TABLE 2.

Frequency and Percentage of Treatment Patterns for Natalizumab Initiators with at Least 2 Years of Follow-up Data (N = 2,407)

		Nonpersistent in Year Post	Persistent in Year Post	Total
Nonpersistent in Year Prior
	n	1,451	132	1,583
	%	91.66	8.34	100.0
Persistent in Year Prior
	n	731	2,456	3,187
	%	22.94	77.06	100.0
Total
	n	2,182	2,588	4,770
	%	45.74	54.26	100.0

Note: n equals the number of year-to-year treatment patterns; % equals the percentage of total treatment patterns based on prior year.