Table 1. Mean ± SD for each variable used for cluster assignment in our osteoarthritis participants (n = 194)*.
| Measures | Cluster 1 (n = 54) |
Cluster 2 (n = 45) |
Cluster 3 (n = 63) |
Cluster 4 (n = 32) |
P |
|---|---|---|---|---|---|
| CSQ-R active | 3.0 ± 0.9 | 2.7 ± 1.0 | 3.1 ± 1.0 | 2.9 ± 1.0 | 0.297 |
| CSQ-R passive | 1.9 ± 1.2† | 2.5 ± 1.0‡ | 3.3 ± 1.3 | 3.7 ± 1.1 | 0.001§ |
| KRS-18 | 66.8 ± 7.5¶ | 85.3 ± 7.0‡ | 75.4 ± 7.8# | 91.5 ± 10.8 | 0.001§ |
| PVAQ | 30.7 ± 9.1† | 34.0 ± 8.9‡ | 54.9 ± 7.5# | 63.0 ± 8.4 | 0.001§ |
| CES-D | 6.4 ± 5.5** | 10.6 ± 7.6 | 9.3 ± 5.9 | 12.4 ± 10.2 | 0.001§ |
| PANAS positive | 39.2 ± 7.0†† | 35.0 ± 6.8‡ | 39.6 ± 7.3 | 39.1 ± 6.2 | 0.001§ |
| PANAS negative | 13.4 ± 4.2† | 15.8 ± 3.9 | 16.0 ± 6.9 | 16.2 ± 4.9 | 0.001§ |
| STAXI trait | 15.7 ± 2.2‡‡ | 16.3 ± 2.3 | 16.3 ± 2.9 | 18.1 ± 6.8 | 0.024§ |
| LOT-R | 19.1 ± 4.7§§ | 17.4 ± 4.2 | 16.4 ± 3.7 | 17.8 ± 4.1 | 0.001§ |
CSQ-R = Coping Strategies Questionnaire-Revised; KRS-18 = 18-item Kohn Reactivity Scale; PVAQ = Pain Vigilance and Awareness Questionnaire; CES-D = Center for Epidemiologic Studies Depression Scale; PANAS = Positive and Negative Affect Scale; STAXI = State-Trait Anger Expression Inventory; LOT-R = Life Orientation Test-Revised.
Significant group differences between cluster 1 and cluster 4 and between cluster 1 and cluster 3 (P < 0.01 with Bonferroni adjustment).
Significant group differences between cluster 2 and cluster 4 and between cluster 2 and cluster 3 (P < 0.01 with Bonferroni adjustment).
Significant.
Significant group differences between cluster 1 and cluster 4, between cluster 1 and cluster 3, and between cluster 1 and cluster 2 (P < 0.01 with Bonferroni adjustment).
Significant group differences between cluster 3 and cluster 4 (P < 0.01 with Bonferroni adjustment).
Significant group differences between cluster 1 and cluster 4 and between cluster 1 and cluster 2 (P < 0.01 with Bonferroni adjustment).
Significant group differences between cluster 1 and cluster 2 (P < 0.01 with Bonferroni adjustment).
Significant group differences between cluster 1 and cluster 4 (P < 0.01 with Bonferroni adjustment).
Significant group differences between cluster 1 and cluster 3 (P < 0.01 with Bonferroni adjustment).