Improving diet, physical activity and other lifestyle behaviours using computer-tailored advice in general practice: a randomised controlled trial

Table 3 Effect of intervention on the Prudence Score at 3 months (n = 1599)

	Intervention	Control	T-test (p value) ^a	Repeated Measures ANOVA ^b	Repeated Measures ANOVA ^c
	Prudence Score (95% CI)	Prudence Score (95% CI)
Total
Baseline	5.88 (5.77-5.99)	5.84 (5.73-5.96)	t = 0.44 (p = 0.66)	F = 13.3 P = 0.01	F = 11.58 p < 0.001
3 months	6.25 (6.13-6.36)	5.96 (5.84-6.08)	t = 3.47 ( p = 0.001)	F = 13.3 P = 0.01	F = 11.58 p < 0.001
Net Change	0.37	0.12
Men
Baseline	5.60 (5.39-5.80)	5.45 (5.22-5.67)	t = 0.99 (p = 0.32)	F = 4.6 p = 0.03	F = 4.0 P = 0.04
3 months	5.92 (5.72-6.13)	5.55 (5.33-5.77)	t = 2.45 (p = 0.014)	F = 4.6 p = 0.03	F = 4.0 P = 0.04
Net Change	0.32	0.10
Women
Baseline	6.01 (5.88-6.14)	6.01(5.88-6.16)	t = 0.04 (p = 0.96)	F = 8.6 p = 0.003	F = 7.6 P = 0.006
3 months	6.40 (6.26-6.54)	6.13(5.99-6.27)	t = 2.72 (p = 0.006)	F = 8.6 p = 0.003	F = 7.6 P = 0.006
Net Change	0.39	0.12

a T-test is used to assess the difference between intervention and control group at baseline or 3 months in the P-Score.
b ANOVA adjusted for gender and age.
c ANOVA adjusted for gender and age with intention-to-treat analysis.

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