. 2015 Jul;105(7):1439–1445. doi: 10.2105/AJPH.2014.302540

TABLE 2—

Relationship of Baseline Average Daily Sedentary Hours to Physical Frailty Onset Over 2 Years of Follow-Up: Osteoarthritis Initiative, United States, 2008–2012

Model Type	HR^a (95% CI)	P
Unadjusted	1.27 (1.05, 1.53)	.014
Adjusted for moderate activity, baseline functioning, and monitoring time	1.35 (1.05, 1.73)	.021
Adjusted for moderate activity, baseline functioning, monitoring time, sociodemographic characteristics, and health factors	1.36 (1.02, 1.79)	.033

Note. CI = confidence interval; HR = hazard ratio. Sedentary time analyses controlled for monitoring time as a design variable.

^{^a}

For physical frailty onset (per 1-hour increase in sedentary time).