Table 8 Multifactor regression results.
From: Factors influencing sex ratio at birth in Krosno, Poland
Factor | Df | MS | F | p-value |
|---|---|---|---|---|
Maternal age | 3 | 1.1960 | 5.0273 | 0.0019 |
Birth order | 2 | 0.9980 | 4.1951 | 0.0156 |
Interpregnancy intervals | 3 | 0.2013 | 0.8460 | 0.4691 |
Season of birth | 3 | 0.4688 | 1.9706 | 0.1174 |
Heating season | 1 | 0.0598 | 0.2515 | 0.6163 |
Full model | 12 | 0.6253 | 2.6286 | 0.0020 |
