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Table 3 Construct validity Spearman's correlation coefficient (rs) determined when comparing RAOS five dimensions to the SF-36 eight different subscales, HAQ and four subscales of AIMS2. Significant correlations, p < 0.05 in bold figures, all correlations over 0.32 were significant at p < 0.01, n = 115–119.

From: Validation of the Rheumatoid and Arthritis Outcome Score (RAOS) for the lower extremity

  Reumatoid and Arthritis Outcome Score (RAOS)
  Pain Symptoms ADL Sport/Rec QOL
SF-36
Physical Function 0.56 0.47 0.65 0.63 0.53
Role Physical 0.31 0.18 0.38 0.18 0.26
Bodily Pain 0.57 0.34 0.56 0.21 0.46
General Health 0.35 0.27 0.35 0.20 0.33
Vitality 0.36 0.32 0.37 0.20 0.26
Social Functioning 0.34 0.21 0.37 0.12 0.27
Role Emotional 0.23 0.18 0.23 0.15 0.18
Mental Health 0.26 0.16 0.24 0.00 0.12
HAQ -0.51 -0.38 -0.72 -0.64 -0.51
AIMS2
Walking and Bending -0.54 -0.47 -0.63 -0.48 -0.50
Arm Function -0.38 -0.37 -0.46 -0.36 -0.36
Arthritis Pain -0.50 -0.35 -0.45 -0.11 -0.42
Level of Tension -0.23 -0.19 -0.17 -0.02 -0.15
  1. Footnote: Negative correlations due to reversed scales for the HAQ and the AIMS2 (0 best) vs. RAOS and SF-36 (100 best).