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Table 3 Testing the need of univariate frailty in the model of time to recovery from obstetric fistula patients at Gondar university teaching and referral hospital (January, 2010–March, 2017)

From: Time to recovery from obstetric fistula and determinants in Gondar university teaching and referral hospital, northwest Ethiopia

Parameters for baseline distribution and frailty Value 95% CI
P 3.18 2.80 3.62
Theta 0.53 0.32 0.87
LR test of theta = 0: chibar2 = 30.03 (Prob. > = chibar2) < 0.001
  1. LR Likelihood Ratio; P = shape parameter for Weibull Distribution; Theta = variance of frailty term