A 2005 meta-analysis by Doris Weichselbaumer and Rudolf Winter-Ebmer of more than 260 published pay gap studies for over 60 countries found that, from the 1960s to the 1990s, raw (aka unadjusted) wage differentials worldwide have fallen substantially from around 65% to 30%.
Podle metaanalýzy z r. 2005 vedené Doris Weichselbaumer a Rudolfem Winter-Ebmerem, která porovnávala více než 260 studií ze 60 států mezi roky 1960 a 1990, za tři desítky let klesl rozdíl mezi ženami a muži v hrubém platu ze 65 % na zhruba 30 %.