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Table 7 Spearman rank correlations between RAND-36/12 composite scores and related variables

From: Correlated physical and mental health composite scores for the RAND-36 and RAND-12 health surveys: can we keep them simple?

  Age Sex Body mass index Physical Activity Rheumatic disease Depression
RAND-36 PCS
unweighted
 − 0.21 0.06  − 0.21 0.27  − 0.26  − 0.21
RAND-36 PCS oblique  − 0.13 0.08  − 0.20 0.27  − 0.26  − 0.24
RAND-12 PCS unweighted  − 0.25 0.06  − 0.23 0.30  − 0.24  − 0.20
RAND-12 PCS oblique  − 0.12 0.10  − 0.19 0.29  − 0.23  − 0.25
RAND-36 MCS unweighted 0.11 0.10  − 0.07 0.20  − 0.14  − 0.33
RAND-36 MCS oblique 0.10 0.10  − 0.09 0.22  − 0.17  − 0.33
RAND-12 MCS unweighted 0.10 0.11  − 0.07 0.21  − 0.15  − 0.32
RAND-12 MCS oblique 0.09 0.11  − 0.09 0.23  − 0.17  − 0.32
  1. Age (years, continuous); sex (women = 0, men = 1), body mass index (units, continuous), physical activity (strenuous physical activity: never = 0, less than 1 h per week = 1, 1–2 h per week = 2, ≥ 3 h per week = 3), rheumatic disease (no = 0, yes = 1), depression (no = 0, yes = 1)