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Table 3 Multivariate logistic regression model of factors associated with ET for the prediction of life birth

From: Predictive value of the time interval between embryo loading and transfer for IVF/ICSI success: a prospective cohort study

  Life birth No life birth Univariate analysis Multivariate analysis
  (n = 98) (n = 312) OR 95 % CI LR test OR 95 % CI LR test
Age (years)a 30.2 ± 5.1 32.2 ± 5.2 0.93 (0.89;0.97) 0.002 0.93 (0.88;0.98) 0.011
BMI (mg/m2)a 24.2 ± 5.0 24.7 ± 5.7 0.99 (0.94;1.03) 0.561 - - -
Catheter typeb 64 (65.3) 274 (87.8) 0.48 (0.27;0.85) 0.011 0.41 (0.22;0.79) 0.008
Time interval between oocyte retrieval and ET (days)a 3.5 ± 1.1 3.1 ± 1.3 1.28 (1.10;1.54) 0.009 1.17 (0.94;1.47) 0.126
Substance used for ovulation induction hCGb 74 (75.5) 252 (80.8) Reference Reference 0.424 - - -
Synthetic GnRHb 3 (2.7) 13 (4.4) 0.58 (0.13;2.64) - -
Choriogonadotropin alphab 21 (21.4) 47 (15.1) 1.38 (0.75;2.54) - -
ELT (seconds)a 42.6 ± 20.6 40.2 ± 18.3 1.01 (0.99;1.02) 0.343 - - -
TIEL-ET (seconds)a 54.2 ± 23.0 57.8 ± 24.3 1.00 (0.99; 1.00) 0.506 - - -
Uterine position Antevertedb 82 (83.7) 273 (87.5) Reference Reference 0.391 - - -
Midposedb 13 (13.3) 27 (8.7) 1.52 (0.69;3.34) - -
Retrovertedb 1 (1.0) 12 (3.8) 0.40 (0.053.26) - -
Uterine angle (Corpus–Cervix) Normalb 68 (69.4) 187 (59.9) Reference Reference 0.259 - - -
Pointedb 23 (23.5) 58 (18.6) 1.28 (0.68;2.41) - -
Very pointedb 7 (7.1) 67 (21.5) 0.55 (0.22;1.37) - -
Uterine length (mm)a 85.3 ± 12.6 80.8 ± 40.7 1.02 (1.01;1.05) 0.020 1.03 (1.01;1.06) 0.007
Endometrial thickness (mm)a 12.2 ± 3.6 11.7 ± 2.7 1.01 (0.97;1.04) 0.602 - - -
Endometrial length (mm)a 29.2 ± 7.7 28.6 ± 7.6 1.06 (0.99;1.13) 0.640 - - -
  1. ET embryo transfer, OR odds ratio, CI confidence interval, LR test likelihood ratio test, hCG human chorion gonadotropin, GnRH gonadotropin releasing hormone, ELT embryo loading time, TIEL-ET time interval between embryo loading and ET
  2. Data are provided as amean ± standard deviation or b n (%)