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Table 2 Baseline and cycle characteristics of the patients

From: Endometriosis fertility index score maybe more accurate for predicting the outcomes of in vitrofertilisation than r-AFS classification in women with endometriosis

Characteristic Total EFI r-AFS
≤5 score ≥6 score t(z) P c I-II stage III-IV stage t(z) P d
No. of cycles 199 84 115    61 138   
Average age(y)a 32.0 ± 4.2 33.3 ± 4.9 31.1 ± 3.3 3.789 0.000 32.5 ± 3.7 31.8 ± 4.4 1.085 0.279
Duration of infertility(y)b 5.0(3.0–7.0) 6.0(4.0–9.0) 4.0(2.0-6.0) −3.893 0.000 5.0(3.5–7.0) 4.0(2.0–7.0) −1.176 0.240
BMI(kg/m2)b 20.2(18.8–21.7) 20.2 (18.2–22.0) 20.3(18.9–21.7) −0.374 0.708 20.6(19.1–21.8) 20.0(18.5–21.6) −1.013 0.311
bFSH(iu/L)b 8.1(6.7–9.9) 8.6 (6.9–11.7 8.0(6.6–9.3) −1.645 0.100 7.9(6.3–9.3) 8.3(6.9–11.0) −1.683 0.092
bLH(iu/L)b 3.8(2.7–5.5) 3.8(2.7–5.3) 3.8(2.9–5.6) −0.009 0.993 3.7(2.7–5.5) 4.0(2.9–5.5) −0.706 0.480
E2(ng/L)b 42.4(27.0–61.9) 47.4(29.7–57.9) 42.0(27.3–64.7) −0.957 0.339 42.0(22.9–64.3) 45.9(27.1–60.5) −0.864 0.388
Antral follicle countb 10(6.0–14.0) 8.5(6.0–13.0) 11.0(8.0–14.0) −2.212 0.027 10.0(8.0–14.0) 9.5(6.0–14.0) −1.662 0.097
E2 level on DHCG (ng/L)b 1987.2(1122.6–3369.1) 1661.3 (925.2–3599.5) 2110.3(1239.8–3334.0) −1.255 0.209 2352.6 (1331.7–4241.5) 1796.9 (1012.2–3251.3) −2.065 0.039
Start dose of Gn(iu/day)b 225.0 (150.0–300.0) 225.0(150.0–300.0) 225.0(150.0–225.0) −2.401 0.016 225.0 (150.0–225.0) 225.0 (150.0–300.0) −1.853 0.064
Duration of stimulation(d)b 10(9.0 ~ 12.0) 10(9.0–12.0) 10(9.0–12.0) −0.497 0.619 11(9–11) 10(9–12) −0.214 0.830
Total dose of Gn(iu)a 2286.6 ± 926.4 2439.3 ± 1076.8 2175.0 ± 785.3 −1.909 0.058 2169.6 ± 784.5 2338.3 ± 980.8 −1.186 0.237
  1. Note: The Shapiro-Wilk test was performed to determine the normality of distribution. P >0.05 indicates the data followed a normal distribution.
  2. aThe normally distributed data are presented as mean ± SD, including age and total dose of Gn. The t-test was performed to analyse statistical significance.
  3. bThe non-normally distributed data are presented as median (25th-75th percentile). The non-parametric Mann–Whitney test was performed to calculate the Z-score.
  4. cComparison between the two EFI score groups (score ≤5 vs score ≥6).
  5. dComparison between the two r-AFS stage groups (stage I-II vs stage III-IV).