The core result -- the prevalence of obesity stratified by family history of alcoholism in the 1991–92 NLAES and 2001–02 NESARC -- is quantified in Table 2. While there was only a modest association between FH-Alc and obesity in 1991–92, a highly significant association for both genders was observed in 2001–02. The bivariate odds ratio describing the association was significantly higher for women in 2001–02 compared with women ten years earlier (OR=1.48 vs. OR=1.06, cross survey difference test: z=5.77, p<0.0001). There was a similar secular trend for men, but lower in magnitude of marginal statistical significance (OR=1.26 vs. OR=1.08; z=1.92, p=0.055). Although the overall prevalence of obesity for both sexes increased from NLAES to NESARC, the increase was significantly stronger among those with a family history of alcoholism, and this effect was particularly pronounced for women.
