADLQ, MMSE, and CDR over time. All measures showed significantly more impairment at the annual follow-up visit (ADLQ: F1,139 = 73.1, p , 0.001; MMSE: F1,139 = 49.1, p , 0.001; CDR: F1,139 = 29.8, p , 0.001) providing further support that the ADLQ is a valid measure of disease progression. Mean change scores for the total ADLQ, subscales, and the MMSE are given in Table 2. The average decline per TABLE 1. Mean Total ADLQ Scores Over Time (N = 140) Visit Time ADLQ [Mean (SD)] CDR [Mean (SD)] Correlation w/ADLQ* MMSE [Mean (SD)] Correlation w/ADLQ* Initial 1 year 33.6 (20.0) 43.5 (21.0) 1.0 (0.5) 1.3 (0.6) r = .50 r = .55 21.7 (5.3) 18.9 (6.7) r = 2.42 r = 2.38 *All p , 0.001. q 2004 Lippincott Williams & Wilkins Activities of Daily Living Questionnaire year on the ADLQ (9.8) is consistent with the amount of decline found on the Disability Assessment for Dementia scale (11.6) over a 12-month period.13 All of the individual subscales also showed a significant decline (all p , 0.001), although the greatest change was noted on measures of instrumental ADL such as shopping/money, travel, and household care. To determine whether decline on the ADLQ was related to baseline level of functioning, a regression analysis was conducted using baseline MMSE to predict change in ADLQ. The results of the regression indicated no relationship between baseline MMSE (F1,138 = 2.00, p = not significant) and amount of decline in ADLQ. Study 2. Test–Retest Reliability Procedure Twenty-eight caregivers of patients with a clinical diagnosis of probable AD based on the NINCDS-ADRDA criteria15 participated in the study of test-retest reliability. All 28 participants had completed the ADLQ as part of a caregiver questionnaire packet at the time of the patient’s regularly scheduled research appointment. A second ADLQ was mailed to the participants’ home 1 week after the appointment with written instructions to complete the ADLQ and return it by mail. The interval between the initial questionnaire and completed return of the second questionnaire varied between 2 weeks to 2 months, with the average time equivalent to 25.6 days (SD = 12.2 days). To determine whether participants may have declined during the test-retest interval, a correlation between the test-retest interval and change in ADLQ score was performed. The results of this analysis showed a nonsignificant correlation (r = 0.16; p = 0.40), suggesting an absence of clinically significant decline during the test-retest interval. The total score and each of the subscale scores at time 1 and time 2 were analyzed for test-retest reliability. The primary statistical method used to compare the test and retest measures was Lin’s concordance coefficient.21 This measure has a value of ‘‘1’’ if the test and retest scores are identical, and a value of ‘‘0’’ if the measures are not reproducible. Confidence intervals indicate the likely range of the true concordance. Mean test and retest scores were compared using the paired t test.22 The Pearson correlation coefficent was also calculated and tested against zero using the t test. A nonsignificant paired t test and a significant Pearson correlation coefficient are necessary but not sufficient conditions for the test and retest scores to be TABLE 2. Mean ADLQ Change Scores at 12 Months (N = 140) ADLQ Scales Mean (SD) Self-care Household care Shopping/money Employment/recreation Travel Communication Total ADLQ change MMSE 26.6 211.6 213.7 27.8 212.3 28.2 29.8 22.7 (13.5) (33.2) (27.2) (24.0) (23.9) (16.5) (13.8) (4.6) 225 JOBNAME: alz 18#4 2004 PAGE: 4 OUTPUT: Tue November 16 22:22:01 2004 lww/alz/88441/03-050RR Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 Johnson et al similar. Kappa scores were used to examine test-retest reliability individually for each test question. Similar to the concordance coefficient, the closer the kappa score is to ‘‘1,’’ the greater the agreement between time 1 and time 2. Results Table 3 gives the means, standard errors and ranges for the test and retest measures for each subscale. The statistics are also included for the difference between the two measures. The p value for the paired t test will not be significant (p . 