Kaplan–Meier plot of proportion of persons convicted (excluding traffic offenses) for the first time in the background population (thin line) and in men with Klinefelter's syndrome (bold line). Kaplan–Meier plot of proportion of persons convicted (excluding traffic offenses) for the first time in the background population (thin line) and in men with Klinefelter's syndrome (bold line). All were 15–70 years of age. Kirstine Stochholm et al. BMJ Open 2012;2:e000650 ©2012 by British Medical Journal Publishing Group