Table 1.

Attendance and weight loss by dyad status in the NDPP

	Participants (N = 2,946)
	Enrolled in dyad (n = 90)	Enrolled alone (n = 2,856)	P value
Any attendance	66 (73.3)	1,272 (44.5)	<0.001
Percentage of sessions attended*	43.0 ± 3.8	36.3 ± 0.9	0.074
Days of attendance*	145.0 ± 15.1	110.0 ± 3.6	0.025
Program completion*†	22 (33.3)	250 (19.7)	0.022
Percent weight loss*	−1.4 ± 0.5	−1.8 ± 0.1	0.495
Achieved ≥5% weight loss*‡	13 (19.7)	191 (15.3)	0.462‡
Men	6 (31.6)	43 (16.0)	0.031
Women	7 (14.9)	148 (15.5)	0.200

Data are presented as mean ± SE based on modified population marginal means for continuous variables and frequency (percent) for categorical variables. Boldface type indicates statistical significance in adjusted models (P < 0.05). Models include sex, age, race/ethnicity, and attendance to presessions prior to enrollment. Weight loss models are further adjusted for attendance.

^*Data are presented for participants attending ≥1 session.

^†Program completion is defined as attending ≥3 sessions in months 1–6 and duration ≥9 months.

^‡Achieving ≥5% weight loss was significantly modified by sex (P = 0.016).