I determined correlations regarding redheadedness and you may efficiency parameters having sex and probably confounding details (ages, measurements of host to quarters, most recent sexual commitment updates, real situation, and you can mental disease). As an instance, women got even more intensively reddish tresses than just dudes and redheadedness coordinated negatively as we grow older. Out-of most other prospective covariates, current sexual partnership standing is notably associated with four out of eight details regarding sexual behavior. Measurements of place of quarters, bodily disease, and mental disease failed to exhibit of many significant connections which have predictors and productivity parameters (look for Second Desk S3).
Initially, we analyzed the effect of redheadedness on variables related to sexual life with GLM. In the first model for sexual desire, there was a significant linear effect of redheadedness and a significant effect of sex. Sexual desire was significantly higher in men (? = 0.529, SE = 0.148, p < 0.001)>
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