Background: We aimed to test the hypothesis that gender divide in disability pensioning is attributable to differences in health, mental distress, occupation, and income.
Methods: In a health survey between 2000 and 2001, a total of 11,072 (48.7%) of all Oslo inhabitants aged 40, 45, 59, and 60 years participated. Survey data were linked to data from the National Insurance Administration and Statistics Norway for 10,421 of the participants, and 9,195 of those were eligible to receive disability pension at the end of 2000. Occupation, general health, and mental distress were self-reported, while income was obtained from official statistics.
Results: Approximately 5% of the eligible sample received a disability pension during the four years following the health survey. The age-adjusted odds of receiving disability pension for women was greater (odds ratio = 1.41) than for men. Self-reported health significantly contributed to the risk of receiving a pension, and seemed to reduce the imbalance in disability rates between the genders, as did adjusting for level of mental distress. Further adjustment for occupation and working conditions reduced the gender divide to an insignificant level, and the inclusion of income level (income three years prior to pensioning) completely eliminated any gender difference in risk of receiving a pension.
Conclusions: Gender differences in disability pensioning in Oslo are attributable to women's poorer self-reported health, greater levels of mental distress, lower wages, and more unfavourable working conditions such as job strain and less control over work.