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Table 1 Best and worse fitting items from the AS Work Instability Scale: Revalidation on First postal Questionnaire

From: Reducing work disability in Ankylosing Spondylitis – development of a work instability scale for AS

Item Location Residual Chi
I have got to watch how much I do certain things at work -0.548 -0.499 0.064 0.968
When I'm feeling tired all the time, works a grind 0.534 -0.479 0.595 0.743
When I'm in pain it affects my concentration -2.146 -0.070 4.521 0.104
My condition is worse when I get stressed at work 0.183 1.824 7.581 0.023
  1. * Bonferroni adjusted level 0.0025.