0.05) if the test and retest measures have equal means. Table 4 gives the correlation coefficient, the concordance coefficient, and the 95% confidence interval for the concordance coefficient. These results indicate that the total ADLQ score is highly reproducible, with a narrow confidence interval of high values for the concordance coefficient. Except for the Employment and Recreation subscale, all other subscales show excellent reproducibility, with concordance coefficients of 0.86 or higher, and lower confidence limits exceeding 0.73. Although still within an acceptable range, the Employment and Recreation subscale showed slightly less reproducibility, with a concordance coefficient lower than the other subscales. This discrepancy was due primarily to the fact that four caregivers rated the Employment question as ‘‘No longer works’’ (score = 3) at time 1 and then rated it as ‘‘Never worked OR retired before illness OR don’t know’’ (score = 9) at time 2. Kappa scores to determine test-retest reliability for individual items were also calculated and are given in Table 5. Over half of the test items (54%) would be categorized23 as having ‘‘good’’ Kappa scores (0.61–0.80), 21% have ‘‘very good’’ scores (0.81–1.0), and 25% had ‘‘moderate’’ Kappa scores (0.41–0.60). None of the kappa scores were below the moderate range. Study 3. Comparison of ADLQ and RIL Scores Procedure Concurrent validity of the ADLQ scale was assessed by comparing ADLQ scores with those of a previously validated informant-completed instrument, the Record of Independent Living (RIL).24 The RIL is divided into three sections (Activities, Communication, Behavior). For the Activities and Communications sections, percent scores represent the degree to which the patient requires assistance with a variety of ADL. This is a different way of measuring severity of functional impairment from the ADLQ. The Behavior section requires caregivers to rate a list of behavioral features in two ways: whether or not they were present prior to the onset of dementia and whether or not they were present after the onset of dementia. The three RIL subsections were compared with the ADLQ subscales and total score using Pearson correlation coefficients. Because the ADLQ does not measure behavioral changes, we expected a high correlation between the ADLQ and the Activities and Communication sections of the RIL, and a low correlation between the behavior section of the RIL and the ADLQ. Twenty-nine caregivers of patients with mixed dementia diagnoses completed the RIL and ADLQ at the same visit. The diagnostic breakdown of the patients was as follows: 15 probable AD, 1 possible AD, 5 vascular dementia, 5 frontotemporal dementia FTD, 3 primary progressive aphasia. The order of completion of the scales was randomized among participants. Results The results of the correlation analysis are given in Table 6. As seen in Table 6, the total ADLQ score and Activities section of the RIL were highly correlated (p , 0.001). All of the ADLQ subscales were also significantly correlated with the RIL Activities section. The Communication section of the RIL was highly correlated with the Communication subscale of the ADL Scale (p , 0.001). Correlations of the RIL Behavior subsection with the ADLQ were minimal and ranged between 0.30 and 0.52. This analysis supports the convergent validity and specificity of the ADLQ by demonstrating that: 1) the total ADLQ correlates highly with a previously validated questionnaire measuring daily living activities in individuals with dementia; 2) the Communication subscale correlates highly with the Communication section of the RIL; 3) there is minimal correlation between the ADLQ subscales and a measure of behavioral change. DISCUSSION This study describes the development and validation of the ADLQ, a measure of functional capacity in patients with probable AD and other forms of dementia. This scale has high test-retest and concurrent validity, and has been shown to accurately detect temporal decline in individuals with probable Alzheimer’s Disease both in this and a previous study.14 In TABLE 3. Test-Retest Reliability Values for Each ADLQ Subscale and Total Score (N = 28) Test Time 1* Subscale Self-care Household Employment Shopping Travel Communication Total Test Time 2 Difference Mean (SD) Range Mean (SD) Range Mean (SD) 17.4 39.9 47.9 47.1 46.5 40.7 38.5 0–67 0–100 0–92 0–100 0–100 0–87 0–81 19.3 44.0 50.2 49.3 45.4 42.6 39.6 0–92 0–100 0–100 0–100 0–100 0–93 0–81 1.9 4.0 2.3 2.4 21.2 1.9 1.1 (19.6) (33.4) (28.9) (39.7) (32.9) (22.9) (23.9) (20.7) (33.1) (28.2) (34.7) (31.1) (23.9) (22.4) (06.8) (13.8) (23.7) (18.5) (16.6) (10.5) (06.4) Range p 211–25 220–47 234–100 234–50 227–45 213–27 29–17 .16 .13 .61 .50 .71 .35 .37 *Average time between test 1 and 2 was 25.6 days (range, 14–60 days). 