Table 3.

Average scores of the OKS in patients after being clustered according to the terciles obtained from the WOMAC and EQ-5D-5 L questionnaires

	OKS score for the lower tercile of the questionnaire distribution (CI 95%)	OKS score for the middle tercile of the questionnaire distribution (CI 95%)	OKS score for the top tercile of the questionnaire distribution (CI 95%)
WOMAC pain	31.4 (30.0–32.7)	20.5 (19.5–21.6)	13.8 (12.7–14.9)
WOMAC rigidity	29.7 (28.2–31.3)	22.1 (20.8–23.4)	14.4 (13.3–15.4)
WOMAC impairment	32.0 (30.8–33.3)	20.1 (19.1–21.0)	13.1 (12.1–14.0)
EQ-5D-5 L utility	13.6 (12.5–14.6)	21.1 (20.0–22.2)	31.1 (29.7–32.4)
EQ-5D-5 L VAS	15.7 (14.0–17.3)	21.5 (20.3–22.7)	27.1 (25.3–28.9)

OKS Oxford Knee Score

WOMAC Western Ontario and McMaster Universities Osteoarthritis Index

VAS Visual Analogue Scale