Original Research ajog.org OBSTETRICS The impact of a daily smartphone-based feedback system among women with gestational diabetes on compliance, glycemic control, satisfaction, and pregnancy outcome: a randomized controlled trial Hadas Miremberg, MD; Tal Ben-Ari, MD; Tal Betzer, MD; Hagit Raphaeli, MD; Rose Gasnier, MD; Giulia Barda, MD; Jacob Bar, MD, MSc; Eran Weiner, MD BACKGROUND: Patient compliance and tight glycemic control have been demonstrated to improve outcome in pregnancies complicated by gestational diabetes mellitus. The use of advanced technological tools, including smartphone-based platforms, to improve medical care and outcomes has been demonstrated in various fields of medicine, but only a few small studies were performed with gestational diabetes mellitus patients. OBJECTIVE: We aimed to study the impact of introducing a smartphone-based daily feedback and communication platform between gestational diabetes mellitus patients and their physicians, on patient compliance, glycemic control, pregnancy outcome, and patient satisfaction. STUDY DESIGN: This is a prospective, single-center, randomized controlled trial. Newly diagnosed gestational diabetes mellitus patients presenting to our multidisciplinary diabetes-in-pregnancy clinic were randomized to: (1) routine biweekly prenatal clinic care (control group); or (2) additional daily detailed feedback on their compliance and glycemic control from the clinic team via an application installed on their smartphone (smartphone group). The primary outcome was patient compliance defined as the actual blood glucose measurements/instructed measurements 100. The secondary outcomes included diabetes-control parameters, pregnancy, and neonatal outcomes. The study was adequately powered to detect a 20% difference in patient compliance, based on a Introduction Gestational diabetes mellitus (GDM) prevalence is estimated to complicate 8-9% of all pregnancies,1,2 and is rising due to an increased rate of obesity and sedentary lifestyle.3,4 Patients with GDM have a higher risk for developing preeclampsia,5 shoulder dystocia, birth Cite this article as: Miremberg H, Ben-Ari T, Betzer T, et al. The impact of a daily smartphone-based feedback system among women with gestational diabetes on compliance, glycemic control, satisfaction, and pregnancy outcome: a randomized controlled trial. Am J Obstet Gynecol 2018;218:453.e1-7. 0002-9378/$36.00 ª 2018 Elsevier Inc. All rights reserved. https://doi.org/10.1016/j.ajog.2018.01.044 preliminary phase that demonstrated 70% baseline compliance to glucose measurements. RESULTS: A total of 120 newly diagnosed gestational diabetes mellitus patients were analyzed. The 2 groups did not differ in terms of age, parity, education, body mass index, family history, maternal comorbidities, oral glucose tolerance test values, and hemoglobin A1C at randomization. The smartphone group demonstrated higher level of compliance (84 0.16% vs 66 0.28%, P < .001); lower mean blood glucose (105.1 8.6 mg/dL vs 112.6 7.4 mg/dL, P < .001); lower rates of off-target measurements both fasting (4.7 0.4% vs 8.4 0.6%, P < .001) and 1-hour postprandial (7.7 0.8% vs 14.3 0.8%, P < .001); and a lower rate of pregnancies requiring insulin treatment (13.3% vs 30.0%, P ¼ .044). The rates of macrosomia, neonatal hypoglycemia, shoulder dystocia, and other delivery and neonatal complications did not differ between the groups. Patients in the smartphone group reported excellent satisfaction from the use of the application and from their overall prenatal care. CONCLUSION: Introduction of a smartphone-based daily feedback and communication platform between gestational diabetes mellitus patients and the multidisciplinary diabetes-in-pregnancy clinic team improved patient compliance and glycemic control, and lowered the rate of insulin treatment. Key words: GDM, gestational diabetes melitus, glycemic control, pa- tient compliance, patient satisfaction, smartphone injury, and cesarean delivery.6 GDM is also associated with an increased risk for early and late neonatal complications.7,8 Tight glycemic control in GDM patients has been shown in numerous trials to reduce maternal, fetal, and neonatal complications.9,10 The management of patients with GDM poses a unique challenge, mainly due to the limited time available for potential interventions between the time of the diagnosis and delivery. Furthermore, the management is primarily based on self-performed blood glucose (BG) monitoring and reporting,11,12 and clinical decisions, such as the initiation of pharmaceutical therapy and timing of delivery, are based on these measurements. Patient compliance with BG monitoring as well as tight glycemic control have been demonstrated to play a pivotal role in determining pregnancy Telemedicine and outcome.10,13,14 advanced technology were