Table 1. Summary of household data and crowding by country.

	Number of individuals recruited to study	Number of households recruited	Geometric mean of residents per household§	Geometric mean of people per room (95% CI)
Chad	2049	764	5.08	2.19 (2.09–2.30)
Ethiopia	1887	783	4.55	2.78 (2.66–2.91)
Ghana	1175	419	4.92	1.83 (1.73–1.94)
Mali	4662	1619	10.86	2.10 (2.05–2.16)
Niger	4642	1428	5.49	2.13 (2.07–2.19)
Nigeria	1758	653	6.22	2.31 (2.19–2.43)
Senegal	1632	566	9.14	1.87 (1.80–1.94)
Total	17805	6232	6.68	2.17 (2.14–2.21)

^§The geometric mean of residents per household is based on the number of individuals resident in the study households, and not the individuals recruited to the study shown in the second column above. (A maximum of 5 residents were recruited to the study).