2026-10-10T17:33:13Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34047467 2026-10-01T17:23:43Z category_24 category_39 category_734 category_106 portal_5 item_type_1 month_year_10_2026

<p>Share of professional players born in each birth quarter, by birth cohort.</p> Thomas Ulrich Grund (25157603) Evolutionary Biology Ecology Biological Sciences not elsewhere classified Science Policy varies across countries relative age effects relative age effect gross domestic product 2005 &# 8211 1985 &# 8211 population &# 8212 five birth cohorts national footballing strength players born early 2009 show birth &# 8212 players born 2009 ), xlink "> sports science robust findings per capita inconsistent associations historical variation historical increase held fixed findings provide date data comparative benchmark common macro <p>Dashed line indicates equal representation across birth quarters (25%).</p> 2026-10-01T17:23:34Z Image Figure 10.1371/journal.pone.0354928.g003 https://figshare.com/articles/figure/_p_Share_of_professional_players_born_in_each_birth_quarter_by_birth_cohort_p_/34047467 CC BY 4.0