226 q 2004 Lippincott Williams & Wilkins JOBNAME: alz 18#4 2004 PAGE: 5 OUTPUT: Tue November 16 22:22:03 2004 lww/alz/88441/03-050RR Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 TABLE 4. Correlation and Concordance Coefficients of Test-Retest Reliability (N = 28) Subscale Correlation Coefficient Significance (p) Self-care Household Employment Shopping Travel Communication Total 0.95 0.92 0.65 0.89 0.87 0.90 0.96 ,0.001 ,0.001 ,0.001 ,0.001 ,0.001 ,0.001 ,0.001 95% Concordance Confidence Coefficient Interval 0.94 0.91 0.65 0.88 0.86 0.90 0.96 0.87–0.97 0.81–0.96 0.38–0.82 0.76–0.94 0.73–0.93 0.79–0.95 0.92–0.98 addition, it is an informant-based rating that is easy to administer and well suited for an outpatient clinical setting. The scale measures functioning in six areas: self-care, household care, employment and recreation, shopping and money, travel, and TABLE 5. Kappa Scores for Items On the ADLQ Item Self-care Eating Dressing Bathing Elimination Taking pills Personal appearance Household care Meal preparation Setting table Housekeeping Home maintenance Home repairs Laundry Employment and recreation Employment Recreation Organizations Travel Shopping and money Food shopping Handling cash Managing finances Travel Public transportation Driving Mobility in neighborhood Travel outside familiar Communication Using telephone Talking Understanding Reading Writing Kappa Score 0.91 0.81 0.65 * 0.78 0.42 0.47 0.73 0.77 0.53 0.64 0.78 1.00 0.67 0.86 0.85 0.70 0.66 0.60 0.58 0.92 0.76 0.54 0.71 0.71 0.63 0.42 0.74 *Kappa score for this item = 0 because all but two respondents rated the item as ‘‘0’’ for both time 1 and time 2. q 2004 Lippincott Williams & Wilkins Activities of Daily Living Questionnaire TABLE 6. Correlation between ADLQ and RIL Demonstrating Concurrent Validity (N = 29) Correlation Coefficients ADL Subscales Activities RIL Subscales Communications Behavior Self-care Household Employment Shopping Travel Communication Total ADL 0.75† 0.84† 0.80† 0.79† 0.72† 0.69† 0.91† 0.46* 0.67† 0.45* 0.62† 0.39* 0.89† 0.71† 0.32 0.37 0.41* 0.52* 0.30 0.39* 0.46* *p , 0.05. †p , 0.001. communication. The calculation of subscale scores allows for the detection of impairments and identification of preserved areas of functioning in focal dementia syndromes (eg, primary progressive aphasia), where decline may not be consistent across functional domains or may differ in pattern depending on the nature of the dementia.18 Unlike the majority of other scales currently available, the ADLQ measures the patient’s ability to carry out both basic (eg, self-care) and instrumental (eg, employment) ADL and is sensitive to detecting mild decline as well as more severe symptoms of disease progression. In addition, because the scale is rated as a change from the patient’s typical baseline (ie, instructions are to compare with the patient’s level of ability in each activity prior to the onset of dementia), it allows for flexibility in scoring so that activities that were never part of the patient’s behavioral repertoire are not counted in the total score. This also helps correct for gender differences in customary responsibilities in this older population. The ADLQ was sensitive to functional changes in individuals with mild to moderate dementia severity as measured by a dementia screening measure (MMSE) well as by a standardized rating scale (CDR). In addition, the ADLQ was applicable to a wide range of dementia diagnoses. Although we did not include a sample of individuals with mild cognitive impairment without dementia, it seems that the items may not be sufficiently sensitive to detect changes in functional capacity in that population without modifications. Such modifications are being considered, however, because of the need for ADL measures sensitive to early functional change in older individuals at a time when standardized neuropsychological measures may not detect abnormalities. Most ADL scales have been designed to detect functional changes associated with AD since it is the most common cause of dementia in the elderly. The ADLQ also measures changes in communication ability and may be useful in detecting functional decline in patients with PPA or other focal dementia syndromes. Individuals with these deficits may have difficulties in a variety of activities due to these primary deficits; thus, the total score may show change, but the groups are unlikely to be distinguished on the basis of subscale score differences. Further