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Table 4 Baseline characteristics and IVF outcome in POA and control groups in women with age 38–41 years old

From: Predictive value of age-specific FSH levels for IVF-ET outcome in women with normal ovarian function

  38 ~ 41 years old t/z(χ 2 ) p
  Control POA   
n 59 39   
Age (y)a 39.07 ± 1.10 38.95 ± 1.05 −0.535 0.594
Infertility years(y)a 6.95 ± 5.21 6.59 ± 4.08 −0.387 0.700
BMI (kg/m2)a 22.36 ± 3.28 21.62 ± 1.64 −1.481 0.142
FSH(IU/L)a 7.05 ± 0.97 9.79 ± 0.87 14.27 <0.001
LH(IU/L)b 3.39(2.48–4.23) 3.63(3.01–4.53) −1.513 0.13
E2 (ng/L)b 35.95(29.60–49.80) 39.71(31.38–53.97) −0.947 0.344
FSH/LHb 2.12(1.63–2.84) 2.84(2.13–3.20) 10.175 0.001
AFC(n)a 11.17 ± 5.09 9.58 ± 3.33 −1.705 0.092
Total dose of Gn (IU)a 2,633.63 ± 1000.45 3,388.92 ± 1638.73 2.778 0.007
E2 level on DHCG (ng/L)b 2,474.20 (1,789.25–3,954.14) 2,437.00 (1,272.67–3,719.84) 0.685 0.494
Number of retrieved oocytes (n)a 10.26 ± 5.75 8.36 ± 4.36 −1.698 0.093
The rate of POR (%)c 5.08(3/59) 20.51(8/39) 5.609 0.018d
Number of frozen embryos (n)b 2.00(0.00–4.00) 2.00(0.00–4.00) −0.470 0.638
Number of available embryos (n)b 4.50(3.00–7.00) 5.00(3.00–7.00) −0.129 0.898
Fertilization rate (%)c 79.29(58.33–96.25) 89.44(64.39–100.00) −1.587 0.113
Cleave rage rate (%)c 98.75 (100.00–100.00) 100.00 (100.00–100.0) −1.941 0.052
Cancellation rate (%)c 1.70(1/59) 7.69(3/39) 2.157 0.142e
Pregnancy rate (%)c 25.86(15/58) 34.29(12/36) 0.606 0.436
  1. aThe normally distributed data are presented as the mean ± SD, including age, infertility years, BMI, FSH, AFC, total dose of Gn, and number of retrieved oocytes. The t-test was performed to analyze statistical significance
  2. bThe non-normally distributed data are presented as the median (25–75th percentile). The non-parametric Mann–Whitney test was performed to calculate the Z-score
  3. cThe chi-square (χ 2) test was performed to analyze statistical significance
  4. dThe rate of POR = (the cycles of oocyte yields ≤ 3 + the cycles cancelled egg retrieval)/the total cycles
  5. eThe cancellation rate only included the cycles of cancelled egg retrieval