Table 1.

Description of sample from MOST and OAI in this study at the time of the long limb examinations (knees with KL 2 or greater or with a history of injury were excluded)

	MOST and OAI (N=2073 subjects, 3498 knees)*	MOST (1364 subjects, 2316 knees)	OAI 709 subjects, 1182 knees)
Age at baseline ± s.d.	61.2 (8.4)	61.0 (7.9)	61.7 (9.4)
Sex (% female)	1206 (58.2)	810 (59.4)	396 (55.9)
BMI (mean ± s.d.)	28.7 (4.9)	29.3 (5.0)	27.4 (4.6)
Percentage of knees with KL 0	2620 (74.9)	1791 (77.3)	829 (70.1)
with KL 1	878 (25.1)	525 (22.7)	353 (29.9)
Percentage of knees with all WOMAC pain with score of 0	1693 (48.8)	1013 (44.3)	680 (57.9)
Percentage of limbs with neutral alignment	1565 (45.1)	980 (42.6)	585 (50.0)