Ralf Kuja-Halkola
No ORCID on file
· 3 papers in corpus
observational
2025
Hormonal contraception and the risk of suicidal behaviour: a Swedish nationwide register-based study
OBJECTIVES: To determine whether hormonal contraceptives are associated with subsequent risks of suicidal behaviour and depression among women of reproductive age. DESIGN: Nationwide register-based study. SETTING: Swedish national populat…
observational
2016
OBJECTIVES: Despite the high prevalence of endometriosis among women of reproductive age, risk factors or markers for developing the condition remain largely unknown. Many of the published studies are based on small selected samples. We the…
observational
2015
OBJECTIVE: To estimate the relative contribution of genetic influences and prevalence on endometriosis. DESIGN: Analysis of self-reported data from a nationwide population-based twin registry. SETTING: Not applicable. PATIENT(S): A total…