Table 3.

Drug exposure and duration of illness

	Treatment initiated
Duration of symptoms at the NPV	Before NPV	1-2 years after NPV	3 years after NPV	Never treated	Total
<2 years	37 (5.8)	49 (7.6)	5 (0.8)	18 (2.8)	109 (17.0)
2-3 years	98 (15.3)	112 (17.5)	10 (1.6)	33 (5.1)	253 (39.5)
4-5 years	79 (12.3)	80 (12.5)	2 (0.3)	13 (2.0)	174 (27.1)
≥6 years	59 (9.2)	34 (5.3)	1 (0.2)	11 (1.7)	105 (16.4)
Total	273 (42.6)	275 (42.9)	18 (2.8)	75 (11.7)	641 (100.0)

Values are presented as number (percentage). NPV, new patient visit.