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Table 1 The comparison of characteristics and COH parameters between pregnant and non-pregnant women

From: Association of basal serum testosterone levels with ovarian response and in vitro fertilization outcome

  Group 1 Group 2
Variables Non-pregnant cycles (n = 89) Pregnant cycles (n = 72) P value Non-pregnant cycles (n = 403) Pregnant cycles (n = 518) P value
Age (years) 32.2 ± 4.0 32.7 ± 3.8 0.352 31.9 ± 4.0 31.1 ± 4.1 0.003
BMI (kg/m2) 22.4 ± 2.9 2.2 ± 2.6 0.696 9.4 ± 1.5 9.4 ± 1.4 0.312
Pregnancy history 0.6 ± 0.5 0.6 ± 0.5 0.628 9.0 ± 3.9 9.0 ± 3.8 0.930
Basal FSH levels (IU/L) 11.8 ± 1.9 11.6 ± 1.7 0.424 7.5 ± 1.4 7.5 ± 1.4 0.947
Basal LH levels (IU/L) 5.4 ± 1.9 5.0 ± 2.1 0.260 4.3 ± 2.2 4.3 ± 2.2 0.974
Basal E2 levels (pg/ml) 43.3 ± 20.8 41.6 ± 18.3 0.581 43.3 ± 30.5 41.2 ± 31.4 0.300
Basal T levels (ng/dl) 48.3 ± 17.3 40.8 ± 18.1 0.008 47.8 ± 18.9 47.7 ± 19.9 0.907
Antral follicle count 9.8 ± 4.3 8.6 ± 4.6 0.099 11.6 ± 5.5 11.2 ± 5.7 0.217
Starting dose of gonadotropins (IU) 223.3 ± 54.6 228.1 ± 67.3 0.617 203.6 ± 36.7 198.6 ± 40.7 0.053
Number of oocytes retrieved 10.0 ± 4.4 9.0 ± 4.7 0.171 12.4 ± 5.4 12.4 ± 5.3 0.999
Number of follicles >14 mm 7.8 ± 3.5 7.1 ± 3.5 0.176 9.0 ± 3.9 9.0 ± 3.8 0.761
Days of stimulation 9.7 ± 1.6 10.5 ± 1.9 0.002 9.4 ± 1.5 9.4 ± 1.4 0.744
Total dose of gonadotropins (IU) 2477.8 ± 873.9 2936.1 ± 1249.9 0.010 2174.2 ± 826.8 2042.3 ± 728.7 0.012
Endometrial thickness on HCG day (cm) 1.1 ± 0.2 1.1 ± 0.2 0.521 1.0 ± 0.2 1.1 ± 0.2 0.001
Fertilization rate 0.8 ± 0.2 0.7 ± 0.2 0.202 0.7 ± 0.2 0.7 ± 0.2 0.615
Number of embryos cryopreserved 3.3 ± 2.9 2.4 ± 2.4 0.034 3.9 ± 3.4 4.1 ± 3.2 0.256
Number of good quality embryos 5.6 ± 2.9 4.5 ± 2.5 0.015 6.0 ± 3.4 6.3 ± 3.2 0.219
  1. Note: Data other than P values are mean ± SD.
  2. Dichotomy variable pregnancy history was represented by secondary infertility = 1 and primary infertility = 0.