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Table 2 Detail characteristic of included studies

From: Comparison of lateral entry and crossed entry pinning for pediatric supracondylar humeral fractures: a meta-analysis of randomized controlled trials

Analysis item Studies Patients Heterogeneity Statistical method Effect estimate P value
I2 p
Radiographic outcomes
 Carrying angle 2 182 0% 0.95 MD (IV, random, 95% CI) −0.08 (−0.90, 0.73) 0.85
 Loss of carrying angle 4 297 0% 0.97 MD (IV, fixed, 95% CI) −0.17 (−0.72, 0.38) 0.55
 Baumann angle 2 182 0% 0.63 MD (M-H, fixed, 95% CI) 1.10 (−0.20, 2.40) 0.10
 Change of Baumann angle 5 349 0% 0.86 MD (IV, random, 95% CI) 0.14 (−0.27, 0.54) 0.51
Functional outcomes
 Criteria of Flynn, excellent 7 792 0% 0.81 RR (IV, random, 95% CI) 1.05 (0.97, 1.14) 0.34
 Criteria of Flynn, good 6 592 0% 0.92 RR (IV, random, 95% CI) 0.92 (0.60, 1.41) 0.71
 Full return to function 2 112 0% 0.48 RR (M-H, fixed, 95% CI) 1.00 (0.91, 1.09) 0.96
 Loss of elbow flexion 3 337 0% 0.91 MD (IV, random, 95% CI) −0.18 (−1.65, 1.29) 0.81
 Loss of elbow extension 3 335 0% 0.91 MD (IV, random, 95% CI) −0.04 (−0.01, 0.09) 0.12
Complications
 Pin tract infection 4 337 0% 0.66 RR (M-H, fixed, 95% CI) 0.89 (0.37, 2.14) 0.80
 Superficial infection 4 337 0% 0.58 RR (M-H, fixed, 95% CI) 0.87 (0.31, 2.44) 0.80
 Reoperation 2 112 NA NA RR (M-H, fixed, 95% CI) 6.56 (0.35, 121.80) 0.21
  1. Mild or major displacement (change of the Baumann angle) based on the criteria of Skaggs et al. [49]; excellent grading of criteria of Flynn et al. [13]
  2. MD mean difference, RR risk ratio, IV inverse variance, M-H Mantel-Haenszel, fixed fixed effect, random random effect, CI confidence interval