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Table 1 Various patients characteristics (age, number of treatment cycles and infertility duratin) among the different patients groups. Data presented as Mean ± SD (range).

From: Human chorionic gonadotropin administration is associated with high pregnancy rates during ovarian stimulation and timed intercourse or intrauterine insemination

  All groups Group 1 HCG-only Group 2 hCG plus LH-surge Group 3 LH-onlysurge only Group 4 All hCG (sum of groups 1 and 2 Group 5 All LH-surge cycles Sum of groups 2 and 3
No. of cycles 2000 1146 548 306 1694 854
Age 34.3 ± 4.3 (20–45) 34.2 ± 4.3 (20–45) 34.7 ± 4.1 (24–45) 33.95 ± 4.3 (23–45) 34.36 ± 4.2 (20–45) 34.44 ± 4.2 (23–45)
No. of inseminations 1.1 ± 0.3 (1–2) 1.12 ± 0.32 (1–2) 1.39 ± 0.5 (1–2) 1.24 ± 0.42 (1–2) 1.28 ± 0.45 (1–2) 1.28 ± 0.5 (1–2)
No. of prior treatment cycles 2.9 ± 2.2 (1–7) 2.8 ± 2.1 (1–7) 3.1 ± 2.2 (1–6) 2.71 ± 2.4 (1–6) 2.9 ± 2.14 (1–7) 2.96 ± 2.3 (1–6)
  1. There was no statistically signbificant difference among the different groups as regards the age, number of inseminations or prior treatment cycles.