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Table 3 The dysfunction index and the bother index score for the patients by age, gender, Body Mass Index, injury location and operation status

From: Reliability and validity of the Chinese version of the Short Musculoskeletal Function Assessment questionnaire in patients with skeletal muscle injury of the upper or lower extremities

  Dysfunction index P value Bother index P value
Mean (SD) Mean (SD)
Age groups     
 18-29 (n = 66) 16.24 (15.78) <0.001 18.62 (16.22) 0.008
 30-44 (n = 87) 20.44 (16.27)   22.46 (18.55)  
 45-59 (n = 96) 20.41 (15.17)   22.81 (18.62)  
  ≥ 60 (n = 79) 27.86 (15.57)   28.74 (18.14)  
Gender     
 Male (n = 176) 19.18 (16.38) 0.008 20.70 (17.62) 0.005
 Female (n = 152) 23.92 (15.48)   26.32 (18.60)  
BMI groups     
 Low weight (n = 19) 23.80 (20.82) 0.856 28.18 (19.31) 0.294
 Normal (n = 218) 21.01 (15.85)   23.76 (18.42)  
 Overweight (n = 57) 21.54 (16.13)   21.24 (16.84)  
 Obesity (n = 31) 19.85 (14.01)   19.29 (17.99)  
Injury locationa     
 Upper-extremity (n = 76) 14.26 (12.47) <0.001 18.89 (16.06) 0.016
 Lower-extremityb (n = 252) 23.52 (16.49)   24.64 (18.71)  
Operation status     
 Yes (n = 149) 17.36 (15.95) <0.001 19.00 (17.98) <0.001
 No (n = 179) 24.72 (15.52)   26.89 (17.77)  
  1. Numbers in bold represent P-values which are significant at level 0.05
  2. aPatients with multiple injuries were excluded (n = 11)
  3. bLower-extremity included upper leg/hip/ pelvis, lower leg/knee, and ankle/foot