Table 3. Hazard ratios (HRs) plus 95% confidence intervals (CIs) for death from cardiovascular disease, according to physical activity.

	Model 1		Model 2
	HR	95% CI	HR	95% CI
Men
Q1 (≤28.8)	1.00		1.00
Q2 (28.9–34.1)	0.62	(0.40–0.98)	0.66	(0.41–1.06)
Q3 (34.2–38.3)	0.53	(0.31–0.88)	0.65	(0.37–1.14)
Q4 (≥38.4)	0.40	(0.22–0.73)	0.48	(0.24–0.93)
P for trend	P < 0.01		P = 0.03
Women
Q1 (≤28.0)	1.00		1.00
Q2 (28.1–30.2)	0.71	(0.38–1.32)	0.70	(0.36–1.35)
Q3 (30.3–33.8)	0.52	(0.26–1.04)	0.50	(0.24–1.06)
Q4 (≥33.9)	0.48	(0.22–1.05)	0.49	(0.21–1.15)
P for trend	P = 0.03		P = 0.05

Q1 is the lowest quartile of physical activity; Q4 is the highest.

Model 1 was adjusted for geographic area and age.

Model 2 was adjusted for geographic area, age, systolic blood pressure, body mass index, serum total cholesterol, smoking, drinking, education, job, and history of diabetes mellitus.

P for trend was calculated by treating category scales as continuous variables.