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Table 4 Outcomes of group G and group GP stratified by 3 cycles of ET before and after PS matching

From: Does the transfer of a poor quality embryo with a good quality embryo benefit poor prognosis patients?

  Before matching After matching
ET<3 G (n = 3672) GP (n = 302) P G(n = 290) GP (n = 290) P
 Clinical Pregnancy 2217 (60.4) 171 (56.6) 0.2 143 (49.3) 164 (56.6) 0.081
 OR (95% CI) Ref 1.3 (0.99–1.7) 0.06 Ref 1.35 (0.97–1.89) 0.076
 Multiple pregnancy 68 (3.1) 56 (32.7) < 0.001 8 (5.6) 52 (31.7) < 0.001
 OR (95% CI) Ref 17.66 (10.3–30.3) < 0.001 Ref 7.97 (3.6–17.63) < 0.001
 Miscarriage 276 (12.4) 24 (14) 0.547 21 (14.7) 23 (14) 0.869
 OR (95% CI) Ref 0.94 (0.56–1.58) 0.823 Ref 0.97 (0.51–1.83) 0.915
 Live birth 1919 (52.3) 146 (48.3) 0.19 120 (41.4) 140 (48.3) 0.095
 OR (95% CI) Ref 1.21 (0.92–1.58) 0.167 Ref 1.33 (0.96–1.85) 0.091
ET ≥ 3 G (n = 812) GP (n = 251) P G(n = 223) GP (n = 223) P
 Clinical Pregnancy 390 (48) 142 (56.6) 0.018 94 (42.2) 126 (56.5) 0.002
 OR (95% CI) Ref 1.7 (1.23–2.35) 0.001 Ref 1.79 (1.22–2.61) 0.003
 Multiple pregnancy 6 (1.5) 40 (28.2) < 0.001 2 (2.1) 34 (27) < 0.001
 OR (95% CI) Ref 24.39 (8.99–66.16) < 0.001 Ref 17.16 (4.05–72.78) < 0.001
 Miscarriage 70 (17.9) 23 (16.2) 0.638 14 (14.9) 20 (15.9) 0.842
 OR (95% CI) Ref 0.87 (0.49–1.55) 0.63 Ref 1.1 (0.52–2.33) 0.799
 Live birth 313 (38.5) 117 (46.6) 0.023 79 (35.4) 104 (46.6) 0.016
 OR (95% CI) Ref 1.58 (1.14–2.2) 0.006 Ref 1.6 (1.09–2.35) 0.017
  1. Data are presented as n (%). Comparisons were made using chi-square test or Fisher’s exact test as appropriate
  2. ORs were adjusted for variables presented in Table 1 using multivariate GEE model before matching
  3. ORs after matching were adjusted for propensity score
  4. OR Odds ratio