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Table 1 General characteristics of the subjects (n = 166)

From: Risk factors of work-related upper extremity musculoskeletal disorders in male cameramen

   Total Symptom high risk group Symptom low risk group
  Group Number (%) Mean (SD) Number (%) Mean (SD) Number (%) Mean (SD)
Age (year)    46.2(7.7)   47.6(8.4)   45.9(7.5)
BMI (kg/m 2 )    24.1(2.4)   24.8(2.4)   23.9(2.4)
Tenure (month)    202.8(116.0)   233(122.5)   194(113.4)
Working hours (hour)    9.4(5.5)   10.2(2.7)   9.2(2.4)
Break time (minute)    42.0(32.4)   36.3(39.7)   43.5(30.2)
Marital status Yes 154(92.8)   31(91.2)   123(93.2)  
  No 10(6.0)   3(8.8)   7(5.3)  
Exercise Yes* 69(41.6)   6(17.6)   63(48.1)  
  No 96(57.8)   28(82.4)   68(51.9)  
House work (hour) ≥1 hour 29(17.5)   30(88.2)   104(78.8)  
  < 1 hour 134(80.7)   3(8.8)   26(19.7)  
Physical burden N to M 75(45.2)   10(29.4)   65(49.2)  
  Hard 70(42.2)   13(38.2)   57(43.2)  
  Very hard 21(12.7)   11(32.4)   10(7.6)  
Ergonomics § High risk 75(45.2)   24(70.6)   51(43.2)  
  Low risk 77(46.4)   10(29.4)   67(56.8)  
Symptoms High risk 34(20.5)      
  Low risk 132(79.5)      
  1. * Exercise Yes: >3 times/week, >40 minutes/one time.
  2. Physical burden: level of physical fatigue when working.
  3. None to moderate.
  4. §Ergonomics: check list from OSHA Draft Ergonomics Standard, a score of 10 or above is high risk group.
  5. Symptoms: experience of any pain or discomfort during past 1 year. Any pain continued longer than 1 week or occurred more than 1 time during 1 month are classified into high risk groups.