shown to improve glycemic control in the nonpregnant diabetic population.15,16 However, only small scaled studies concerning the incorporation of advanced technological platforms for GDM patients were published.17,18 Moreover, the evidence regarding the use of smartphone technology, compared to standard care, is scarce.19 Therefore, in light of the smartphone revolution of recent years, we aimed to fill this gap by studying the effect of a daily smartphone-based feedback system in the care of GDM patients on APRIL 2018 American Journal of Obstetrics & Gynecology 453.e1 Original Research OBSTETRICS AJOG at a Glance Why was this study conducted? To resolve uncertainty as to whether smartphone-based daily feedback is effective in improving gestational diabetes mellitus patient compliance and glycemic control. Key findings Smartphone-based daily feedback between gestational diabetes mellitus patients and physicians improved patient compliance and glycemic control, and lowered the rate of insulin treatment. What does this add to what is known? This study adds information about the use of smartphone-based feedback between gestational diabetes mellitus patients and their physicians on improving patient compliance and glycemic control, and lowering the rate of insulin treatment. patient compliance, glycemic control, and pregnancy outcome. Materials and Methods Population A randomized controlled trial was conducted over a period of 12 months (May 2016 through May 2017) at a single, tertiary, university-affiliated medical center. The study was approved by the local institutional review board (no. 0037-16-WOMC, 2/2016; clinical-trials. gov identifier NCT02783612). Eligibility was limited to women aged 18-45 years, singleton gestations, with no pregestational diabetes (per history and per first-trimester fasting glucose assessment), and first diabetes-inpregnancy clinic visit <34 gestational weeks. As per the design of the study, all patients were also required to speak English, at least to a level that enabled them to use the application and communicate with the clinic team. According to our departmental protocol, GDM is diagnosed using the 2-step process.12 The first step is screening at 24-28 weeks of gestation using 50-g, 1-hour glucose challenge test. Women whose glucose levels are >140 mg/dL undergo a 100-g, 3-hour oral glucose tolerance test (OGTT). GDM is diagnosed in women who have 2 abnormal values on the 3-hour OGTT (fasting 95 mg/dL, 1-hour 180 mg/dL, 2-hour 155 mg/dL, 3-hour 140 mg/dL).20 Additionally, women with 1 abnormal value in the OGTT and an additional risk factor (obesity, GDM in a previous pregnancy, or a first-degree family member with diabetes mellitus type 2) are also diagnosed with GDM, as it was previously shown that these patients are also at a significantly higher risk of adverse perinatal outcome.21 Study design and group assignment Patients diagnosed with GDM who owned a smartphone were approached for recruitment during their first visit in our prenatal multidisciplinary diabetesin-pregnancy clinic. Our clinic accepts patients screened for GDM in low-risk community centers by their primary obstetricians. According to our local guidelines, GDM patients are referred to a high-risk clinic upon diagnosis for the remaining prenatal care. Therefore, all patients recruited to this study were recruited upon GDM diagnosis and had no prior intervention. After obtaining written informed consent, patients were randomly assigned either to the intervention group (smartphone group) or to the control group in a 1:1 ratio. A blocked randomization scheme was created using a computergenerated list of random numbers. The routine prenatal care provided by our diabetes-in-pregnancy clinic is composed of a first visit, subsequent biweekly visits up to 35 weeks of gestation, and weekly visits from 35 weeks of 453.e2 American Journal of Obstetrics & Gynecology APRIL 2018 ajog.org gestation until delivery. The maternal-fetal medicine specialist, according to each patient’s individual data, can modify the appointment frequency, according to the individual patients’ glycemic control. During the first visit, the patient receives consultation from a maternal-fetal medicine specialist, education regarding the proper use of the glucometer by a trained nurse, and dietary counseling by a certified dietician, regarding the principles of proper nutrition in GDM and the planning of a weekly menu. In addition, patients receive counseling regarding recommended physical activity (moderateintensity exercise 3 times a week for 20-45 minutes each time).22e24 Subsequent biweekly visits include blood pressure monitoring, urine dipstick for proteinuria, reviewing of the BG measurements, and decision-making regarding the need for additional therapies, 20-minute nonstress test, and a sonogram