. Author manuscript; available in PMC: 2015 Jul 1.

Published in final edited form as: Am J Geriatr Psychiatry. 2013 Mar 25;22(7):718–726. doi: 10.1016/j.jagp.2012.12.023

Table 3. Dyssomnia and Incident Disability.

Terms	IADL	ADL	Mobility
1. Core model	1.20 (1.04-1.39, x²₁=7.62) ^*	1.27 (1.10-1.47, x²₁=12.15) ^**	1.27 (1.09-1.48, x²₁=11.04) ^**
2. Core + body mass index	1.21 (1.05-1.40, x²₁=8.20) ^*	1.28 (1.10-1.48, x²₁=12.41) ^*	1.27 (1.08-1.48, x²₁=11.03) ^**
3. Core + chronic medical conditions	1.17 (1.02-1.36, x²₁=5.90) ^*	1.24 (1.07-1.44, x²₁=9.94) ^*	1.25 (1.07-1.46, x²₁=9.76) ^***
4. Core + hypnotic medications	1.19 (1.03-1.38, x²₁=6.84) ^*	1.26 (1.09-1.46, x²₁=11.16) ^**	1.26 (1.08-1.47, x²₁=10.44) ^**
5. Core + psychoactive medications	1.21 (1.05-1.40, x²₁=8.42) ^**	1.29 (1.12-1.50, x²₁=14.49) ^***	1.26 (1.09-1.48, x²₁=11.13) ^**
6. Core + antidepressant medications	1.17 (1.01-1.35, x²₁=5.68) ^*	1.18 (1.02-1.37, x²₁=6.14) ^*	1.23 (1.05-1.43, x²₁=7.90) ^**
7. Core + depressive symptoms	1.10 (0.94-1.29, x²₁=2.12)	1.11 (0.95-1.30, x²₁=2.23)	1.23 (1.03-1.41, x²₁=6.58) ^*

Core model includes terms for dyssomnia, age, sex, and education. Models 2-7 included the terms from the core model as well as the covariate listed. Values are the hazard ratio (95% confidence interval) for the dyssomnia term in a Cox proportional hazards model for incident disability.

IADL: instrumental activity of daily living; ADL: activity of daily living.

p<0.05

^**

p<0.01

^***

p<0.001