Drinking patterns and problems, drug use and health services utilization: a comparison of two regions in the US general population.

While substance abuse has been found to be over-represented in some primary care settings, we do not know under what circumstances this association may vary, and whether it may be linked to differences in attitudes regarding alcohol use as reflected in regional rates of abstention and heavy or problem drinking. Data are reported from the Southern and Western regions of the 1995 National Alcohol Survey. Alcohol consumption variables were not found to be predictive of primary care utilization. Main effects were found for heavier drinking on emergency room (ER) use for an injury, and interactive effects of region were found for consequences of drinking, with those in the South who reported consequences more likely to have used the ER for either an injury or illness than those in the West. These data suggest that ER utilization may be related to regional differences in drinking patterns, while primary care utilization may not be.