Table 2 Results from the mixed model on the effect of age on fertilization success and from the Wald test of the Cox proportional hazards model on embryo survival. In total we performed 40 IVF trials, n = 20 using sperm from adult males and n = 20 using sperm from old males
From: Age-dependent decline in sperm quality and function in a naturally short-lived vertebrate
Trait | Estimates ± SE | χ 2 | p | Hedges’ g (95% CIs) |
|---|---|---|---|---|
Fertilization success | 1.26 ± 0.20 | 38.556 | < 0.001 | 0.81 (0.17, 1.44) |
ß ± SE | z | p | ||
Embryo survival | 0.44 ± 0.12 | 3.05 | 0.002 | 0.48 (0.15, 0.81) |