Table 7

Construct validity indicated by PRUNE scores to general health status subscales
PRUNE score (2-year)
SF- 36 subscale Pain SM symptoms Specific activities Usual activity Total score
76 76 75 75 76
SF36 - 2-Physical Functioning Subscale −0.5** −0.46** −0.39** −0.36** −0.52**
SF36 - 2 -Role -Physical Subscale −0.35** −0.41** −0.16 0.08 −0.25
SF36 - 2-Bodily Pain Subscale −0.59** −0.68** −0.53** −0.35** −0.64**
SF36- 2 -General Health Subscale −0.33* −0.34** −0.19 −0.25 −0.33*
SF36 - 2-Vitality Subscale −0.48** −0.37** −0.21 −0.12 −0.36**
SF36 - 2 -Social Functioning Subscale −0.60** −0.45** −0.31* −0.09 −0.45**
SF36 - 2 -Role- Emotional Subscale −0.39** −0.41** −0.30* −0.16 −0.38**
SF36 - 2 -Mental Health Subscale −0.34** −0.19 −0.20 −0.07 −0.25
SF36 - 2 -Physical Component Summary −0.58** −0.68** −0.42** −0.32* −0.59**
SF36 - 2 -Mental Component Summary −0.37** −0.23 −0.19 −0.004 −0.25

Pearson correlations between subscales, or the total score of the PRUNE, and the subscales of the SF-36 obtained at follow-up indicate that pain, sensory/motor (SM) symptoms and total scores were consistently moderately correlated with the SF-36 physical subscales or summary score. The sensory/motor symptoms subscale correlated most strongly with overall physical health status. The bolded scores in each column show where the stronger relationships existed. (Correlations who are significant at p<0.05 are noted as *, and those where p<0.01 are noted as **.)

MacDermid and Grewal

MacDermid and Grewal BMC Musculoskeletal Disorders 2013 14:146   doi:10.1186/1471-2474-14-146

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