Table 2.

Logistic regression model results for the association between chronic knee pain and radiological features including KL grades, OARSI JSN grades for lateral and medial compartments, and the minimum medial JSW measurement.

Variable	Estimates (95% CI)
Chronic pain (%)	33.1
OARSI JSN grades medial	− 0.12 (− 0.33, 0.10)
OARSI JSN grades lateral	0.22 (0.02, 0.42)
Quantitative JSW	− 0.05 (− 0.15, 0.05)
KL grades	0.79 (0.64, 0.93)
Age	− 0.04 (− 0.05, − 0.03)
Female sex	0.13 (− 0.04, 0.31)
BMI	0.05 (0.03, 0.07)

In adjusted logistic regression analysis for ages, gender, and BMI, KL grades (OR 2.20; 95% CI 1.91, 2.52) and OARSI JSN grades for the lateral compartment (OR 1.24; 95% CI 1.02, 1.51) were statistically significantly associated with higher odds of chronic pain. The test sensitivity, specificity, and AUC respectively, of 0.80 (95% CI 0.77, 0.83), 0.55 (95% CI 0.50, 0.59), and 0.69 (95% CI 0.66, 0.71).

Bold p-values are significant (p-value < 0.05).