Table 1. Frequencies of subregions exhibiting cartilage loss according to WORMS baseline cartilage score and number of associated pathologies.

		Subregions exhibiting cartilage loss at 30 months follow-up
Cartilage status in subregion at baseline (WORMS grade)	Subregions with no associated pathology (%)	Subregions with one associated pathology (%)	Subregions with two associated pathologies (%)	Subregions with three associated pathologies (%)	All
0 and 1 n=9747	180 / 7286 (2.5)	99 / 1633 (6.1)	70 / 792 (8.8)	3 /36 (8.3)	352 / 9747 (3.6)
2 n=476	66 / 292 (22.6)	35 / 121 (28.9)	31 / 58 (53.5)	1 / 5 (20.0)	133 / 476 (27.9)
2.5 n=173	11 / 103 (10.7)	12 / 42 (28.6)	9 / 22 (40.9)	2 / 6 (33.3)	34 / 173 (2.0)
3 n=427	106 / 753 (14.1)	93 / 472 (19.7)	167 / 604 (27.7)	61 / 154 (39.6)	427 / 1983 (21.5)
4 n=49	1 / 9 (11.1)	3 / 10 (30.0)	3 / 22 (13.6)	4 / 8 (50.0)	11 / 49 (22.4)
5 and 6 n=1096	11 /148 (7.4)	26 / 185 (14.1)	58 / 363 (16.0)	67 / 400 (16.8)	162 / 1096 (14.8)
All grades	375 / 8591 (4.4)	268 / 2463 (10.9)	338 /1861 (18.2)	138 / 609 (22.7)	1119 / 13524 (8.3)