Table 4 Random-effects model for the results of the meta-analysis of studies comparing the effect of high and low SDF on the fertility parameters using (a) SCSA in bulls (b) SCSA in stallions (c) Halomax in bulls

a Random-effects model (k = 6)

Estimate

se

Z

p

CI Lower Bound

CI Upper Bound

Intercept

0.995

0.198

5.03

 < .001

0.607

1.382

b Random-effects model (k = 5)

Estimate

se

Z

p

CI Lower Bound

CI Upper Bound

Intercept

0.644

0.108

5.95

 < .001

0.432

0.856

c Random-effects model (k = 6)

Estimate

se

Z

p

CI Lower Bound

CI Upper Bound

Intercept

1.85

0.595

3.10

0.002

0.680

3.012