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Table 6 Difference between women who had positive clinical pregnancy outcome in repeat IVF/ICSI cycle and women who did not regarding retrieved oocytes, fertilization rat, and embryos transferred

From: Role of routine hysteroscopy in previous failed ICSI: a continuous clinical dilemma

 Positive clinical pregnancy (n = 39)Negative clinical pregnancy (n = 61)MD/RR (95% CI)P
No. of retrieved oocytes    
 Range4–254–250.150.958a
 Median (IQR)12 (8–19)13 (7–20)(− 2.4 to 2.8)NS
Fertilization rate    
 Range0.5–0.860.5–0.830.010.583a
 Median (IQR)0.7 (0.53–0.79)0.69 (0.57 to 0.73)(− 0.05 to 0.04)NS
No. of embryos transferred    
 114 (35.9%)15 (24.6%)  
 211 (28.2%)26 (42.6%)1.09b0.293c
 314 (35.9%)20 (32.8%)(0.79 to 1.49)NS
  1. Data presented as range, mean ± SD; or range, median (IQR); or number (percentage). MD (95% CI) mean difference and its 95% confidence interval. RR (95% CI) risk ratio and its 95% confidence interval
  2. IVF in vitro fertilization, ICSI intracytoplasmic sperm injection, SD standard deviation, IQR interquartile range, NS non-significant
  3. aAnalysis using Mann-Whitney’s U test
  4. bRR for ET of 2/3 vs. 1 embryo(s)
  5. cAnalysis using chi-squared test