Table 5.

Multivariable Regression Analysis of the Incidence of Radiologically Confirmed Pneumonia per Child-Year, by Ethnicity and District, the Gambia, 2001–2004

Variable	First Events			All Events
	Estimate	Robust SE	95% CI	Estimate	Robust SE	95% CI
Ethnicity (referent: Mandinka)
Fulla	−0.0085	0.0030	−0.0145, −0.0026	−0.0097	0.0033	−0.0161, −0.0032
Serahule	−0.0072	0.0031	−0.0132, −0.0011	−0.0083	0.0034	−0.0149, −0.0017
Wolof	−0.0078	0.0045	−0.0167, 0.0011	−0.0089	0.0049	−0.0186, 0.0007
Others	−0.0207	0.0075	−0.0353, −0.0061	−0.0205	0.0089	−0.0378, −0.0031
Vaccine	−0.0151	0.0023	−0.0196, −0.0105	−0.0163	0.0025	−0.0212, −0.0113
District (referent: others)
Bansang	0.0477	0.0066	0.0348, 0.0606	0.0518	0.0071	0.0379, 0.0656
Basse	0.0105	0.0027	0.0052, 0.0158	0.0116	0.0029	0.0059, 0.0174
Age, years	−0.0398	0.0072	−0.0540, −0.0257	−0.0442	0.0076	−0.0590, −0.0294
Male gender	0.0037	0.0023	−0.0009, 0.0082	0.0036	0.0025	−0.0013, 0.0085
Intercept	0.0484	0.0036	0.0413, 0.0556	0.0525	0.0039	0.0449, 0.0602

Abbreviations: CI, confidence interval; SE, standard error.