Table 2.

Regression coefficients and 95% CrI from Bayesian spatial and nonspatial models of P. falciparum and P. vivax cases reported by month and communes in Phu Yen Province, Vietnam, 2005–2016

Variable	P. falciparum RR (95% CrI)	P. vivax RR (95% CrI)
Intercept*	−1.14 (−1.38, −0.94)	−1.23 (−1.48, −1.02)
Population protected (10% increase)†	0.999 (0.998, 1.00)	1.00 (0.998, 1.001)
Precipitation (10 mm increase)	1.054 (1.051, 1.057)	1.032 (1.029, 1.035)
Temperature minimum (°Celsius)	0.923 (0.903, 0.944)	0.895 (0.874, 0.917)
Mean monthly trend	0.934 (0.867, 1.006)	1.89 (1.725, 2.071)
Proportion of zero	0.218 (0.171, 0.264)	0.277 (0.226, 0.327)
Heterogeneity
Unstructured	2.537 (0.689, 8.063)	2.038 (0.581, 6.879)
Structured (spatial)	0.153 (0.091, 0.258)	0.155 (0.084, 0.283)
Structured (trend)	2.903 (1.681, 4.675)	2.45 (1.364, 4.084)

CrI = credible interval; P. falciparum = Plasmodium falciparum; P. vivax = Plasmodium vivax; RR = relative risk.

^*Coefficients.

^†Proportion of population protected by preventive measures.