Table 2 Distribution of cortisol levels by pain group
Cortisol measures (nmol/l) | Controls (N = 50) | At risk (N = 251) | CWP (N = 124) | |||
|---|---|---|---|---|---|---|
| Â | Median | IQR | Median | IQR | Median | IQR |
Saliva | Â | Â | Â | Â | Â | Â |
   Morning (nmol/l) | 5 | 3–7 | 5 | 3–8 | 4 | 2–7 |
   Evening (nmol/l) | 1 | 0.5–1 | 0.5 | 0.5–1 | 0.5 | 0.5–1 |
Serum | Â | Â | Â | Â | Â | Â |
   Post-physical exam (nmol/l) | 295 | 229–362 | 310 | 215–387 | 331 | 240–410 |
   Post-suppression test (nmol/l) | 249 | 154–313 | 232 | 133–368 | 253 | 144–388 |