Table 1.

Sample distribution.

City and location		Total primary health care units	Selected primary health care units	Patient interview calculation
Iranduba
	Rural	5	1	26
	Urban	15	3	78
Itacoatiara
	Rural	9	2	146
	Urban	7	1	73
Itapiranga
	Urban	5	1	20
Manacapuru
	Rural	9	2	84
	Urban	12	3	126
Novo Airão
	Rural	5	1	21
	Urban	5	1	21
Presidente Figueiredo
	Rural	14	3	47
	Urban	9	2	31
Rio Preto da Eva
	Rural	10	2	48
	Urban	5	1	24
Silves
	Rural	8	1	20
	Urban	2	0	0
Alvarães
	Rural	3	1	18
	Urban	4	2	16
Coari
	Urban	15	7	156
Total		142	34	955