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Table 3 Results of publication bias testing

From: Percutaneous nephrolithotomy versus flexible ureteroscopic lithotripsy in the treatment of upper urinary tract stones: a meta-analysis comparing clinical efficacy and safety

Study project Included study Begg testing Egger testing 95% CI
z P t P
Stone free rate 19 1.19 0.234 1.21 0.244 −0.750, 2.750
Operative time 14 0.11 0.913 1.51 0.156 −2.887, 16.001
Decline of Hb 7 1.5 0.133 −2.13 0.101 −5.691, 0.756
Blood transfusion 6 0.24 0.806 0.84 0.463 −1.288, 2.208
Bleeding/hematuria 9 0.73 0.466 1.36 0.216 −0.934, 2.204
Fever/infection 12 0.89 0.373 −1.22 0.251 −2.639, 0.774
Perforation 6 0.38 0.707 −0.6 0.578 −8.271, 5.314
Requiring drug analgesia 5 0.24 0.806 0.56 0.615 −5.318, 7.599