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Table 3 Meta-regression analyses of the effects of each covariate on fetal loss and preterm delivery

From: Laparoscopic appendectomy versus open appendectomy for suspected appendicitis during pregnancy: a systematic review and updated meta-analysis

  Fetal loss Preterm delivery
Covariates Number of studies Point estimate 95% CI P value Number of studies Point estimate 95% CI P value
Publication year 21 −0.045 (−0.130–0.040) 0.304 16 −0.055 (−0.153–0.043) 0.271
Mean age 16 −0.008 (−0.322–0.305) 0.957 13 0.013 (−0.188–0.214) 0.902
Mean GA 15 0.007 (−0.140–0.153) 0.93 13 −0.028 (−0.142–0.086) 0.633
Proportion of 1st 9 −0.02 (−0.102–0.062) 0.635 8 0.001 (−0.050–0.052) 0.97
Proportion of 2nd 9 0.003 (−0.080–0.060) 0.952 8 0.004 (−0.040–0.048) 0.849
Proportion of 3rd 9 0.012 (−0.054–0.347) 0.729 8 −0.005 (−0.042–0.033) 0.8
Proportion of CA 10 0.055 (−0.015–0.124) 0.123 7 −0.002 (−0.095–0.091) 0.969
Proportion of NA 13 0.009 (−0.057–0.281) 0.778 9 0.032 (−0.062–0.126) 0.499
  1. CI confidence interval; GA gestational age, CA complicated appendicitis, NA negative appendicitis