STUDY QUESTION What is the contemporary prevalence of infertility in world populations
and how do they differ by methodological and study characteristics? SUMMARY ANSWER …

It is predicted that Japan and European Union will soon experience appreciable decreases
in their populations due to persistently low total fertility rates (TFR) below replacement level …

Infertility is a disease of the male or female reproductive system defined by the failure to
achieve a pregnancy after 12 months or more of regular unprotected sexual intercourse …

BACKGROUND Family-planning policies have focused on contraceptive approaches to
avoid unintended pregnancies, postpone, or terminate pregnancies and mitigate population …

BACKGROUND Existing definitions of infertility lack uniformity, rendering comparisons in
prevalence between countries or over time problematic. The absence of an agreed definition …

BACKGROUND Diabetes mellitus (DM) is increasing in men of reproductive age. Despite
this, the prevalence of diabetes in men attending fertility clinics is largely unknown …

OBJECTIVE: Different definitions of infertility are used in clinical practice as well as in
epidemiological and demographic research. This study assessed whether the definition …

Background This is an updated version of the original Cochrane Review published in the
Cochrane Library in 2013 (Issue 8) on the risk of ovarian cancer in women using infertility …

Infections of the male genitourinary tract may contribute to infertility to a various extent
depending on the site of inflammation. Especially in prostatitis, the exact classification of the …

To explore the prevalence and risk factors of infertility in Iran, a total of 12 285 ever‐married
women aged 15–50 years old and their husbands (if available) were interviewed by 82 …