for fetal weight, amniotic fluid volume, and biophysical profile. Patients noncompliant to physical activity recommendation are counseled again. Patients are instructed to monitor BG 4 times a day (once at morning fasting and after each primary meal), and manually record the measurements on a paper diary for review with their physician at each visit. Patients allocated to the control group received the aforementioned care. Patients assigned to the smartphone group received our standard care, and had an application installed on their smartphones. The application (https:// www.glucosebuddy.com) is web-based, freely available, simple to use, and available during the study period for all smartphone users. All patients received a 10-minute demonstration regarding the use of the application from one of our research coordinators, in addition to a detailed information brochure. Each patient documented each of her BG measurements using the application, which generated a daily report transmitted by e-mail every evening to our computerized research database. Every evening (including weekends), the patient received via e-mail individualized feedback from our clinic team regarding her daily glycemic control. This feedback could include reassurance ajog.org and positive messaging, dietary tips in attempts to optimize specific off-target measurements, modifications in insulin treatment, or alerts to reschedule an earlier appointment to the clinic. In addition, patients were encouraged to use the platform to ask questions and receive immediate answers regarding any aspect of GDM management. As per the study protocol, medical treatment could only be initiated in a formal clinic appointment and not via the application. As a rule of thumb, it is the policy of our clinic to initiate medical therapy when BG levels were >95 mg/dL (fasting) or >140 mg/dL (1-hour postprandial) in >30% of the measurements. The decision is individualized by the clinic team (maternal-fetal medicine specialist and endocrinologist) for each patient. In general, we prescribe long-acting insulin (insulin detemir), and if needed shortacting insulin (insulin aspart). None of the patients in the current study received oral antiglycemic medications. Physicians in our clinic, providing care to the patients on their regular appointments, were not blinded to the group allocation. However, all staff in our labor and delivery ward and the neonatology division were blinded to group allocation. Data collection Upon recruitment, the following demographic data were collected: maternal age, parity, obstetric history, family history of diabetes mellitus, chronic hypertension,25 thrombophilia, smoking status, previous GDM, assisted reproductive technology, fasting glucose obtained at first trimester, values of glucose challenge test and OGTT, first-trimester fasting glucose, hemoglobin A1C upon diagnosis, educational status, and level of physical activity. Each patient’s height, weight, and body mass index were recorded. Obstetrical data collected included gestational age at delivery, mode of onset of labor, the presence of preeclampsia or gestational hypertension,25 polyhydramnios (amniotic fluid index >95th percentile for gestational age),26 antenatal corticosteroids administration,27 mode of delivery, shoulder dystocia, the use of episiotomy, or third-/fourthdegree perineal tears. OBSTETRICS Original Research FIGURE Study flow diagram Study design Miremberg. Smartphone-based daily feedback, GDM, and compliance. Am J Obstet Gynecol 2018. Immediately after birth, a pediatrician examined all neonates. Birthweight percentiles for gestational age were assigned using the updated local growth charts.28 Large for gestational age (LGA) was defined as an actual birthweight 90th percentile for gestational age. We collected data regarding birthweight, birthweight percentile, rate of LGA, neonatal length of stay, neonatal intensive care unit admission, hypoglycemia of the newborn (BG <40 mg/dL), respiratory morbidity (respiratory distress syndrome, transient tachypnea of the newborn, mechanical ventilation, or need for respiratory support), phototherapy, and neonatal death. Women in the smartphone group were approached during the last prenatal visit, and were asked to complete a short questionnaire (in Hebrew) regarding satisfaction with their prenatal care, the use of the application, and difficulties with application use. Secondary outcomes included: (1) diabetes-control parameters: mean BG (mean SD of all measured values), need for insulin treatment, and percentage of off-target measurements (thresholds: fasting >95 mg/dL and 1-hour postprandial >140 mg/dL); (2) pregnancy outcomes: polyhydramnios, preeclampsia, gestational hypertension, need for induction of labor, instrumental or cesarean delivery, shoulder dystocia, third- or fourth-degree