Table 3.

Associations of Rh-negativity and covariates with each variable related to sexual life and reproduction. This table shows the results (standardised beta coefficients) of eleven univariate GLM analyses (Type III sums of squares) analysing associations between variables related to sexual life and reproduction (first column) and Rh-negativity and covariates. In accordance with the preregistration, each model includes only covariates with Kendall’s Tau > 0.02 or < − 0.02 for correlation with output variables (see Supplementary Table S3). Current partnership, church membership, and Rh-negativity were binary variables with 0 indicating no current partnership, no church membership, and a positive Rh phenotype, and 1 indicating being in a partnership, church membership, and a negative Rh phenotype. Associations with p values under 0.05 are in bold and those with p values under 0.005 are marked with asterisks.

	Age	Socioeconomic status	Current partnership	Height	Size of place of residence	Education	Church membership	Rh-negativity	Rh–age interaction
Women
Age at menarche	0.130*			0.107*		0.031		0.028	− 0.037
Age at first sexual intercourse	0.105*		− 0.143*	0.032		0.240*	0.377*	0.007	0.011
Sexual desire	− 0.170*	− 0.001	− 0.495*			− 0.016	− 0.168*	− 0.014	0.008
Sexual activity	− 0.174*	0.004	0.927*	0.018				− 0.022	− 0.032
Number of sexual partners	− 0.140*		− 0.001	0.024	0.017		− 0.197*	− 0.021	0.044
Number of children	0.676*		0.335*	0.007		− 0.053*	0.138*	0.012	0.032
Men
Age at first sexual intercourse	0.108*		− 0.160*		− 0.046*	0.194*	0.248*	− 0.080	− 0.047
Sexual desire	− 0.149*		− 0.244*			− 0.005	− 0.130*	0.025	0.064
Sexual activity	− 0.122*	0.032*	0.953*	0.007			− 0.127*	0.036	0.051
Number of sexual partners	− 0.026	0.041*	0.186*	0.017	0.017		− 0.202*	0.073	− 0.044
Number of children	0.590*	0.032*	0.492*		− 0.027*	− 0.001	0.158*	0.046	0.023