Table 4.

Risk Ratios for Select Variables at 4, 8, and 12 Weeks to Test the Effects of these Variables on Exercise Non-Adherence over Time

Risk Factors	4-Weeks			8-Weeks			12-Weeks
	RR	95% CI	P-value	RR	95% CI	P-value	RR	95% CI	P-value
Age, per 5 years ↓	1.01	0.94–1.08	0.82	1.05	0.95–1.15	0.32	1.08	0.98–1.19	0.10
Annual income (versus≥$100,000)			0.52			0.34			0.016
≤$29,000	1.31	0.88–1.96	0.19	1.25	0.76–2.07	0.37	1.64	1.10–2.43	0.015
$30,000–$99,999	0.96	0.75–1.23	0.74	0.88	0.64–1.21	0.43	0.82	0.59–1.14	0.24
Missing	1.09	0.75–1.58	0.66	1.26	0.81–1.95	0.31	1.33	0.88–2.02	0.18
No pain with pivoting/twisting	1.03	0.70–1.52	0.86	1.25	0.81–1.93	0.32	1.60	1.14–2.25	0.006
C-statistic	0.72			0.66			0.66