perineal tears; and (3) neonatal outcomes: neonatal weight, LGA, neonatal intensive care unit admission, hypoglycemia of the newborn, respiratory morbidity, phototherapy, neonatal death, and composite adverse neonatal outcome. Composite adverse neonatal outcome was defined as the presence of 1 of the following early neonatal complications: hypoglycemia of the newborn, respiratory morbidity, phototherapy, or neonatal death. Outcomes Sample size calculation The primary outcome was patient compliance, expressed as percentage, and defined as the actual BG measurements/instructed measurements 100. The measurements were recorded from each patient BG diary in the control group, and from our research application-based data system in the smartphone group. A total of 120 participants, 60 participants per group, were needed to be recruited to detect a 20% difference in compliance (from a baseline of 70-90%) between the smartphone and control group, with a ¼ 0.05 and b ¼ 0.20. This calculation was based on preliminary retrospective data from our clinic (from the 6 months prior to the study) that the APRIL 2018 American Journal of Obstetrics & Gynecology 453.e3 Original Research ajog.org OBSTETRICS TABLE 1 Maternal characteristics of study groups Smartphone group n ¼ 60 Control group n ¼ 60 Maternal age, y 31.7 4.2 32 6.3 Nulliparity 29 (48.3) 19 (31.6) BMI, kg/m2 27.1 5.1 27.1 5.2 Chronic hypertension 5 (8.3) 1 (1.7) Thrombophilia 1 (1.7) 0 Smoking 3 (5) 7 (11.7) P value .973 .093 >.99 .207 >.99 .322 ART 3 (5) 7 (11.7) .322 Previous CD 9 (15) 13 (21.7) .479 Previous GDM 12 (20) 18 (30) .291 Family history of DM 30 (50) 20 (33.3) .095 First-trimester fasting glucose, mg/dL 88.8 6.8 87.6 8.5 .913 173.1 23 169.4 28.8 .919 OGTTefasting value, mg/dL 90.7 9.2 94.3 12.1 .813 OGTTe60-min value, mg/dL 202.3 23.3 197.5 22.9 .883 OGTTe120-min value, mg/dL 168.3 34.8 163.6 33.2 .922 OGTTe180-min value, mg/dL 110.4 38.4 107.5 33.5 .954 1 Abnormal OGTT value 6 (10.0) 8 (13.3) Hemoglobin A1C (%) at randomization 5.2 0.33 5.2 0.4 GCT value, mg/dL .777 >.99 Primary language Hebrew 59 (98.3) 59 (98.3) >.99 College/university degree 21 (38.2) 18 (37.5) >.99 Education, y 13.6 1.8 13.6 2 >.99 Physical exercise 5 (8.3) 7 (11.7) .762 Data are n (%) or mean SD unless otherwise specified. ART, assisted reproductive technology; BMI, body mass index; CD, cesarean delivery; DM, diabetes mellitus; GCT, glucose challenge test; GDM, gestational diabetes mellitus; OGTT, oral glucose tolerance test. Miremberg. Smartphone-based daily feedback, GDM, and compliance. Am J Obstet Gynecol 2018. baseline expected compliance in the control group is 70%. Statistical analysis Categorical variables were compared between the groups using c2 test or Fisher exact test and continuous variables were compared between groups using Student t test. P < .05 was considered statistically significant. Data were analyzed by statistical analysis software (SPSS, v23.0; IBM Corp, Armonk, NY). Results A total of 126 patients were randomized; 65 were assigned to the control group (of which 5 were lost to follow-up) and 61 were assigned to the intervention group (of which 1 patient was lost to followup). The final analysis included 120 participants, 60 in each group (Figure). The 6 patients lost to follow-up were allocated (due to patient convenience reasons) to a different clinic after randomization, and therefore were not included in the analysis. Maternal demographic characteristics are shown in Table 1. There were no significant differences between the groups. Six of the patients in the smartphone group and 8 of the patients in the control group were included based on 1 pathological OGTT value. The glycemic control characteristics are shown in Table 2. The primary outcome, which was prespecified as 453.e4 American Journal of Obstetrics & Gynecology APRIL 2018 patient compliance, was higher in the smartphone group as compared to the control group (84 0.16% vs 66 0.28%, P < .001). Mean BG was significantly lower in the smartphone group as compared to the control group (105.1 8.6 mg/dL vs 112.6 7.4 mg/dL, P < .001). The overall rate of insulin treatment was lower in the smartphone group compared to the control group (13.3% vs 30.0%, P ¼.044), as well as the rates of off-target measurements both fasting (4.7 0.4% vs 8.4 0.6%, P < .001) and 1-hour postprandial (7.7 0.8% vs 14.3 0.8%, P < .001). Pregnancy and delivery characteristics are summarized in Table 3. There were no differences between the groups in any of the measured characteristics. Table 4 presents the neonatal outcome parameters of the 2 groups. We found no differences between the groups in any of the outcomes. All 60 patients in the smartphone group reported “high” or “very high” satisfaction with their application-based prenatal care, and 80% of the patients reported no