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Table 2 Cluster characteristicsa

From: Subgroups of older adults with osteoarthritis based upon differing comorbid symptom presentations and potential underlying pain mechanisms

Variable Cluster 1 (n= 45) Cluster 2 (n= 38) Cluster 3 (n= 42)
CES-D-depression 17.3 (7.1) 9.9 (5.0) 5.0 (3.4)
BFI-fatigue 6.2 (1.4) 4.0 (1.5) 3.0 (1.4)
PSQI 10.6 (3.6) 5.5 (2.1) 7.2 (2.9)
Average pain severity 3.9 (1.6) 2.3 (1.0) 2.9 (1.7)
No. of symptoms - Illness burden 12.2 (2.7) 10.4 (2.9) 5.3 (3.6)
  1. aValues are the mean (SD). Multivariate ANOVA confirmed that each variable was differentiated by the cluster solution (Wilks' λ = .148, F(10,236) = 37.69, P < .0001) and univariate ANOVAs confirmed that each variable significantly differentiated the clusters (all P < .0001).