Table 4

Association between severity of chronic knee pain NRS and severity of depressive symptoms

Chronic knee pain NRSDepressive symptoms
None (0–4)Mild (5–9)Moderate (10–14)Moderately severe (15–19)Severe (20–27)P value
NRS (0–4) (%)1872 (82.4)272 (12)77 (3.4)38 (1.7)13 (0.6)<0.0001
NRS (5–7) (%)136 (58.1)63 (26.9)25 (10.7)8 (3.4)2 (0.9)
NRS (8–10) (%)65 (46.8)37 (26.6)14 (10.1)15 (10.8)8 (5.8)
  • The Rao-Scott χ2 test was performed to compare severity of depressive symptoms according to chronic knee pain NRS. Individuals without knee pain were regarded as NRS 0.

  • NRS, Numerical Rating Scale.