difficulty using the application (20% of the patients reported slight difficulty mainly related to Englishlanguage barrier). Comment In the current study, GDM patients randomized to use smartphone as part of their GDM management demonstrated a higher level of compliance to BG monitoring, lower mean BG values, and a lower rate of off-target measurements, both fasting and 1-hour postprandial. In addition, patients in the smartphone group also demonstrated a lower rate of the need for insulin treatment. Patients in the smartphone group reported a high level of satisfaction from their care, and thought that the use of this intervention was convenient and acceptable. It is well established in the literature that the treatment of GDM by a multidisciplinary approach combining diet modifications and medical treatment improves pregnancy outcome.10 Pregnancy outcome is closely associated with each patient’s glycemic control.29,30 Currently, the main principle of decision-making in managing GDM ajog.org OBSTETRICS TABLE 2 Glycemic control characteristics of study groups Smartphone group n ¼ 60 Control group n ¼ 60 P value 84 0.16 66 0.28 <.001b 105.1 8.6 112.6 7.4 <.001b Off-target 1-h postprandial glucose measurement, % 7.7 0.8 14.3 0.8 <.001b Off-target fasting glucose measurement, % 4.7 0.4 8.4 0.6 <.001b Insulin treatment 8 (13.3) a Compliance, % Mean blood glucose, mg/dL 18 (30) .044b Data are n (%) or mean SD unless otherwise specified. a Actual blood glucose measurements/instructed measurements 100; b Statistically significant. Miremberg. Smartphone-based daily feedback, GDM, and compliance. Am J Obstet Gynecol 2018. patient is each patient’s reported glycemic control, which depends on the patient’s compliance with selfperformed capillary BG monitoring. Current estimations report that >80% of the population in developed countries (up to 95% in some countries) own a cellular phone, most of which are smartphones with Internet availability. These numbers are probably higher in the reproductive-aged population. In recent years attempts are made to translate this smartphone revolution to improve medical care in all fields of medicine,31,32 and specifically in the diabetic population.16 GDM patients could potentially benefit from advanced technology platforms to improve their compliance and thereafter pregnancy outcome. Ming et al,19 in a systemic review and meta-analysis, concluded that there is insufficient evidence that smartphone technology is superior to standard care TABLE 3 Pregnancy and delivery characteristics of study groups Smartphone group n ¼ 60 Control group n ¼ 60 P value Antenatal corticosteroids 7 (11.7) 3 (5) .322 Gestational hypertension 0 1 (1.7) >.99 Preeclampsia 3 (5) 2 (3.3) >.99 Polyhydramnios 0 4 (6.7) .118 Gestational age at delivery, wk 38.2 1.7 38.5 1.4 .892 Induction of labor 24 (40) 17 (28.8) .248 Normal vaginal delivery 48 (80) 40 (67.7) .147 Instrumental delivery 4 (6.7) 1 (1.7) .364 Episiotomy 9 (15) 6 (10.2) .582 Third-/fourth-degree perineal tear 0 0 >.99 Shoulder dystocia 0 0 >.99 Cesarean delivery Emergent cesarean delivery 12 (20) 20 (33.3) .147 4 (6.7) 7 (11.6) .528 Data are n (%) or mean SD unless otherwise specified. Antenatal corticosteroid treatment administrated between 24-34 wk of gestation. Miremberg. Smartphone-based daily feedback, GDM, and compliance. Am J Obstet Gynecol 2018. Original Research for women with GDM. However, the 7 trials included in the meta-analysis were all small and underpowered. Despite proven feasibility,18,33,34 currently, the literature lacks randomized controlled trials comparing a smartphone-based daily communication platform between GDM patients and their caretakers to standard care. In addition, none of the previously published studies attempted to investigate such an effect on detailed pregnancy outcomes. This current study demonstrated that smartphone-based technology could indeed improve not only the adherence to self-performed BG monitoring but also glycemic control parameters such as mean BG, off-target measurements, and the need for insulin treatment. Advanced technology provided us the platform to perform this study and maintain a daily communication and feedback system with our patients. We attribute our encouraging results to the individualized approach of our study. We were able to quickly respond, address patient concerns, reassure, warn, or modify individual patient’s treatment plan on a daily basis, compared to our biweekly standard protocol. Our study has several strengths. First, it was the first randomized controlled trial to compare GDM patient compliance, glycemic control, and pregnancy outcome between a smartphone-based daily communication platform and standard care. Second, the current study was adequately powered to detect differences in the primary outcome. Third, it was performed in a