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The incidence of gender-vocal articles, 1948–2018. Error bars are 95% CIs; pink line is a single-break segmented general linear model that shows a strong structural break around 2005, when the incidence rapidly increased: fits±1 SE. The fit of this model is superior to one with no break by Akaike information criterion (AIC). The red point gives the breakpoint; the error bars (not visible) are 95% CIs.
