First-Difference Estimation of BMI Change from Wave 1 to Wave 2—OLS

	Model 1		Model 2
Independent variables	Men	Women	Men	Women
Alcohol consumption variables (changes between waves)
Frequency change: days of drinking alcohol, past year (in 100s)	0.012 (0.025)	−0.041 (0.041)	0.017 (0.025)	−0.039 (0.038)
Intensity change: average number of drinks per episode, past year	0.030*** (0.009)	0.013 (0.020)	0.033*** (0.009)	0.013 (0.018)
Control variables (changes between waves)
Household income in $10,000s			0.0084* (0.0052)	0.0144** (0.0065)
Number of persons in household			0.013 (0.019)	0.042* (0.022)
Norm-based (SF-12) mental health scale			0.0036* (0.0020)	−0.0096*** (0.0021)
Current marital status (reference is no change)
Not married in Wave 1 → married in Wave 2			0.75*** (0.11)	0.56*** (0.13)
Married in Wave 1 → not married in Wave 2			−0.32** (0.13)	−0.49** (0.14)
Employment status (reference is no change)
Not employed in Wave 1 → employed in Wave 2			0.361*** (0.086)	0.17* (0.09)
Employed in Wave 1 → not employed in Wave 2			0.195*** (0.078)	0.439*** (0.084)
Smoking status (reference is no change)
Non-smoker in Wave 1 → smoker in Wave 2			0.21* (0.12)	−0.29* (0.17)
Smoker in Wave 1 → non-smoker in Wave 2			0.403*** (0.084)	0.67*** (0.12)
Living in MSA (reference is no change)
Non-MSA in Wave 1 → MSA in Wave 2			−0.073 (0.061)	−0.108 (0.071)
MSA in Wave 1 → non-MSA in Wave 2			0.107 (0.068)	−0.017 (0.076)
Constant	0.0491*** (0.022)	0.707*** (0.025)	0.376*** (0.030)	0.620*** (0.034)

Notes: All specifications are estimated with the robust regression technique (StataCorp, 2005). The dependent variable is change in BMI from Wave 1 to Wave 2.

^*significant at the 10% level;

^**significant at the 5% level;

^***significant at the 1% level.