Table 4.

Predictors of Mobility Difficulty at T2 (2014): Odds Ratios From Weighted Lagged Dependent Variable Logistic Regression Models

Variables	Walk several blocks	Go up several flights of stairs	Lift and carry ~10 pounds	Stoop
HRS	0.647	0.566	0.690	0.600
Any difficulty specified task at T1	8.039**	6.508**	6.085**	5.861**
Difficulty at T1 × HRS	0.876	0.934	1.031	0.952
Age (centered at age 50)	1.039**	1.031**	1.042**	1.041**
Age centered × HRS	0.983	0.985	0.966*	0.963*
Age (centered at age 50) squared	1.001	1.001	1.001	1.000
Age centered squared × HRS	1.001	1.001	1.002*	1.001
Female	1.600**	1.614**	2.069**	1.227
Female × HRS	0.802	0.948	1.116	1.052
Education (college graduate+ omitted)
Less than high school	1.248	0.947	0.850	0.709
GED/high school graduate	2.279**	1.561*	1.105	1.445
Some college	1.504	1.537*	1.202	1.425
Less than high school × HRS	1.559	1.758	2.332	2.094
GED/high school graduate × HRS	0.691	0.960	1.256	0.963
Some college × HRS	0.957	0.869	0.990	0.841
Currently married (vs not currently married)	0.841	0.962	1.055	0.836
Currently married × HRS	0.945	1.020	0.765	1.086
Non-Hispanic white vs others	1.004	0.638	1.166	1.062
White × HRS	1.015	1.418	0.641	1.015
Ever been told has high blood pressure	1.330	1.249	1.206	1.221
Blood pressure × HRS	1.079	1.085	1.178	1.105
Body mass index (normal weight omitted)
Underweight	4.444*	2.804	2.021	5.240*
Overweight	1.118	1.135	0.978	1.672*
Obese	2.638**	2.801**	2.175**	2.825**
Underweight × HRS	0.229	0.476	0.516	0.257
Overweight × HRS	1.178	1.190	1.051	0.830
Obese × HRS	0.953	0.885	0.793	0.811
Smoking behavior (never smoked omitted)
Smokes now	2.041**	2.662**	2.346**	1.231
Quit smoking	1.313	1.074	1.338	1.001
Smokes now × HRS	1.094	0.738	0.871	1.196
Quit smoking × HRS	0.862	0.965	0.889	1.058
Constant	0.090**	0.217**	0.078**	0.281**
Observations	11,863	11,863	11,863	11,863
Model F-statistic (p-value)	59.87 (<.01)	62.06 (<.01)	58.98 (<.01)	55.80 (<.01)

Note: HRS = Health and Retirement Study.

**p < .01. *p < .05.