single-center multidisciplinary diabetes-in-pregnancy clinic, similar to those that exist in most academic centerseemphasizing the generalizability of the results. The current study is not without limitations. First, despite being powered to address the primary outcome, it was underpowered to address the secondary outcomes, which are of major clinical significance. We did observe some promising trends such as lower birthweights, a lower rate of cesarean delivery, and a lower rate of composite adverse neonatal outcome in the smartphone group; however, the study was underpowered for these differences to reach statistical APRIL 2018 American Journal of Obstetrics & Gynecology 453.e5 Original Research ajog.org OBSTETRICS TABLE 4 Neonatal outcomes in study groups Birthweight, g Birthweight percentile Smartphone group n ¼ 60 Control group n ¼ 60 3097.8 548.2 3203.3 414.6 54.1 27.9 57.3 25.7 P value .878 .933 >.99 LGA 7 (11.6) 7 (11.6) Neonatal hospitalization, d 3.9 2 3.8 1.2 NICU admission 6 (10) 7 (11.6) >.99 2 (3.3) 1 (1.7) >.99 Hypoglycemia of newborn Respiratory morbidity a Phototherapy Neonatal death Composite adverse outcome b .966 4 (6.6) 2 (3.3) .680 2 (3.3) 4 (6.6) .680 0 0 7 (11.7) 11 (18.3) >.99 .444 Data are n (%) or mean SD unless otherwise specified. LGA, large for gestational age; NICU, neonatal intensive care unit. a Includes respiratory distress syndrome, transient tachypnea of newborn, mechanical ventilation, or need for respiratory support; b Defined as presence of 1 of following: hypoglycemia of newborn, respiratory morbidity, phototherapy, or neonatal death. Miremberg. Smartphone-based daily feedback, GDM, and compliance. Am J Obstet Gynecol 2018. significance. Second, the nature of the study did not allow blinding the physician meeting the patient in the clinic routine visits to the group allocation. Third, our study included only patients who own a smartphone, speak English, and are compliant to seek medical care in a tertiary center multidisciplinary diabetes-inpregnancy clinic. These inclusion criteria probably underrepresent a high-risk low socioeconomic population that does not meet these criteria. In conclusion, we believe that the current study sheds new light on an important concept: advanced smartphone-based technology can be used for daily patientphysician communication and feedback and subsequently potentially improve the medical outcome. Indeed, GDM patients in this study demonstrated better compliance, improved glycemic control parameters, required less insulin treatment, and reported a very high satisfaction rate with the process. Our future research will focus on performing larger randomized controlled trials powered to study the effect of this platform on specific pregnancy outcomes. Indeed, we plan to begin soon recruitment of patients to a second study in which the primary outcome will be delivery of neonates LGA. We will recruit 378 women (189 in each group) to identify a 50% decrease in LGA over a period of 2 years. We will publish our results as they are available. n Acknowledgment The authors wish to thank the entire staff of the multidisciplinary diabetes-in-pregnancy clinic at the Edith Wolfson Medical Center, Holon, Israel, headed by Essaev Stella, RN (nursing team leader), for their dedicated contribution that made this study possible. References 1. DeSisto CL, Kim SY, Sharma AJ. Prevalence estimates of gestational diabetes mellitus in the United States, pregnancy risk assessment monitoring system (PRAMS), 2007-2010. Prev Chronic Dis 2014;11:E104. 2. Wier LM, Witt E, Burgess J, et al. Hospitalizations related to diabetes in pregnancy, 2008. HCUP statistical brief 102. Rockville (MD). Available at: http://www.hcupus.ahrq.gov/reports/ statbriefs/sb102.pdf. Accessed May 23, 2016. 3. Bouthoorn SH, Silva LM, Murray SE, et al. Low-educated women have an increased risk of gestational diabetes mellitus: the Generation R study. Acta Diabetol 2015;52:445-52. 4. Myers CA, Slack T, Martin CK, et al. 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A web-based clinical decision support system for gestational diabetes: automatic diet prescription and detection of insulin needs. Int J Med Inform 2017;102:35-49. Author and article information From the Departments of Obstetrics and Gynecology (all authors) and Pediatric Endocrinology and Diabetes Unit (Dr Ben-Ari), Edith Wolfson Medical Center, Holon, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv (all authors), Israel. Received Nov. 12, 2017; revised Jan. 30, 2018; accepted Jan. 31, 2018. The authors report no conflict of interest. Presented in oral format at the 38th annual meeting of the Society for Maternal-Fetal Medicine, Dallas, TX, Jan. 29-Feb. 3, 2018. Corresponding author: Hadas Miremberg, MD. dasile2@gmail.com APRIL 2018 American Journal of Obstetrics & Gynecology 453.e7