Table 8. Comparisons between clinical variables grouped based on the CSI-9 severity.
| Subclinical1 0–9 N = 223 |
Mild2 10–19 N = 240 |
Moderate/Severe3 20–36 N = 42 |
ANOVA or Chi-squared P-value | Effect size | |
|---|---|---|---|---|---|
| Age | 52.8 (15.6) | 53.1 (14.6) | 46.4 (13.6) | 0.02 | 0.15 |
| Female (%) | 129 (57.8) * | 174 (72.5) † | 30 (71.4) | 0.003 | 0.14 |
| Pain duration (weeks) | 15.2 (35.1) 3 | 24.4 (56.8) | 51 (118.3) 1 | 0.001 | 0.16 |
| Pain intensity | 2.3 (1.4) 2,3 | 3.3 (1.7) 1,3 | 4.4 (1.9) 1,2 | < 0.001 | 0.40 |
| Pain interference | 1.6 (1.5) 2,3 | 2.9 (2.1) 1,3 | 4.8 (2.4) 1,2 | < 0.001 | 0.49 |
| EQ-5D | 0.74 (0.11) 2,3 | 0.70 (0.11) 1,3 | 0.60 (0.11) 1,2 | < 0.001 | 0.35 |
Post-hoc differences between severity-level groups are indicated via superscript number.
* Male > Female
†Female > Male
Standard deviations or percentage female in parentheses