Table 2. Details of DHS data, contrasting numbers, and percent reported vaccinated by age as ascertained by vaccination cards, as reported by mothers, and from either source.

Country	Year	Number Surveyed	Vaccination Report Source	Age
				9–23 mo	24–35 mo	36–47 mo	48–60 mo
Ghana	2008	2,304	Card	529 (72%)	388 (76%)	307 (61%)	326 (58%)
			Mother	70 (10%)	89 (18%)	136 (27%)	185 (33%)
			Either	599 (82%)	477 (94%)	443 (88%)	511 (91%)
			Total surveyed	734	508	501	561
Madagascar	2008–2009	9,747	Card	1,147 (42%)	984 (41%)	845 (38%)	811 (33%)
			Mother	539 (20%)	815 (34%)	846 (38%)	1,037 (43%)
			Either	1,686 (62%)	1,799 (76%)	1,691 (75%)	1,848 (77%)
			Total surveyed	2,724	2,374	2,250	2,399
Sierra Leone	2008	3,966	Card	454 (35%)	322 (36%)	229 (25%)	211 (25%)
			Mother	272 (21%)	286 (32%)	393 (42%)	366 (43%)
			Either	726 (56%)	608 (68%)	622 (67%)	577 (68%)
			Total surveyed	1,302	895	925	844

In some cases a card was present, but the date of vaccination was not recorded.