Table 3.

Multivariate linear regression—intention-to-treat analysis. Each line starting with a dependent variable contains information from one regression analysis (N=571) and provides model fit (R ²), results for the variable group (regardless of significance), and those variables which were demonstrated to be significant independent predictors in the model.

Dependent variable		R 2	Group		Further independent predictors
			B (95% CI)	β	Variable	B (95% CI)	β
Physical activity
	Frequency of doing exercise, Δ (t2–t1)	.42	0.01 (–0.40, 0.42)	.001	Indication	0.63 (0.12, 1.13)	.10
					Age	–0.40 (–0.65, –0.14)	–.11
					Baseline behavior	–0.70 (–0.78, –0.63)	–.63
	Improvements in physical activity frequency	.06	0.10 (–0.06, 0.26)	.05
					Age	–0.18 (–0.28, –0.09)	–.17
					Income	0.04 (0.01, 0.07)	.13
					Baseline behavior	–0.03 (–0.06, 0.00)	–.09
	Improvements in physical activity regularity	.06	0.18 (0.02, 0.34)	.09	Indication	0.21 (0.01, 0.42)	.11
					Age	–0.18 (–0.28, –0.08)	–.16
					Baseline behavior	–0.03 (–0.06, 0.00)	–.10
	Improvements in physical activity in daily routine	.06	0.11 (–0.05, 0.27)	.08	Age	–0.13 (–0.23, –0.03)	–.12
					Education	–0.28 (–0.46, –0.09)	–.13
Eating behavior
	Attention paid to a healthy diet, Δ (t2–t1)	.44	0.12 (–0.19, 0.42)	.02	Baseline behavior	–0.63 (–0.70, –0.57)	–.65
	Improvements in eating more healthy foods	.08	0.03 (–0.12, 0.18}	.02	BMI	0.04 (0.02, 0.05)	.20
	Improvements in eating less unhealthy foods	.09	0.08 (–0.08, 0.23)	.04	Indication	0.29 (0.09, 0.48)	.15
					BMI	0.03 (0.02, 0.05)	.18
	Improvements in eating smaller portions	.09	0.05 (–0.10, 0.20)	.03	BMI	0.05 (0.04, 0.07)	.29
	Improvements in using less fat for cooking	.07	0.16 (0.01, 0.31)	.09	Indication	0.20 (0.01, 0.39)	0.11
					Education	–0.22 (–0.40, –0.05)	–.11
					BMI	0.03 (0.02, 0.04)	.19