Table 1. Sample of provinces, health facilities, health providers, and patients.

Sampling Profile	Year of Assessment
	2004	2005	2006	2007	2008
Provinces	28	28	28	28	28
Facilities	551	612	612	615	600
Patient observations: under 5 y	2,504	2,758	2,892	2,887	2,875
Patient observations: above 5 y	2,630	2,947	2,965	3,008	2,921
Total patient observations	5,134	5,705	5,857	5,895	5,796
Caretaker exit interviews of children under 5 y	2,458	2,755	2,892	2,887	2,875
Patient exit interviews: above 5 y	2,595	2,961	2,965	3,008	2,921
Total exit interviews	5,053	5,716	5,857	5,895	5,796
Health provider interviews	1,388	1,418	1,666	1,827	2,175