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Table 4 Results of the disabilities of the arm, shoulder and hand (DASH) disability/symptoms scale shown as scores, effect size (ES) and standardized response mean (SRM)

From: The disabilities of the arm, shoulder and hand (DASH) outcome questionnaire: longitudinal construct validity and measuring self-rated health change after surgery

Population Preoperative* Postoperative* Change ES SRM
  mean (SD) median mean (SD) median mean (SD) median   
Total population (n = 109) 35 (22) 36 24 (23) 16 11 (17) 8 0.5 0.6
      15 (13) 12 0.7 1.2
Arthroscopic acromioplasty (n = 25) 43 (13) 45 32 (25) 24 11 (23) 6 0.9 0.5
Carpal tunnel release (n = 19) 41 (20) 40 28 (26) 15 13 (14) 10 0.7 1.0
Dropouts (n = 9) 24 (18) 28       
  1. *Higher score (0–100) indicates greater disability All changes in scores (improvement or worsening) calculated as having the same direction (to assess longitudinal validity of the DASH as opposed to assessing treatment effectiveness)