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Abstract
Background: To study sex-related differences in quality of life, asthma control and asthma management in different age groups. Methods: A cross-sectional survey and patient record study in primary and secondary care. A total of 1226 patients in primary and 499 in secondary care, ages 18–75 and randomly selected, with a response rate of 71%. Patients were classified into four groups, 18–34, 35–49, 50–64 and 65–75 years. Results: Younger women (18–49 years) had a lower total MiniAQLQ score than men in the same age group (5.41 vs. 5.80, p < 0.001), while no significant difference was found between older women and men (50–75 years) (5.08 vs. 5.16, p = 0.42). The sex differences in the younger group remained significant after adjusting for medication, educational level, smoking, body mass index, allergy and depression (p = 0.008). The odds ratios for younger women to have night-awakenings was 1.7 (95%CI 1.07–2.57), for asthma exacerbations 1.9 (95%CI 1.21–2.98) and for not achieving asthma control 1.5 (95%CI 1.00–2.13) when adjusting for smoking, educational level and body mass index. No differences in asthma control were found when comparing older women with men of similar ages. Conclusions: Younger women had lower quality of life and less often asthma control than men in the same age range, while no corresponding sex differences were found between older women and men of similar ages. Female sex hormones could be an important factor affecting these outcomes.