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Table 3 Stepwise regression a of baseline scores for the MHAQ, NRS fatigue, NRS pain and SF-36 on baseline scores for the RD-IPQ and other variables (n= 118)

From: Illness perceptions in patients receiving rheumatology rehabilitation: association with health and outcomes at 12 months

Dependent vbl Independent vbls Regression coefficient Standard error t Significance level R2b
MHAQc RD-IPQd 0.007 0.002 3.73 .000 0.241
  SF-36 role physical −0.005 0.001 −4.12 .000 0.318
  Male 0.207 0.078 2.63 .010 0.357
  (Constant) 0.253 0.154 1.64 .104  
NRS e fatigue SF-36 social function −0.030 0.008 −3.88 .000 0.175
  NRS pain 0.439 0.102 4.28 .000 0.252
  Inflamm disease 1.249 0.386 3.23 .002 0.315
  (Constant) 5.464 0.898 6.09 .000  
NRS pain SF-36 role-physical −0.027 0.007 −4.22 .000 0.325
  RD-IPQ 0.052 0.012 4.44 .000 0.435
  NRS fatigue 0.202 0.061 3.29 .001 0.463
  SF-36 mental health 0.022 0.008 2.62 .010 0.486
  Inflamm disease −0.733 0.283 −2.59 .011 0.515
  (Constant) 1.199 1.222 0.98 .329  
SF-36f role-physical NRS pain −3.983 0.862 −4.62 .000 0.325
  MHAQ −18.928 4.807 −3.94 .000 0.410
  SF-36 social function 0.214 0.073 2.92 .004 0.471
  Male 13.968 4.546 3.07 .003 0.496
  SF-36 role-emotional 0.228 0.067 3.39 .001 0.521
  Higher education −7.430 3.017 −2.46 .015 0.544
  SF-36 mental health −0.233 0.113 −2.06 .042 0.561
  (Constant) 65.055 8.69 7.49 .001  
SF-36 social function SF-36 mental health 0.593 0.098 6.06 .000 0.305
  SF-36 role-physical 0.312 0.078 3.98 .000 0.416
  NRS fatigue −2.541 0.768 −3.31 .001 0.466
  Age 0.385 0.172 2.25 .027 0.489
  (Constant) 0.525 13.858 0.04 .970  
SF-36 role-emotional SF-36 mental health 0.846 0.111 7. 60 .000 0.389
  SF-36 role-physical 0.393 0.088 4.48 .000 0.478
  No. yrs diagnosed −0.545 0.261 −2.09 .039 0.497
  (Constant) −1.24 8.493 −0.15 .885  
SF-36 mental health SF-36 role-emotional 0.260 0.046 5.63 .000 0.389
  SF-36 social function 0.216 0.054 3.99 .000 0.490
  RD-IPQ −0.389 0.108 −3.62 .000 0.516
  NRS pain 2.132 0.719 2.96 .004 0.551
  (Constant) 48.990 8.773 5.58 .000  
  1. a Variables are listed in the order in which they entered the equations and the results.
  2. b Proportion of variation that these variables account for in dependent variable scores.
  3. c MHAQ is scored from 0–3; 3 is the greatest overall disability.
  4. d RD-IPQ is scored from 0 to 100 where 100 is worst possible illness perceptions.
  5. e NRS scales are scored from 0–10; 0 is no pain and fatigue,10 is the worst pain and fatigue.
  6. f SF-36 scales are scored from 0 to100 where 100 is the best possible health.