LEAD.DOC
VARIABLE
1
COLUMN
1-3
RECORD
1
DESCRIPTION
IDENTIFICATION NUMBER
2
5
1
RECORD NUMBER
3
7
1
AREA - RESIDENCE ON AUG'72
1=0-1 MILES FROM SMELTER
2=1-2.5 MILES
3=2.5-4.1 MILES
4
9-12
1
AGE E.G. 1011=10 YEARS 11 MONTHS
5
14
1
SEX
1=MALE
2=FEMALE
VARIABLES 6-19 CONTAIN IQ TEST RESULTS
6
16-17
1
INF - INFORMATION SUBTEST IN WISC AND WPPSI
7
WPPSI
19-20
1
COMP - COMPREHENSION SUBTEST IN WISC AND
8
22-23
1
AR - ARITHMETIC SUBTEST IN WISC AND WPPSI
9
25-26
1
DS - DIGIT SPAN SUBTEST(WISC) AND SENTENCE
COMPLETION(WPPSI)
10
OF
28-29
1
V/RAW - RAW SCORE/VERBAL IQ (THIS IS TOTAL
SCORES 5-8)
11
WPPSI
31-32
1
PC - PICTURE COMPLETION SUBTEST IN WISC AND
12
34-35
1
BD - BLOCK DESIGN SUBTEST IN WISC AND WPPSI
13
HOUSE
37-38
1
OA - OBJECT ASSEMBLY SUBTEST(WISC), ANIMAL
SUBTEST(WPPSI)
14
15
SCORES
40-41
1
COD - CODING SUBTEST(WISC), GEOMETRIC DESIGN
SUBTEST(WPPSI)
43-44
1
P/RAW - RAW SCORE/PERFORMANCE IQ (TOTAL OF
IN 10-13)
16
STATUS
46-47
1
HH/INDEX - HOLLINGSHEAD INDEX OF SOCIAL
17
49-51
1
IQV - VERBAL IQ
18
53-55
1
IQP - PERFORMANCE IQ
19
IQV
57-59
1
IQF - FULL SCALE IQ (NOT SUM OR AVERAGE OF
AND IQP)
20
61
1
TYPE OF IQ TEST
1=WISC 2=WPPSI
(WISC USUALLY GIVEN TO CHILDREN GE 5 YRS 1
MONTH
OF AGE
WPPSI USUALLY GIVEN TO CHILDREN LE 5YRS OF
AGE)
21
63
1
GROUP - BLOOD LEAD LEVEL GROUP
1=BLOOD LEAD LEVELS BELOW 40
MICROGRAMS/100ML IN
BOTH 1972 & 1973
2=BLOOD LEAD LEVELS GREATER THAN OR EQUAL
TO
40 MICROGRAMS/100ML
IN BOTH 72 & 73 OR A LEVEL GREATER THAN
OR
EQUAL TO 40
IN 73 ALONE (3 CASES ONLY)
3=BLOOD LEAD LEVELS GREATER THAN OR EQUAL
TO
40 MICROGRAMS/100ML
IN 72 AND LESS THAN 40 IN 73
22
IN72
65-66
1
LD72 - BLOOD LEAD VALUES (MICROGRAMS/100ML )
MISSING=99
23
IN 73
68-69
1
LD73 - BLOOD LEAD VALUES (MICROGRAMS/100ML )
24
WITHIN
71
1
FST2YRS - DID CHILD LIVE FOR 1ST 2 YRS
1 MILE OF SMELTER
25
73-74
1
TOTYRS - TOTAL NUMBER OF YEARS SPENT WITHIN
4.1 MILES OF SMELTER
26
1-3
2
IDENTIFICATION NUMBER
27
5
2
RECORD NUMBER
VARIABLES 28-32 CONTAIN SYMPTOM DATA (AS REPORTED BY PARENTS)
28
7
2
PICA
1=YES
2=NO
29
9
2
COLIC
1=YES
2=NO
30
11
2
CLUMSINESS
1=YES
31
13
2
IRRITABILITY
32
15
2
CONVULSIONS
1=YES
1=YES
2=NO
2=NO
2=NO
VARIABLES 33-40 CONTAIN NEUROLOGICAL TEST DATA
IF THE DATA IS MISSING THERE IS A -1.
33
TAPPING
17-18
2
# OF TAPS FOR RIGHT HAND IN THE 2-PLATE
TEST (#TAPS IN ONE 10 SECOND TRIAL)
MISSING=99
34
20-21
TAPPING TEST
2
# OF TAPS FOR LEFT HAND IN THE 2-PLATE
(#TAPS IN ONE 10 SECOND TRIAL)
MISSING=99
35
23-24
(MILLISECONDS)
2
VISUAL REACTION TIME RIGHT HAND
MISSING=99
36
26-27
2
VISUAL REATION TIME LEFT HAND (MILLISECONDS)
MISSING=99
37
29-30
(MILLISECONDS)
2
AUDITORY REACTION TIME RIGHT HAND
MISSING=99
38
32-33
(MILLISECONDS)
2
AUDITORY REACTION TIME LEFT HAND
MISSING=99
39
35-36
2
FINGER-WRIST TAPPING TEST RIGHT HAND
(# TAPS IN ONE 10 SECOND TRIAL)
MISSING=99
40
38-39
2
FINGER-WRIST TAPPING TEST LEFT HAND
(#TAPS IN ONE 10 SECOND TRIAL)
MISSING=99
41
41-42
HYPERACTIVITY
2
WWPS - WERRY-WEISS-PETERS SCALE FOR
0=NO ACTIVITY . . . . 4=SEVERLY HYPERACTIVE
(AS REPORTED BY PARENTS)
MISSING=99