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Table 1 Baseline characteristics of the We Can Prevent Diabetes study subjects attending at least one Diabetes Prevention Program session, by study arm (n = 847; IND Individual; GRP Group/Individual; AC Attention Control)

From: The effects of financial incentives on diabetes prevention program attendance and weight loss among low-income patients: the We Can Prevent Diabetes cluster-randomized controlled trial

Characteristics IND
(N = 33; n = 309)
GRP
(N = 30; n = 259)
AC
(N = 30; n = 279)
Glucose Entry Criteria (%)
 HbA1c 39–46 mmol/mol
(5.7–6.4%)
62.5 56.8 60.9
 Fasting plasma glucose 5.6–6.9 mmol/L (100–125 mg/dl) 26.2 26.9 29.0
 Impaired glucose tolerance: 7.8–11.0 mmol/L (140–199 mg/dL) 0.3 0 0.4
 Abnormal glucose diagnosis code (ICD-9790.2x) 8.7 8.5 7.5
 Self-report history of gestational diabetes 1.3 6.6 1.4
 None documented 0.3 1.9 0.7
Mean baseline HbA1c (mmol/mol; SD) 40 (2)
(5.8% (0.3))
40 (3)
(5.8% (0.4))
40 (2)
(5.8% (0.3))
Diabetes diagnosis code
(ICD-9250.xx)
9.7 10.8 7.2
Baseline weight 96.4 kg
(212.5 lb)
97.3 kg
(214.5 lb)
97.1 kg
(214.0 lb)
Mean baseline body mass index (kg/m2, SD) 35.6 (8.1) 37.6 (8.6) 36.6 (7.8)
Female (%) 70.9 72.6 70.2
Mean Age (years, SD) 48.6 (12.2) 47.4 (11.9) 48.9 (11.6)
Race/Ethnicity (%)
 White 15.5 25.1 10.8
 Black/African American 70.6 54.0 64.5
 Asian 3.9 2.3 6.4
 American Indian/Alaska Native 5.2 10.0 15.4
 Native Hawaiian/Pacific Islander 0 0 0
 Hispanic/Latino 4.2 6.2 1.4
 Other or missing 0.6 2.3 1.4
Primary Language (%)
 English 61.2 78.4 79.2
 Spanish 2.9 3.5 0.4
 Somali 31.7 15.4 14.3
 Hmong 3.6 0.8 4.7
 Other 0.6 1.9 1.4
Education Level (%)
 < High school 40.8 33.2 35.9
 High school 49.2 50.2 51.2
 More than high school 10.0 16.6 12.9
Marital Status (%)
 Never married 47.6 47.9 53.4
 Married 19.4 13.1 11.8
 Other 33.0 39.0 34.8
Previous cardiovascular diseasea (% Yes) 8.7 12.4 9.0
Previous mental health conditiona (% Yes) 37.9 40.9 41.2
YMCA lifestyle coach 79.3 86.5 81.7
Clinic-based lifestyle coach 20.7 13.5 18.3
  1. a. Based on Medicaid claims ICD-9-CM diagnostic and procedure codes.