Table 2.

total incidence rates of all acute infections and serious infections per 1000 patients per year for each age category, between 1998–2002.

	Denominator	0–4 (95% CI)	5–9 (95% CI)	10–14 (95% CI)	Total incidence (95% CI)
Acute infections	Yearly contact group	1731.7 (1708 – 1754)	972.5 (970 – 975)	732.5 (725 – 738)	1106.6 (1097 – 1116)
	Practice population	1383.0 (1365 – 1401)	732.7 (727 – 739)	527.8 (521 – 533)	833.8 (830 – 836)
Serious infections	Yearly contact group	21.1 (17.9 – 22.9)	11.7 (9.8 – 13.2)	5.1 (4.0 – 6.3)	12.0 (10.9 – 12.9)
	Practice population	16.8 (14.3 – 18.3)	8.8 (7.4 – 10.0)	3.6 (2.9 – 4.5)	9.3 (8.2 – 9.7)