. Author manuscript; available in PMC: 2016 Feb 12.

Published in final edited form as: J Am Geriatr Soc. 2015 Jul 1;63(7):1391–1400. doi: 10.1111/jgs.13520

Table 4.

Regression Model for Physical Activity and Sleep (N = 115)

Characteristic	Model 1	Model 2
Characteristic	Daytime Physical Activity, Mean Average Activity Counts/Min Beta (95% Confidence Interval)
Sleep night before, hours	−2.68 (−5.27 to −0.11)	−3.04 (−5.65 to −0.43)^a
Charlson index tertile 3		−55.7 (−88.2 to −23.3)^a
Charlson index tertile 2		−33.3 (−59.8 to −6.80)^a
Physical therapy		−29.8 (−55.9 to −3.73)^a
Centered age (per year)		−1.24 (−2.40 to −0.07)^a
Male		−18.1 (−41.8−5.60)
African American		−23.6 (−49.3−2.17)
Baseline limitation		20.6 (−5.70−46.9)
Length-of-stay tertile 2		−11.7 (−43.3−19.8)
Length-of-stay tertile 3		−17.5 (−48.0−12.9)

Random effects linear regression analyses were performed to assess the relationship between average activity counts per minute and sleep duration, with and without Charlson Comorbidity Index tertiles, length-of-stay tertiles, physical therapy, baseline physical limitation due to physical health, and demographic characteristics as covariates.

P < .05.