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Table 4 The GRADE evidence quality for functional outcomes

From: Intramedullary nailing versus plating for distal tibia fractures without articular involvement: a meta-analysis

Functional outcomes Number of studies Study design Mean difference [95 % CI] P P for heterogeneity Quality
Olerud and Molander Ankle Score 4 [14,16,21,25] Retrospective 0.01 [−0.02, 0.03] 0.56 0.09 Low
American Orthopaedic Foot and Ankle Surgery score 2 [27,28] Retrospective 4.10 [0.03, 8.17] 0.05 0.10 Low
Radiologic union 3 [10,33,38] RCT −0.53 [−2.39, 1.34] 0.58 <0.00001 Lowa,b
8 [14,16,20,22,24,25,29,32] Retrospective −0.98 [−3.61, 1.66] 0.47 <0.00001 Low
  1. aTotal number of events is less than 300
  2. b I 2 > 50 %