Relationships between female infertility and female genital infections and pelvic inflammatory disease: a population-based nested controlled study

OBJECTIVES: Our purpose was to examine the associations of female genital infections and certain comorbidities with infertility. METHODS: The Taiwan National Health Research Database was searched for women with a new diagnosis of infertility between 2000 and 2013. Women without a diagnosis of infertility served as a control group and were matched with the infertility cases by age (±3 years) and index year. They were divided into two groups: ≤40 years old and >40 years old. Univariate and multivariate conditional logistic regression models were employed to identify the risk factors associa...