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Table 5 Factor loadings identified using principal component analysis and the orthogonal VARIMAX rotation *

From: Complaints of the arm, neck and shoulder among computer office workers in Sudan: a prevalence study with validation of an Arabic risk factors questionnaire

Domain Abbreviated item description Factor1 Factor2
Work Station   Office
equipment
Computer position
  My desk at work has suitable height 0.54 0.22
  I have enough space to work at my office 0.51 0.42
  I have a file holder I use when I am typing 0.74 0.04
  My chair supports my lower back 0.57 0.30
  Keyboard is placed directly in front 0.42 0.69
  I sit straight in front of screen 0.03 0.68
Eigenvalue   1.72 1.42
% of Variance   21.5 17.9
Body Posture   Head and
body posture
Awkward body
posture
  I find my job physically exhausting 0.98 0.01
  When I work my hand is placed in a straight line 0.55 0.01
  When I work my head is bended 0.98 0.03
  When I work my head is twisted towards the left or right 0.98 -0.01
  When I work my body is twisted towards the left or right 0.98 -0.06
  I sit in a symmetrical position 0.97 -0.04
  I sit for long hours in one position -0.06 0.87
  For 2 hours per day I sit with lifted shoulders 0.05 0.88
  During my work I sit in an awkward posture 0.02 0.98
  My work requires performing repetitive tasks 0.07 0.92
Eigenvalue   7.10 1.55
% of Variance   24.0% 17.5%
Break Time   Autonomy Break quality
  I can divide my work tasks 0.67 0.47
  I find my work breaks sufficient 0.68 0.28
  I can decide when to take a break 0.77 0.08
  I can decide when to start and to stop 0.78 0.21
  I alternate in my body position 0.06 0.59
  I alternate in my job task 0.41 0.65
  I perform job tasks without a computer 0.53 0.59
  After 2 hours work I take a break for at least 10 minutes 0.31 0.51
  My breaks are spent outside the office 0.36 0.79
Eigenvalue   3.41 1.65
% of Variance   37.9% 18.4%
Job Control   Skill discretion Decision authority
  I participate with other colleges in decision making 0.75 0.64
  I participate in implementation of job tasks 0.75 0.64
  My work develops my abilities 0.72 0.67
  In my work I have the chance to learn new things 0.74 0.65
  I have to be creative in my work 0.73 0.66
  I undertake different tasks in my work 0.77 0.62
  I decide how to perform my job task 0.66 0.73
  I determine the time & speed job tasks 0.63 0.76
  I solve work problems by my self 0.64 0.75
Eigenvalue   8.83 0.06
% of Variance   48.7 12%
Job Demands   Time pressure Task complexity
  I find trouble to finish my job tasks 0.76 0.21
  I take regular over times 0.80 -0.02
  I have limited time to finish my job 0.74 0.13
  I work with max speed to finish my tasks -0.19 0.59
  I work under extensive work pressure 0.14 0.73
  I find my work tasks difficult 0.40 0.62
Eigenvalue   2.36 1.12
% of Variance   33.7 16.1
Social Support   Social support Work flow
  I find support from supervisors 0.92 0.33
  I receive positive comments 0.93 0.33
  My colleagues are helpful 0.81 0.26
  My supervisors are helpful 0.93 0.33
  I get personal advice from my colleagues 0.92 0.33
  My supervisors are considerate 0.81 0.25
  No contacts with other colleagues 0.92 0.32
  The work flow goes smoothly 0.47 0.80
  I can ask and enquire in my work 0.47 0.81
  My work tasks depend on other colleagues 0.18 0.90
  The work atmosphere is comfortable 0.18 0.90
  I find support from colleages 0.47 0.81
Eigenvalue   8.96 1.72
% of Variance   53.2% 35.8%
  1. Only items with a factor loading >0.5 on at least one factor are reported