Table 1.

Simple linear regression of contextual factors and typhoid and paratyphoid fever

Contextual factor	Organism	R intercept	R slope	R R2	R confidence interval	P value
Improved water	S. Typhi	81.2	−0.787	0.694	(−1.16, −0.42)	0.0008
Improved sanitation		21.0	−0.163	0.00236	(−2.52, 2.19)	0.8809
Diarrheal mortality		2.48	6.33	0.735	(3.47, 9.19)	0.00074
Poverty rate		5.39	2.01	0.403	(−0.432, 4.447)	0.0908
Improved water	S. Paratyphi	0.461	0.000872	0.000227	(−0.0399, 0.0416)	0.9629
Improved sanitation		5.38	−0.0519	0.0640	(−0.1917, 0.08796)	0.4276
Diarrheal mortality		0.592	−0.0687	0.0168	(−0.465, 0.327)	0.7042
Poverty rate		0.581	−0.0340	0.00980	(−0.375, 0.307)	0.8156