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. 2021 Jul 16;36(8):1571–1577. doi: 10.1038/s41433-021-01675-y

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — a Sex ratio in countries with samples of over 150 patients and corresponding sex ratio at birth. Black dot—sex ratio in each country, bars—95% confidence interval of the sex ratio, and red dot—sex ratio at birth. Significant differences were found only in India (corrected p = 0.008). b Sex ratio on whole sample analysis, lower-middle income countries and Asia, with data from India excluded, and corresponding sex ratio at birth. Black dot—sex ratio in each region/continent, bars—95% confidence interval of the sex ratio, and red dot—sex ratio at birth. On two-sided proportions test, differences were found to be significant only on whole sample analysis (p = 0.025) and analysis of Asian countries (corrected p = 0.036).