From: The impact of depression among chronic low back pain patients in Japan
 | Spearman’s rho with PHQ-9 scorea | P value |
---|---|---|
Frequency of problems with pain | 0.236 | <0.001 |
Current severity of pain (based on NRS score) | 0.289 | <0.001 |
Severity of pain in the prior week (based on NRS score) | 0.332 | <0.001 |
Additional pain sites (number, 0–6) | 0.387 | <0.001 |
Presenteeism % | 0.340 | <0.001 |
Overall work impairment % | 0.342 | <0.001 |