. Author manuscript; available in PMC: 2019 Dec 1.

Published in final edited form as: Osteoarthritis Cartilage. 2018 Aug 18;26(12):1643–1650. doi: 10.1016/j.joca.2018.08.003

Table 4.

Variables included in at least 9 of the 10 cross-validated models for predicting pain progression in both knees

Stable vs. Improving	Worsening vs. Stable	Improving vs. Worsening
KOOS: Left knee pain while bending knee fully	20-meter Walk Test: Number of steps (longer time)	KOOS: Left knee pain while walking
KOOS: Either knee difficulty while kneeling	Right Knee X-ray: Evidence of knee medial joint space narrowing	WOMAC: Right knee aggregate pain score
Block Brief 2000: frequency of dairy (cheese)	Block Brief 2000: Frequency of beef steaks/roasts/pot roast/frozen dinners/sandwiches	KOOS: Left knee pain while in bed, last 7 days
	CES-D: How often sleep was restless