Table 2.

Proportion of MS patients cognitively impaired at the three assessment points, and their degree of cognitive impairment.

	Cognitively impaired?		Degree of cognitive impairment
Assessment point	NO	YES	Mild	Moderate	Severe
T0: Baseline (N = 322)	N = 213 (66.1%)	N = 109 (33.9%)	N = 35 (32.1%)	N = 28 (25.7%)	N = 46 (42.2%)
T1: After 1 year (N = 293)	N = 178 (60.8%)	N = 115 (39.2%)	N = 52 (45.2%)	N = 24 (20.9%)	N = 39 (33.9%)
T2: After 2 years (N = 230)	N = 154 (67.0%)	N = 76 (33.0%)	N = 25 (32.9%)	N = 19 (25.0%)	N = 32 (42.1%)