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)

 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)

 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

 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

 < 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

 Never married

47.6

47.9

53.4

 Married

19.4

13.1

11.8

 Other

33.0

39.0

34.8

Previous cardiovascular disease^a (% Yes)

8.7

12.4

9.0

Previous mental health condition^a (% 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