Table 4.

Multivariate analysis of the effect of having an event on daily step counts averaged over different time windows around the anchor date.

	Pedometer plus website				Pedometer alone
Outcome	N a	Effect on daily step countb	95% CI	p Value	N a	Effect on daily step countb	95% CI	p Value
15 days around datec	47	−983	−1898 to −67	0.04	42	−351	−1490 to 789	0.54
31 days around datec	46	−973	−1794 to −153	0.02	41	−468	−1683 to 747	0.44
61 days around datec	44	−882	−1697 to −67	0.03	39	−495	−1692 to 702	0.41

BDI-II: Beck Depression Inventory-II; CI: confidence interval.

^a Events were included if step-count data were available for more than half the days before and for more than half the days after the anchor date. Ns vary because not every event met this criterion.

^b Effects on daily step count are the model coefficients as determined by generalized linear regression models, adjusted for baseline daily step count and BDI-II depression score. Event/no event is the independent variable (reference group = no event). Daily step count averaged 15, 31, or 61 days around the anchor date is the dependent variable.

^c Anchor date of medical event or month-2 telephone call.