Table 1 Past-year problem gambling in Sweden in 2018, number of affected individuals. Number and percentage of adults with low-risk, moderate-risk and problem gambling, and estimated number of other individuals living in their households. Results are based on the Swelogs survey. The adult population is 16â87âyears. Low-risk gamblers have a PGSI index of 1â2, moderate-risk gamblers of 3â7, and problem gamblers of 8â27