Sofie Hansen1, Nicole Probst-Hensch2, Robert Bettschart3, Marco Pons4, Bénédicte Leynaert5, Francisco Gómez Real6, Thierry Rochat7, Julia Dratva2, Cornelia Schneider2, Dirk Keidel2, Christian Schindler2, Elisabeth Zemp2. 1. Swiss Tropical and Public Health Institute, Socinstrasse 57, 4051 Basel, Switzerland; University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland. Electronic address: sofie.hansen@unibas.ch. 2. Swiss Tropical and Public Health Institute, Socinstrasse 57, 4051 Basel, Switzerland; University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland. 3. Lungenpraxis, Medizinische Klinik Hirslanden, Schanzweg 7, 5000 Aarau, Switzerland. 4. Sede Civico, Ospedale Regionale di Lugano, Via Tesserete 46, 6900 Lugano, Switzerland. 5. INSERM, Faculty de Medicine X, Faculté de Médecine site Bichat, 16 Rue Henri Huchard, 75890 Paris cedex 18, France. 6. Department of Gynecology and Obstetrics, Haukeland University Hospital, Jonas Lies vei 71, N-5058 Bergen, Norway; Department of Clinical Science, University of Bergen, Jonas Lies veg 87, 5021 Bergen, Norway. 7. Division of Pulmonary Medicine, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Genève, Switzerland; Hôpital du Valais (RSV) - Centre Hospitalier du Valais Romand, Av. du Grand Champsec 86, case postale 696, 1951 Sion, Wallis, Switzerland.
Abstract
RATIONALE: The association between early menarche and new onset of asthma warrants further investigation in those aged >30 years. OBJECTIVES: Using data from the Swiss Cohort Study on Air Pollution and Lung and Heart Diseases in Adults (SAPALDIA), we investigated whether early menarche was associated with new onset of asthma in women aged 18-60 years at baseline. METHODS: Our analysis included 2492 women with information on age at menarche and doctor-diagnosed asthma, who had been asthma free at the time of menarche and had complete covariate information. New onset of asthma was defined as newly reported doctor-diagnosed asthma which occurred at least one year after menarche. Asthma incidence and its association with early menarche was analysed using logistic regression, adjusting for age, atopy, smoking, BMI, parental asthma, urbanity, education and study area, and additionally stratifying by atopy and BMI. RESULTS: After adjustment of relevant confounders, women with early menarche did not have a significantly higher risk of onset of asthma than women without early menarche (OR 1.23, 95% CI 0.85-1.80). Young atopic women with early menarche appeared to have an increased risk of asthma compared with non-atopic women (OR 2.21, 95% CI 0.90-5.43); however, our results did not reach statistical significance. CONCLUSION: We could not substantiate an association of early menarche with new onset of asthma in this Swiss population-based cohort aged 18-60 years at baseline. Future studies may need to prospectively assess age of menarche to investigate the association with new onset of asthma in those aged >30 years.
RATIONALE: The association between early menarche and new onset of asthma warrants further investigation in those aged >30 years. OBJECTIVES: Using data from the Swiss Cohort Study on Air Pollution and Lung and Heart Diseases in Adults (SAPALDIA), we investigated whether early menarche was associated with new onset of asthma in women aged 18-60 years at baseline. METHODS: Our analysis included 2492 women with information on age at menarche and doctor-diagnosed asthma, who had been asthma free at the time of menarche and had complete covariate information. New onset of asthma was defined as newly reported doctor-diagnosed asthma which occurred at least one year after menarche. Asthma incidence and its association with early menarche was analysed using logistic regression, adjusting for age, atopy, smoking, BMI, parental asthma, urbanity, education and study area, and additionally stratifying by atopy and BMI. RESULTS: After adjustment of relevant confounders, women with early menarche did not have a significantly higher risk of onset of asthma than women without early menarche (OR 1.23, 95% CI 0.85-1.80). Young atopic women with early menarche appeared to have an increased risk of asthma compared with non-atopic women (OR 2.21, 95% CI 0.90-5.43); however, our results did not reach statistical significance. CONCLUSION: We could not substantiate an association of early menarche with new onset of asthma in this Swiss population-based cohort aged 18-60 years at baseline. Future studies may need to prospectively assess age of menarche to investigate the association with new onset of asthma in those aged >30 years.
Authors: Cosetta Minelli; Diana A van der Plaat; Bénédicte Leynaert; Raquel Granell; Andre F S Amaral; Miguel Pereira; Osama Mahmoud; James Potts; Nuala A Sheehan; Jack Bowden; John Thompson; Debbie Jarvis; George Davey Smith; John Henderson Journal: PLoS Med Date: 2018-08-07 Impact factor: 11.069