Table 6.
Test-retest Statistics of the Pain Catatstrophizing Scale in stable subjects (n = 34)
| |
Mean (S.D.) |
Mean (S.D.) |
ICC (95% CI) |
SEM |
MDC95 |
MDC% |
|---|---|---|---|---|---|---|
| test | retest | |||||
|
Total score (0–52) |
14.9 (9.8) |
14.2 (9.1) |
0.92 (0.84, 0.96) |
3.7 |
10.2 |
19.6 |
|
Rumination (0–16) |
5.4 (3.7) |
5.4 (3.9) |
0.79 (0.59, 0.90) |
2.2 |
6.2 |
38.8 |
|
Magnification (0–12) |
2.9 (2.5) |
2.4 (2.0) |
0.89 (0.78, 0.95) |
1.0 |
2.7 |
22.1 |
| Helplessness (0–24) | 6.5 (4.8) | 6.3 (4.3) | 0.91 (0.83, 0.96) | 1.8 | 5.1 | 21.1 |
ICC: Intraclass correlation coefficient; SEM: standard error of measurement. MDC: minimum detectable change.
SEMconsistency = √Within people Residual Mean square.
MDC95 = 1.96 × √2 × SEM.
MDC % = MDC as percentage of maximum sore.