Table 2. Characteristics of the patient population (data from 10 of 12 clinics*).

	Control		Intervention		Total
Age group (n = 34 501)
0 to 3 years	7644	43%	7236	44%	14 880
3 to 6 years	2522	14%	2522	15%	5044
6 to 9 years	1537	9%	1389	8%	2926
9 to 12 years	1585	9%	1414	9%	2999
12 to 15 years	2047	11%	1708	10%	3755
15 to 18 years	2553	14%	2344	14%	4897
Total	17 888	100%	16 613	100%	34 501
Sex (n = 34 467)
Male	9066	51%	8424	51%	17 490
Female	8814	49%	8163	49%	16 977
Total	17 880	100%	16 587	100%	34 467

* Data from two centers were only available in an aggregated form which is unsuitable for breakdown in tabular format