This study aimed to analyze changes in patterns of alcohol use from 1988 to 2004 amongst Polish (Warsaw) 15-year olds. Data were collected from 5 consecutive surveys, beginning in 1988 and conducted every four years. For each survey a comparable sampling approach, sample size (N >or =1461), procedures and instrument were used to ensure consistency of method across surveys. In 1988 a two-step cluster analysis was used to identify four distinct natural groups of drinkers "light", "heavier", "beer and wine" and "wine" drinkers. Between 1988 and 1992 the percentage of teenage infrequent drinkers decreased and the rate of heavy drinkers increased. A group of students drinking only beer appeared, whilst the group of wine drinkers disappeared. A group of students who drank alcohol to get drunk appeared in 1996. Between 2000 and 2004 drinking of various kinds of alcoholic beverages became more frequent, as did vodka abuse. Increased consumption amongst girls was also observed. The results are interpreted in the context of social change and several hypothetical causes of gender differences are discussed.