studies are required on larger samples of patients with different forms of dementia to determine if there 227 JOBNAME: alz 18#4 2004 PAGE: 6 OUTPUT: Tue November 16 22:22:04 2004 lww/alz/88441/03-050RR Johnson et al Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 are distinctive profiles on this measure. In addition, although the current sample size was not sufficient for a principal components analysis of the ADLQ subscales, additional data are being collected so that this issue can be addressed in a future study. One potential limitation of the ADLQ was that it was developed on the basis of clinical experience and there was no caregiver involvement in the creation of the specific test items. Although the scale was developed primarily for use by clinicians and, in that regard, has been shown to have good reliability and validity, a future study may be warranted to determine the degree to which ADLQ test questions correspond to areas of concern raised by caregivers, and whether scores on the ADLQ can be used in long-term care and treatment planning. The ADLQ is a useful adjunct to the evaluation of the individual with dementia. It provides a measure of the extent of functional decline that can be measured over time. This provides valuable information that physicians can potentially use to assess the impact of pharmacological treatment on the course of the dementia. It also can be used to counsel caregivers about areas of daily living that may require more support or intervention. APPENDIX. Activities of Daily Living Questionnaire (ADLQ) Instructions: circle one number for each item 1. Self-care activities A. Eating 0 = No problem 1 = Independent, but slow or some spills 2 = Needs help to cut or pour; spills often 3 = Must be fed most foods 9 = Don’t know B. Dressing 0 = No problem 1 = Independent, but slow or clumsy 2 = Wrong sequence, forgets items 3 = Needs help with dressing 9 = Don’t know C. Bathing 0 = No problem 1 = Bathes self, but needs to be reminded 2 = Bathes self with assistance 3 = Must be bathed by others 9 = Don’t know D. Elimination 0 = Goes to the bathroom independently 1 = Goes to the bathroom when reminded; some accidents 2 = Needs assistance for elimination 3 = Has no control over either bowel or bladder 9 = Don’t know E. Taking pills or medicine 0 = Remembers without help 1 = Remembers if dose is kept in a special place 2 = Needs spoken or written reminders 3 = Must be given medicine by others 9 = Does not take regular pills or medicine OR Don’t know 228 APPENDIX. (continued) Activities of Daily Living Questionnaire (ADLQ) Instructions: circle one number for each item F. Interest in personal appearance 0 = Same as always 1 = Interested if going out, but not at home 2 = Allows self to be groomed, or does so on request only 3 = Resists efforts of caretaker to clean and groom 9 = Don’t know 2. Household care A. Preparing meals, cooking 0 = Plans and prepares meals without difficulty 1 = Some cooking, but less than usual, or less variety 2 = Gets food only if it has already been prepared 3 = Does nothing to prepare meals 9 = Never did this activity OR Don’t know B. Setting the table 0 = No problem 1 = Independent, but slow or clumsy 2 = Forgets items or puts them in the wrong place 3 = No longer does this activity 9 = Never did this activity OR Don’t know C. Housekeeping 0 = Keeps house as usual 1 = Does at least half of his/her job 2 = Occasional dusting or small jobs 3 = No longer keeps house 9 = Never did this activity OR Don’t know D. Home maintenance 0 = Does all tasks usual for him/her 1 = Does at least half of usual tasks 2 = Occasionally rakes or some other minor job 3 = No longer does any maintenance 9 = Never did this activity OR Don’t know E. Home repairs 0 = Does all the usual repairs 1 = Does at least half of usual repairs 2 = Occasionally does minor repairs 3 = No longer does any repairs 9 = Never did this activity OR Don’t know F. Laundry 0 = Does laundry as usual (same schedule, routine) 1 = Does laundry less frequently 2 = Does laundry only if reminded; leaves out detergent, steps 3 = No longer does laundry 9 = Never did this activity OR Don’t know 3. Employment and recreation A. Employment 0 = Continues to work as usual 1 = Some mild problems with routine responsibilities 2 = Works at an easier job or part-time; threatened with loss of job 3 = No longer works 9 = Never worked OR retired before illness OR Don’t know B. Recreation 0 = Same as usual 1 = Engages in recreational activities less