Table 2.

Effects of treatment on moderate-to-vigorous physical activity in community sample at 12 months and from 12 to 24 months (N=417)

	Estimate	(SE)	df	Lower CI	Upper CI	MI
Intercept	4.41 a	0.29	3458.17	3.84	4.98	0.07
Female	1.42 a	0.27	457.29	0.90	1.94	0.21
Age	−1.32 a	0.12	357.32	−1.56	−1.08	0.23
BMI	−0.38 a	0.13	160.63	−0.64	−0.13	0.35
Diastolic BP	0.04	0.11	1176.11	−0.17	0.26	0.13
Income	−0.02	0.13	207.29	−0.28	0.24	0.31
Education	−0.11	0.12	687.11	−0.34	0.12	0.17
Family SS	0.10	0.13	1392.40	−0.15	0.36	0.12
Friend SS	0.05	0.13	446.68	−0.21	0.31	0.21
Motivation for PA	0.36 b	0.13	306.32	0.11	0.62	0.25
Access to places	0.10	0.13	210.05	−0.15	0.35	0.31
Crime	0.04	0.11	1857.13	−0.18	0.26	0.10
Season	0.03	0.24	414.23	−0.44	0.49	0.22
Walking only	0.60	0.39	537.20	−0.17	1.37	0.19
Full intervention	0.62	0.39	1088.17	−0.14	1.39	0.13
Time	−0.19	0.47	58.64	−1.13	0.76	0.58
Time change	0.47	0.41	84.43	−0.35	1.29	0.49
Walk×time	−0.18	0.63	62.95	−1.45	1.08	0.56
Full×time	0.16	0.49	546.70	−0.80	1.13	0.19
Walk×time change	0.32	0.55	96.27	−0.76	1.41	0.46
Full×time change	−0.22	0.48	473.18	−1.16	0.71	0.20

Average daily minutes of MVPA is on the square root scale. Continuous covariates are centered. Walking and full intervention are dummy-coded variables, with 1 indicating the presence of each program, respectively. Time is a dummy-coded variable, with baseline coded 0 and all subsequent assessment periods coded 1. Time change is a variable representing change from12 to 24 months. (SE) is the standard error of the parameter estimate and df is the estimated df, both adjusted for the use of multiple imputation. CI is the 95 % confidence interval. MI is the fraction of missing information, a measure of differences in each parameter estimate between imputed datasets

BMI body mass index, BP blood pressure, PA physical activity, SS social support

^aDenotes p<001

^bDenotes p<01