Table 2.

Basic and Intermediate ADL limitations at MIDUS 2 regressed on MIDUS 1 sleep problems, functional limitations, and covariates (N = 3,620). Estimates were from Poisson regression models, and incident rate ratios (IRR) are shown for ease of interpretation.

	Basic ADLs		Intermediate ADLs
Variable	IRR	[95% CI]	IRR	[95% CI]
Age	1.03***	[1.02,1.04]	1.02***	[1.02,1.03]
Sex (female=1)	1.30***	[1.08,1.56]	1.29***	[0.07,0.15]
Race (non-White=1)	0.88	[0.64,1.21]	0.85**	[0.76,0.94]
Educational attainment
High school or GED	1.90***	[1.50,2.41]	1.30***	[1.22,1.39]
Some college	1.42**	[1.10,1.85]	1.10*	[1.02,1.18]
College or more	REF.		REF.
ADLs at wave 1	1.88***	[1.62,2.19]	1.16***	[1.14,1.17]
Chronic conditions (MIDUS 2)	1.30***	[1.24,1.37]	1.17***	[1.15,1.19]
BMI categories (MIDUS 2)
<25.00 (Normal weight)	REF.		REF.
25.00–29.99 (Overweight)	1.13	[0.89,1.44]	1.12**	[1.04,1.20]
>=30 (Obese)	1.80***	[1.42,2.28]	1.52***	[1.42,1.63]
CIDI-SF depression (MIDUS 2)	1.42**	[1.12,1.79]	1.19***	[1.10,1.28]
Smoking status (MIDUS 2)
Never smoked	REF.		REF.
Ex-smoker	1.26*	[1.04,1.53]	1.11***	[1.05,1.18]
Current smoker	1.52**	[1.19,1.94]	1.41***	[1.31,1.52]
Sleep problems (MIDUS 1)	1.55***	[1.26,1.90]	1.28***	[1.20,1.37]

^*p<.05;

^**p<.01;

^***p<.001