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Table 1 Baseline characteristics of the sample (n = 181)

From: Mechanical wrist traction as a non-invasive treatment for carpal tunnel syndrome: a randomized controlled trial

  Total (n = 181) Intervention (n = 94) Care as usual (n = 87) p
Mean (SD) n (%) Mean (SD) n (%) Mean (SD) n (%) t X 2
Demographic features
 Age (in years) 58.1 (13.0)   59.0 (12.4)   57.2 (13.7)   .339  
 Sex         .454
  Male   59 (32.6)   33 (35.1)   26 (29.9)   
  Female   122 (67.4)   61 (64.9)   61 (70.1)   
 Educational level         .809
  Low   149 (82.3)   78 (83.0)   71 (81.6)   
  High   32 (17.7)   16 (17.0)   16 (18.4)   
 Marital status         .560
  With partner   138 (76.2)   70 (74.5)   68 (78.2)   
CTS-related
 Duration of complaints         .212
   < 3 years   136 (75.4)   67 (71.3)   69 (79.3)   
   > 3 years   45 (24.9)   27 (28.7)   18 (20.7)   
 Dominant hand involved?         .950
  No   35 (19.3)   19 (20.2)   16 (18.4)   
  Yes   53 (29.3)   27 (28.7)   26 (29.9)   
  Both hands   93 (51.4)   48 (51.1)   45 (51.7)   
 Direct relative with CTS   54 (29.8)   28 (29.8)   26 (29.9)   .989
 Paid hand labor?         .605
  No   113 (62.4)   57 (60.6)   56 (66.4)   
  Heavy   68 (37.6)   37 (39.4)   31 (35.6)   
 SSS score 2.86 (0.77)   2.89 (0.80)   2.82 (0.74)   .589  
 FSS score 2.34 (0.89)   2.39 (0.92)   2.28 (0.86)   .374  
 BCTQ score 2.64 (0.76)   2.68 (0.79)   2.59 (0.72)   .421  
Lifestyle habits
 Smoking   29 (16.0)   16 (17.0)   13 (14.9)   .703
 Alcohol   43 (23.8)   24 (25.5)   19 (21.8)   .560
 BMI 28.8 (5.08)   29.2 (5.24)   28.4 (4.89)   .296  
  1. BMI Body Mass Index, CTS carpal tunnel syndrome, BCTQ Boston Carpal Tunnel Questionnaire, FSS Functional Status Scale, SD standard deviation, SSS Symptom Severity Scale