Topic summary
Left-handedness
Extracted from the Wikipedia article Handedness.
Sex
According to a meta-analysis of 144 studies totalling 1,787,629 participants, the best estimate of the male to female odds ratio was 1.23, indicating that men are 23% more likely to be left-handed. For instance, if the prevalence of female left-handedness was 10%, the prevalence of male left-handedness would be approximately 12% (10% prevalence of left-handedness among women multiplied by an odds ratio of 1:1.23 for women: men results in a 12.3% prevalence of left-handedness among men).