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Table 3 Outcomes of group G and group GP stratified by 35 years of age 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
Age < 35 G (n = 3799) GP (n = 452) P G(n = 419) GP (n = 419) P
 Clinical Pregnancy 2296 (60.4) 259 (57.3) 0.198 210 (50.1) 243 (58) 0.022
 OR (95% CI) Ref 1.35 (1.08–1.7) 0.009 Ref 1.38 (1.05–1.82) 0.02
 Multiple pregnancy 69 (3) 84 (32.4) < 0.001 4 (1.9) 77 (31.7) < 0.001
 OR (95% CI) Ref 17.88 (11.36–28.15) < 0.001 Ref 23.81 (8.54–66.43) < 0.001
 Miscarriage 267 (11.6) 38 (14.7) 0.152 23 (11) 36 (14.8) 0.223
 OR (95% CI) Ref 1.22 (0.81–1.84) 0.351 Ref 1.42 (0.81–2.48) 0.219
 Live birth 2006 (52.8) 218 (48.2) 0.066 184 (43.9) 204 (48.7) 0.166
 OR (95% CI) Ref 1.21 (0.97–1.51) 0.098 Ref 1.22 (0.93–1.59) 0.159
Age ≥ 35 G (n = 685) GP (n = 101) P G(n = 81) GP (n = 81) P
 Clinical Pregnancy 311 (45.4) 54 (53.5) 0.129 31 (38.3) 46 (56.8) 0.018
 OR (95% CI) Ref 1.93 (1.21–3.08) 0.006 Ref 2.17 (1.15–4.1) 0.017
 Multiple pregnancy 5 (1.6) 12 (22.2) < 0.001 1 (3.2) 12 (26.1) 0.009
 OR (95% CI) Ref 10.87 (1.4–84.62) 0.023
 Miscarriage 79 (25.4) 9 (16.7) 0.166 9 (29) 7 (15.2) 0.143
 OR (95% CI) Ref 0.37 (0.16–0.88) 0.024 Ref 0.45 (0.15–1.37) 0.159
 Live birth 226 (33) 45 (44.6) 0.022 22 (27.2) 39 (48.1) 0.006
 OR (95% CI) Ref 2.71 (1.63–4.5) < 0.001 Ref 2.56 (1.3–5.03) 0.006
  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