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Table 1 Baseline characteristics

From: Effect of intrauterine injection of human chorionic gonadotropin before embryo transfer on clinical pregnancy rates from in vitrofertilisation cycles: a prospective study

  Control group Intervention group hCG P value
  n 109 n 101  
Age in years (mean _ SD, range) 7.3 ± 4.0 36.4 ± 4.5 .151
Body mass index (mean _ SD, range) 26.9 ± 2.9 27.1 ± 2.7 .572
Infertility duration years (mean _ SD, range) 3.5 ± 1.6 3.3 ± 1.6 .578
Previous IVF cycles 32 (29.3%) 28 (27.7%) .974
Number of Oocytes retrieved (mean _ SD, range) 9.6 ± 7.3 8.9 ± 5.0 .483
Number of Fertilised oocytes (mean _ SD, range) 6.6 ± 3.6 6.3 ± 3.3 .594
Infertility types
Female 32 (29.3%) 28 (27.7%)  
Male 22 (20.1%) 19 (18.8%)  
Mixed 42 (38.5%) 44 (43.5%)  
Idiopathic 13 (11.9%) 10 (9.9%)  
Technique
IVF 67 (61.5%) 53 (52.5%)  
ICSI 37 (33.9%) 39 (38.6%)  
PICSI 5 (4.6%) 9 (8.9%)  
Types of embryos
Fresh embryos from non-donor 43 (39.4%) 53 (52.5%)  
Thawed embryos from non-donor 30 (27.5%) 25 (24.8%)  
Donor fresh embryos 29 (26.6%) 17 (16.8%)  
Donor thawed embryos 4 (3.7%) 1 (1.0%)  
Thawed oocytes from non-donor 3 (2.8%) 5 (5.0%)  
Fertilisation rate per retrieved oocytes 74.8% ± 19.2 75.1% ± 18.9 .931
Embryos transferred (mean _ SD, range) 2.1 ± 0.6 2.1 ± 0.5 .469
  1. ICSI intra citoplasmic sperm injection. IVF In vitro fertilisation. PICSI physiological ICSI.