Physical health of the cohort members
Almost 8% of the cohort had problems with vision that could not be corrected by glasses or contact lenses, and 24% of males and 31.4% of females needed glasses or contact lenses.Approximately 8% of both males and females reported hearing problems. Less than 0.3% of the cohort reported that they had been diagnosed with epilepsy, and 3.5% reported that they had been diagnosed with anxiety; the proportions were similar for males and females. In terms of BMI, 21.8% of females and 6.2% of males were underweight, 9.7% of females and 21.7%of males were overweight, and 9.9% of females and 22.7% of males were obese. Family history of death by injury was also considered:2.6% of males and 3.1% of females reported that their father
had died due to injury, and 4.8% and 5.7% reported that their
mother had died due to injury. It should be noted that 73.2% of
the cohort reported that their father was still alive, and 88.1%
reported that their mother was still alive (data not shown).