Table 3. Relative risk (RR) and 95% confidence interval (CI) of all-cause mortality by time spent walking for men and women.^†.

Variable	Time Spent Walking (hour per day)			P for trend
	≥1	1.0 - 0.5	≤0.5
Men
Person-years	94,600	48,307	62,774
No. of death	598	288	369
Age-adjusted RR	1.00	1.03 (0.90 - 1.19)	1.14 (1.00 - 1.30)	0.061
Multivariate RR1	1.00	1.00 (0.87 - 1.15)	1.10 (0.96 - 1.25)	0.205
Multivariate RR2	1.00	0.98 (0.84-1.14)	1.08 (0.94 - 1.25)	0.318
Women
Person-years	101,479	54,472	64,673
No. of death	260	167	197
Age-adjusted RR	1.00	1.23 (1.01 - 1.49)	1.40 (1.16 - 1.68)	<0.001
Multivariate RR1	1.00	1.21 (0.99 - 1.47)	1.34 (1.11 - 1.62)	0.002
Multivariate RR2	1.00	1.24 (1.00 - 1.54)	1.38 (1.12 - 1.70)	<0.001

†: Adjusted for age in years; education (up to 15 years of age, 16-18, or 19 years or older); marital status at baseline (whether or not living with spouse); past histories of hypertension, renal diseases, liver diseases, diabetes mellitus, peptic ulcers, or tuberculosis; cigarette smoking (never smokers, past smokers, current smokers smoking 1-19 cigarettes per day, or current smokers smoking at least 20 cigarettes per day); alcohol drinking (never drinkers, past drinkers, or current drinkers); body mass index in kg/m² (less than 18.5, 18.5-24.9, or 25.0 or higher); consumption frequencies of green vegetables and oranges (almost daily, 3-4 times per week, 1-2 times per week, or 1-2 times per month or less often). RR2 has been estimated with the exclusion of subjects who died within the first 3 years of follow-up. Numbers in parentheses are 95% confidence intervals.