TABLE 4.

Risk of complications from varicella infection, Quebec, April 1994 to March 1996

Age group (years)	Population	Incidence cases/1000 person years	Cases/year	Cases with complication/two years	Cases with complication/10,000 cases
Birth to 4	470,642	105.1	49,464	319	32.2
5 to 9	453,444	80.5	36,502	109	14.9
10 to 14	475,360	17.5	8333	29	17.9
15 to 19	497,534	2.9	1447	9	31.1
20 or older	5,440,602	0.3	1795	104	289.7
Total	7,337,582	13.3	97,541	570	29.2