Table 2.
Response variable | Step | r2 | p-value | Regressors | Partial r |
---|---|---|---|---|---|
Ovary weight | 1 | 0.86 | < 0.0001 | Body weight | 0.93 |
2 | 0.91 | < 0.0001 | Body weight | 0.92 | |
Stage | 0.57 | ||||
3 | 0.97 | < 0.0001 | Body weight | 0.69 | |
Stage | 0.82 | ||||
Embryo number | 0.82 | ||||
Embryo numbera | 1 | 0.64 | < 0.0001 | Standard length | 0.80 |
2 | 0.77 | < 0.0001 | Standard length | 0.86 | |
Embryo dry weighta | −0.61 | ||||
Embryo wet weighta, b | 1 | 0.66 | < 0.0001 | Stage | 0.81 |
Analyses involving embryo number or embryo weight include embryos at stage 3 or greater; staging based on Haynes (1995).
Embryo wet weight was positively correlated with both stage (shown) and maternal body weight (r2 = 0.21, p < 0.0001). However, when both are included in a stepwise regression model for embryo wet weight, only stage enters the model.