Data for "The role of miscarriage and sororal birth order in male same-sex orientation: Theoretical predictions and empirical data"

Population data. Dataset already publicly accessible: Samoa: https://doi.org/10.1073/pnas.2313284120 Czeck republic: https://osf.io/ugx6t/ Dataset provided: Polynesia: Polynesia.csv Canada: PROBANDS.SAV . This file (spss format) corresponds to the data collected and analysed by Blanchard & Bogaert. 1996. Homosexuality in men and number of older brothers. American Journal of Psychiatry, 153: 27–31. This file was sent by Ray Blanchard, with the comment: "In the file named PROBANDS.SAV you can pull the 604 matched cases by selecting on mbo_subs = 1. You can pull a slightly larger but still well-matched sample of 736 cases by selecting on lbo_subs = 1." Deposited here with the agreement of Ray Blanchard. Iran: Iran.csv. These data are from Sadr-Bazzaz & Vasey. 2025. Birth order and sibling sex ratio predict same-sex sexual attraction in Iranian cisgender and transgender adult males and females. Archives of Sexual Behavior. https://doi.org/10.1007/s10508-025-03249-5. France: France.csv. Dataset source: 10.5281/zenodo.6323470 (filtered to exclude bisexual individuals). Indonesia: Indonesia.csv. Dataset source: 10.5281/zenodo.6323470 (filtered to exclude bisexual individuals). Greece: Greece.csv. Dataset source: 10.5281/zenodo.6323470 (filtered to exclude bisexual individuals).