Table 2.

Sex-and BMI-defined weight category strata of mean ± SD steps/day

	T1 Steps/day	T2 Steps/day	Pearson's r	Spearman's r	Δ = T2 – T1 Steps/day (95% CI)
Normal weight = BMI < 25 kg/m2
Males (n = 167)	9,220 ± 3,808	9,066 ± 3,571	.691*	.669*	-157 ± 2,907 (-601, 287)
Females (n = 373)	8,870 ± 3,189	8,739 ± 3,178	.597*	.564*	131 ± 2,859 (-422, 160)
Overweight ≥ BMI = 25 kg/m2 to < 30 kg/m2
Males (n = 243)	8,944 ± 3,611	8,481 ± 3,542	.573*	.511*	-463 ± 3,306 (-880, -45)
Females (n = 205)	8,679 ± 3392	8,704 ± 3,308	.524*	.539*	25 ± 3,270 (-425, 475)
Obese = BMI > 30 kg/m2
Males (n = 81)	7,318 ± 2,957	7,555 ± 2,961	.525*	.511*	238 ± 2,886 (-400, 876)
Females (n = 106)	7,564 ± 2,926	8,193 ± 3,284	.425*	.467*	629 ± 3,344 (-15, 1274)

*correlation is significant at the 0.01 level (2-tailed)