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Table 2 Summary estimates of outcome variables in the current study

From: Open versus endoscopic carpal tunnel release: a systematic review and meta-analysis of randomized controlled trials

OutcomeNo. of studiesHeterogeneity I2a (%)Pooled odds ratiobMean differencec95% confidence interval (lower bound)95% confidence interval (upper bound)
Operative time499NA−5.81−17.856.23
Grip strength20NA1.99−0.434.42
BCTQ-S score392NA0.15−0.040.35
BCTQ-F score391NA0.17−0.020.36
SW monofilament test score20NA0.06−0.090.21
2PD test score335NA−0.16−0.450.12
Satisfaction rate20NA3.131.434.82
Key pinch strength20NA0.790.271.32
Return to work498NA−7.25−14.31−0.19
Complications25161.06NA0.691.64
Transient nerve injury2504.87NA1.3717.25
Permanent nerve injury25291.93NA0.586.4
Scar-related complications2500.2NA0.070.59
Hematoma2501.60NA0.367.16
Wound infection2500.53NA0.151.97
Superficial palmar arch injury25NA3.07NA0.1276.48
Persistent symptoms2502.17NA0.855.55
Pillar pain25350.95NA0.322.82
Reflex sympathetic dystrophy2500.40NA0.101.65
Tendon injury25NA0.26NA0.016.50
  1. 2PD Two-point Discrimination, BCTQ-F Boston Carpal Tunnel Questionnaire Functional Status Scale, BCTQ-S Boston Carpal Tunnel Questionnaire Symptom Severity Scale, ECTR endoscopic carpal tunnel release, NA not applicable, OCTR open carpal tunnel release, SW Semmes-Weinstein
  2. aHeterogeneity test: I2 > 50%, random-effects analysis model; I2 < 50%, fixed-effects analysis model
  3. bIf odds ratio > 1, favors ECTR; if odds ratio < 1, favors OCTR
  4. cIf mean difference > 0, favors ECTR; if mean difference < 0, favors OCTR
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