Table A1.

Associations between PA and the risk of PA (excluding participants with disability).

Variables	Model 4 (n = 5748)
	OR	95% CI
Frequency
VPA
No activity	1.00
1–2 d/w	1.30	0.65	2.63
3–5 d/w	0.29 *	0.10	0.80
6–7 d/w	0.80	0.49	1.31
MPA
No activity	1.00
1–2 d/w	0.35 *	0.15	0.82
3–5 d/w	0.26 *	0.12	0.57
6–7 d/w	0.43 *	0.27	0.66
LPA
No activity	1.00
1–2 d/w	0.92	0.33	2.55
3–5 d/w	1.00	0.52	1.92
6–7 d/w	0.94	0.59	1.49
Duration
VPA
No activity	1.00
10–29 min/d	0.88	0.21	3.81
30–119 min/d	0.57	0.20	1.57
120–239 min/d	1.03	0.54	1.94
≥240 min/d	0.66	0.39	1.11
MPA
No activity	1.00
10–29 min/d	0.41 *	0.19	0.88
30–119 min/d	0.31 *	0.17	0.55
120–239 min/d	0.42 *	0.23	0.76
≥240 min/d	0.47 *	0.26	0.85
LPA
No activity	1.00
10–29 min/d	0.78	0.42	1.44
30–119 min/d	1.07	0.63	1.80
120–239 min/d	0.87	0.49	1.54
≥240 min/d	0.78	0.41	1.48
Volume
VPA
No activity	1.00
10–74 min/w	2.00	0.45	8.87
75–299 min/w	0.57	0.15	2.26
≥300 min/w	0.74	0.47	1.18
MPA
No activity	1.00
10–149 min/w	0.38 *	0.18	0.80
150–299 min/w	0.20 *	0.05	0.88
≥300 min/w	0.40 *	0.26	0.62
LPA
No activity	1.00
10–149 min/w	0.78	0.42	1.43
150–299 min/w	0.74	0.20	2.79
≥300 min/w	0.98	0.62	1.55

Abbreviations: OR, odds ratio; CI, confidence interval; PA, physical activity; VPA, vigorous physical activity; MPA, moderate physical activity; LPA, light physical activity. OR was adjusted for age, sex, educational status, marital status, drinking, smoking, BMI and case weights. *: p < 0.05.