Table 1.

Baseline demographic and biometric characteristics of the full study sample and key subsamples

		Subsamples: by weigh-in window				Subsamples: by lesson completion
	Enrolled (n=220)	16 weeks (n=147)	1 year (n=161)	2 years (n=145)	3 years (n=102)	4+ (n=187)	9+ (n=155)
	M±SD	M±SD	M±SD	M±SD	M±SD	M±SD	M±SD
Age	43.6±12.4	46.0±12.8	44.8±12.2	44.9±12.3	46.4±12.6	43.9±12.4	44.9±12.8
Weight	223.1±47.9	218.7±46.3	221.0±48.4	219.4±47.4	217.9±47.2	222.5±47.0	221.0±47.2
BMI	36.6±7.5	35.8±7.1	36.3±7.8	36.1±7.5	35.9±7.2	36.7±7.6	36.4±7.6
A1c	5.97 ±. 91	6.01 ±. 97	6.01 ±. 97	6.02 ±. 96	6.04±1.02	5.97 ±. 92	5.98 ±. 96
	%	%	%	%	%	%	%
Sex, female	82.7	81.6	82.0	82.1	84.3	85.0	83.9
Ethnicity
White	49.1	53.1	47.8	48.3	49.0	49.7	50.3
Black	28.6	23.1	29.2	27.6	28.4	28.3	27.1
Hispanic	10.5	12.3	11.2	11.7	10.8	11.3	11.6
Other	9.5	9.5	9.9	10.3	9.8	8.0	8.4
Not disclosed	2.3	2.0	1.9	2.1	2.0	2.7	2.6
Education
≥College degree	35.0	39.5	40.4	37.3	39.2	39.0	41.3
<College degree	33.6	29.9	31.1	31.0	29.4	32.1	30.3
Not disclosed	31.4	30.6	28.5	31.7	31.4	28.9	28.4
Annual income
≥$50 000	33.6	36.1	34.2	33.1	34.3	34.8	36.1
<$50 000	31.4	29.3	32.9	32.4	30.4	32.6	32.3
Not disclosed	35.0	34.6	32.9	34.5	35.3	32.6	31.6

BMI, body mass index.