Which behaviour change techniques are effective to promote physical activity and reduce sedentary behaviour in adults: a factorial randomized trial of an e- and m-health intervention

Table 6 The interaction effects between time and each of the three BCTs on SB. Means and 95% confidence intervals are displayed

SB (hours/day)		Groups who did not receive the technique	Groups who received the technique	t-value (df)	p-value	Effect size
Action planning	Pre-test	11.80 [11.01; 12.60]	12.32 [11.50; 13.14]	−0.952 (103.94)	0.343	−0.64 [−1.95; 0.67]
Action planning	Post-test	10.30 [9.25; 11.36]	10.17 [9.01; 11.35]	−0.952 (103.94)	0.343	−0.64 [−1.95; 0.67]
Coping planning	Pre-test	11.95 [11.10; 12.81]	12.21 [11.55; 12.98]	−0.084 (104.05)	0.933	−0.06 [−1.37; 1.26]
Coping planning	Post-test	10.14 [8.93; 11.35]	10.33 [9.29; 11.37]	−0.084 (104.05)	0.933	−0.06 [−1.37; 1.26]
Self-monitoring	Pre-test	11.93 [11.15; 12.70]	12.25 [11.40; 13.09]	−2.573 (100.66)	0.012 ^a	−1.66 [−2.93; −0.40]
Self-monitoring	Post-test	10.80 [9.67; 11.94]	9.70 [8.62; 10.79]	−2.573 (100.66)	0.012 ^a	−1.66 [−2.93; −0.40]

^a p < 0.05 = significant differences in SB from pre- to post-test between groups who did not receive the technique and groups who received the technique. Ninety five percent confidence intervals are shown in square brackets. Df = degrees of freedom. Effect size = absolute effect size in hours/day

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