(University of Toronto Press, 2007-09) Williams, Robert J.; Wood, Robert T.
The proportion of gambling revenue derived from problem gamblers is an important issue when considering the appropriateness of government-sponsored gambling. Figures obtained from prior research are tentative due to methodological problems and the mismatch between reported expenditures and actual gambling revenue. Using improved methods for assessing the prevalence of problem gambling and self-reported gambling expenditures, the present study estimates that the 4.8% of problem gamblers in Ontario in 2003 accounted for approximately 36% of Ontario gambling revenue. This proportion varied as a function of game type, with a lower proportion for lotteries, instant win tickets, bingo, and raffles and a higher proportion for horse racing and slot machines. Key Words: gambling, problem gambling, government, Ontario, OLG