The association between daily total physical activity and risk of cardiovascular disease among hypertensive patients: a 10-year prospective cohort study in China

Table 2 Hazard ratios (95% CI) of CVD across quartiles of total physical activity for all participants and stratified by gender in this study

Physical activity	No. of Observations	No. of Cases	Person years of follow-up	Incidence density (1/1000 person-years)	Model 1 Hazard ratio (95%CI)	P value	Model 2 Hazard ratio (95%CI)	P value
All	20,179	2419	211,066	11.46
Q1	4919	943	50,392	18.71	1.00		1.00
Q2	5166	651	54,255	12.00	0.86 (0.78–0.96)	0.005*	0.87 (0.79–0.97)	0.009*
Q3	5046	439	53,535	8.20	0.72 (0.64–0.81)	< 0.001*	0.73 (0.65–0.83)	< 0.001*
Q4	5048	386	52,884	7.30	0.72 (0.63–0.82)	< 0.001*	0.75 (0.65–0.85)	< 0.001*
Male	8941	1135	91,136	12.45
Q1	2106	452	20,758	21.77	1.00		1.00
Q2	1733	218	17,780	12.26	0.82 (0.69–0.96)	0.016*	0.82 (0.69–0.97)	0.017*
Q3	2145	200	22,133	9.04	0.70 (0.59–0.84)	< 0.001*	0.70 (0.58–0.83)	< 0.001*
Q4	2957	265	30,465	8.70	0.72 (0.61–0.85)	< 0.001*	0.73 (0.61–0.87)	< 0.001*
Female	11,238	1284	119,930	10.71
Q1	2813	491	29,634	16.57	1.00		1.00
Q2	3433	433	36,475	11.87	0.89 (0.78–1.02)	0.086	0.91 (0.80–1.04)	0.153
Q3	2901	239	31,402	7.61	0.73 (0.63–0.86)	< 0.001*	0.76 (0.65–0.90)	0.001*
Q4	2091	121	22,419	5.40	0.70 (0.57–0.86)	< 0.001*	0.75 (0.60–0.93)	0.008*

Model 1 was adjusted for age and gender
Model 2 was additionally adjusted for smoking status, alcohol consumption, intake frequencies of red meat, intake frequencies of fresh fruit, prevalent diabetes at baseline, leisure-sedentary time and BP-levels
* P < 0.05

ISSN: 1471-2458