… Delayed childbearing has led to declining birth rates globally in developed countries and an
increasing number of couples are involuntarily childless or have fewer children than desired …

… previous trend in which fertility rates in the early 30s increased … in cohort fertility starting with
the 1940s birth cohorts, cohort … childlessness rose slightly starting with the 1950s cohorts but …

… rural household registration intended to remain childless.34 … cohort analysis could be
conducted with this dataset. In this … proportion of childlessness across various birth cohorts by …

… increasing sex gap in childlessness among the Norwegian-born is largely linked to changes
in cohort sizes, ie fertility trends. … Percent childless at age 45, by sex and birth cohort, in …

… societies levels of childlessness have increased, and the increase in male … birth cohorts.
The population shares with three or more children have also been relatively stable over the last …

… a trend of increasing acceptance of unconventional practice and describe it as a cohort-…
Both males and females register a lower level as of 2005. In 2020, the period coefficients …

… In a national cohort, we combined information from five registries … Recent studies report no
increase in menstrual cycles … [26] and no increased risk of being diagnosed with infertility for …

… mean that current childbearing cohorts will end up with fewer children than previous cohorts,
or … Figure 2 shows that intended childlessness increased for both women (from 8% to 10%) …

… first births and an increase in childlessness are significant trends … Moreover, fertility measures
are based on birth registration … Before examining fertility trends across cohorts, this section …

… Temporal trends in CS rates by mode of conception were … This study observed an increased
rate of CS in relation to … CS contributed the most to the increased rate of CS in women with …