Table 3 – Cycles with and without LH supplementation: serum estradiol levels on the day of hCG administration
Trail rec FSH +rec LH rec FSH WMD 95%CI fixed
n mean±sd (pmol/l) n mean±sd (pmol/l)
Tarlatzis 2006 55 1901±1073 57 1539±723 362 24.2, 670
Marrs 2004 212 9004±5162 219 8435±4853 569 -376, 1514
Lisi 2002 122 1221±58 331 1072±36 49 40.1, 57.9
Total 389 607
Pooled effect size
Fixed effects (Mulrow-Oxman)
49.4 38.4, 60.4

Z (test WMD + differs from 0)= 8.8 p<0.0001
Non-combinability:
-Cohran Q = 4.41 (df=2) p=0.11