frequently 2 = Has lost some skills necessary for recreational activities (eg, bridge, golfing); needs coaxing to participate q 2004 Lippincott Williams & Wilkins JOBNAME: alz 18#4 2004 PAGE: 7 OUTPUT: Tue November 16 22:22:05 2004 lww/alz/88441/03-050RR Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 APPENDIX. (continued) Activities of Daily Living Questionnaire (ADLQ) Instructions: circle one number for each item 3 = No longer pursues recreational activities 9 = Never engaged in recreational activities OR Don’t know C. Organizations 0 = Attends meetings, takes responsibilities as usual 1 = Attends less frequently 2 = Attends occasionally; has no major responsibilities 3 = No longer attends 9 = Never participated in organizations OR Don’t know D. Travel 0 = Same as usual 1 = Gets out if someone else drives 2 = Gets out in wheelchair 3 = Home- or hospital-bound 9 = Don’t know 4. Shopping and money A. Food shopping 0 = No problem 1 = Forgets items or buys unnecessary items 2 = Needs to be accompanied while shopping 3 = No longer does the shopping 9 = Never had responsibility in this activity OR Don’t know B. Handling cash 0 = No problem 1 = Has difficulty paying proper amount, counting 2 = Loses or misplaces money 3 = No longer handles money 9 = Never had responsibility for this activity OR Don’t know C. Managing finances 0 = No problem paying bills, banking 1 = Pays bills late; some trouble writing checks 2 = Forgets to pay bills; has trouble balancing checkbook; needs help from others 3 = No longer manages finances 9 = Never had responsibility in this activity OR Don’t know 5. Travel A. Public transportation 0 = Uses public transportation as usual 1 = Uses public transportation less frequently 2 = Has gotten lost using public transportation 3 = No longer uses public transportation 9 = Never used public transportation regularly OR Don’t know B. Driving 0 = Drives as usual 1 = Drives more cautiously 2 = Drives less carefully; has gotten lost while driving 3 = No longer drives 9 = Never drove OR Don’t know C. Mobility around the neighborhood 0 = Same as usual 1 = Goes out less frequently 2 = Has gotten lost in the immediate neighborhood 3 = No longer goes out unaccompanied 9 = This activity has been restricted in the past OR Don’t know Activities of Daily Living Questionnaire APPENDIX. (continued) Activities of Daily Living Questionnaire (ADLQ) Instructions: circle one number for each item D. Travel outside familiar environment 0 = Same as usual 1 = Occasionally gets disoriented in strange surroundings 2 = Gets very disoriented but is able to manage if accompanied 3 = No longer able to travel 9 = Never did this activity OR Don’t know 6. Communication A. Using the telephone 0 = Same as usual 1 = Calls a few familiar numbers 2 = Will only answer telephone (won’t make calls) 3 = Does not use the telephone at all 9 = Never had a telephone OR Don’t know B. Talking 0 = Same as usual 1 = Less talkative; has trouble thinking of words or names 2 = Makes occasional errors in speech 3 = Speech is almost unintelligible 9 = Don’t know C. Understanding 0 = Understands everything that is said as usual 1 = Asks for repetition 2 = Has trouble understanding conversations or specific words occasionally 3 = Does not understand what people are saying most of the time 9 = Don’t know D. Reading 0 = Same as usual 1 = Reads less frequently 2 = Has trouble understanding or remembering what he/she has read 3 = Has given up reading 9 = Never read much OR Don’t know E. Writing 0 = Same as usual 1 = Writes less often; makes occasional spelling errors 2 = Signs name but no other writing 3 = Never writes 9 = Never wrote much OR Don’t know Scoring: For each section (eg, self-care, household care, etc.), count the total number of questions answered (ie, questions that are NOT rated as ‘‘9,’’ Don’t know). Multiply the total number of questions answered by 3. This equals the total points possible for that section. Add up the total score (ie, the sum of the responses) for that section and divide by the total points possible. Multiply by 100 to get the percent impairment. EXAMPLE: If the questions were answered as follows in section 1: A. 0 B. 2 C. 9 D. 0 E. 1 F. 9 (continued on next page) q 2004 Lippincott Williams & Wilkins 229 JOBNAME: alz 18#4 2004 PAGE: 8 OUTPUT: Tue November 16 22:22:06 2004 lww/alz/88441/03-050RR Alzheimer Dis Assoc Disord Volume 18, Number 4, October–December 2004 Johnson et al APPENDIX. 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