Skip to main content

Table 3 Correlations between depression, pain, and work impairment among CLBP patients

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

  1. aCorrelation is significant at the 0.01 level (2-tailed)
  2. CLBP chronic low back pain, NRS numeric rating scale, PHQ-9 Patient Health Questionnaire