European journal of preventive cardiology · 2024
Parity, infertility, age at first birth, and risk of atrial fibrillation: data from the HUNT study.
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Morooka Hikaru, Haug Eirin B, Malmo Vegard, Loennechen Jan Pål, Mukamal Kenneth J, Sen Abhijit, Janszky Imre, Horn Julie
Аннотация
AIMS: Although parity, infertility, and age at first birth are important for later development of cardiovascular disease, research on their association with atrial fibrillation (AF) is limited.
METHODS AND RESULTS: We linked data from the population-based HUNT study and the Medical Birth Registry of Norway (MBRN) and validated medical records from local hospitals. A total of 24 015 women aged 45 years or older were followed for verified incident AF. Parity and age at first birth were retrieved from the MBRN or from self-reported questionnaires in the HUNT study. A history of infertility was self-reported on the HUNT questionnaire. Cox proportional hazards models were used to calculate hazard ratios (HRs) for the multivariable-adjusted associations of parity, infertility, and age at first birth with risk of AF. During a median follow-up of 12.8 years, 1448 (6.0%) participants developed AF. Women with higher parity (four or more births vs. two births) were at 21% higher risk of AF [HR 1.21, 95% confidence interval (CI) 1.05-1.39]. A history of infertility was also associated with the risk of AF (HR 1.20, 95% CI 1.02-1.42). Among parous women, younger age at first birth (<20 vs. 20-29 years) was associated with a 20% higher risk of AF (HR 1.20, 95% CI 1.03-1.40).
CONCLUSION: Women with four or more births, or a history of infertility, or younger age at first birth have approximately a 20% higher risk of AF among women over 45 years old.
METHODS AND RESULTS: We linked data from the population-based HUNT study and the Medical Birth Registry of Norway (MBRN) and validated medical records from local hospitals. A total of 24 015 women aged 45 years or older were followed for verified incident AF. Parity and age at first birth were retrieved from the MBRN or from self-reported questionnaires in the HUNT study. A history of infertility was self-reported on the HUNT questionnaire. Cox proportional hazards models were used to calculate hazard ratios (HRs) for the multivariable-adjusted associations of parity, infertility, and age at first birth with risk of AF. During a median follow-up of 12.8 years, 1448 (6.0%) participants developed AF. Women with higher parity (four or more births vs. two births) were at 21% higher risk of AF [HR 1.21, 95% confidence interval (CI) 1.05-1.39]. A history of infertility was also associated with the risk of AF (HR 1.20, 95% CI 1.02-1.42). Among parous women, younger age at first birth (<20 vs. 20-29 years) was associated with a 20% higher risk of AF (HR 1.20, 95% CI 1.03-1.40).
CONCLUSION: Women with four or more births, or a history of infertility, or younger age at first birth have approximately a 20% higher risk of AF among women over 45 years old.