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Table 1 Factor structure (German version) at T0 vs. factor structure in a Dutch sample reported by Abma et al. [5]

From: Evaluation of measurement properties of the German Work Role Functioning Questionnaire

Factor no.
(German sample)
Item Item no. FAC1 FAC2 FAC3 FAC4 Factor (Dutch sample) a)
Factor 1 Use hand-held tools or equipment b) 15 0.557   0.434   F3
  Keep your mind on your work 16 0.618    0.536 F2
  Do work carefully 17 0.691     F2
  Concentrate on your work 18 0.654    0.558 F2
  Easily read or use your eyes when working 20 0.656     F2
  Speak with people in-person, in meetings or on the phone 21 0.648     F2
  Control your temper around people when working 22 0.511     F2
  Set priorities in my work 23 0.725     F4
  Handle changes in my work 24 0.685     F4
  Process incoming information, for example e-mails, in time 25 0.693     F4
  Perform multiple tasks at the same time 26 0.675     F4
  Be proactive, show initiative in my work 27 0.615     
Factor 2 Start on your job as soon as you arrived at work 2   0.625   0.449 F1
  Stick to a routine or schedule 4   0.779    F1
  Work fast enough 5   0.793    F1
  Finish work on time 6   0.846    F1
  Do your work without making mistakes 7   0.758    F1
Factor 3 Feel you have done what you are capable of doing 10    0.404   F1
  Lift, carry, or move objects at work weighing more than 10 pounds 11    0.689   F3
  Sit, stand, or stay in one position for longer than 15 min while working 12    0.734   F3
  Repeat the same motions over and over again while working 13    0.771   F3
  Bend, twist, or reach while working 14    0.676   F3
Factor 4 Get going easily at the beginning of the workday 1     0.602 F1
  Do your work without stopping to take extra breaks or rests 3   0.475   0.488 F1
  Feel a sense of accomplishment in your work 9     0.565 F1
  Work without losing your train of thought 19 0.538    0.591 F2
Satisfy the people who judge your work 8      F1
  1. Abbreviation: FAC Factor loading at factors 1 to 4
  2. a Abma et al. [5]; factors F1 = Work scheduling and output demands, F2 = Mental and social demands, F3 = Physical demands, F4 = Flexibility demands
  3. b For example, a phone, pen, keyboard, computer mouse, drill, hairdryer or sander
  4. Comment: Factor loading ≤ .4 not shown. Methods: Extraction method = principal component analysis; rotation method = varimax with Kaiser normalization. Total variance explained = 59.1%