Table 3 Marginal mean of normal fertilisation rate by generalized linear regression

 0–13.2 (10.26)

0.593 ± 0.201

0.595 (0.567,0.623)

 13.3–25.9 (19.40)

0.626 ± 0.205

0.627 (0.609,0.645)

  > 25.9 (29.80)

0.658 ± 0.191

0.661 (0.631,0.691)

 P^c

0.002

0.007

 0–16.2 (13.10)

0.614 ± 0.191

0.626 (0.597,0.655)

 16.3–32.8 (23.70)

0.627 ± 0.204

0.631 (0.613,0.649)

  > 32.8 (37.30)

0.634 ± 0.205

0.625 (0.596,0.653)

 P^c

0.542

0.903