Research Article

Malaria Risk Stratification and Modeling the Effect of Rainfall on Malaria Incidence in Eritrea

Table 3

Cross-correlation analysis by cluster with CCF and SE.

High-risk clusterModerate-risk clusterLow-risk clusterVery low-risk cluster
Lagged monthsCCFSECCFSECCFSECCFSE

−70.0170.137−0.1590.137−0.2180.137−0.1400.137
−60.1880.136−0.0200.136−0.0930.136−0.0160.136
−50.3180.1350.1470.1350.0460.1350.1820.135
−40.3050.1340.3650.1340.3080.1340.3890.134
−30.2970.1320.5850.1320.5660.1320.5560.132
−20.3000.1310.4740.1310.5750.1310.5670.131
−10.2820.1300.2900.1300.4510.1300.3650.130
00.0290.1290.0660.1290.2110.1290.0090.129
1−0.0070.130−0.2840.130−0.1410.130−0.2660.130
2−0.0430.131−0.4920.131−0.3580.131−0.3230.131
3−0.1530.132−0.5060.132−0.3410.132−0.2620.132
4−0.0610.134−0.3920.134−0.2710.134−0.1900.134
5−0.0990.135−0.1820.135−0.2110.135−0.1420.135
6−0.1080.136−0.0280.136−0.1390.136−0.0800.136
70.0280.1370.1460.137−0.0410.1370.0200.137

CCF: cross-correlation coefficient; SE: standard error; lag: the number of lagged months. Significant cross-correlation of the lagged month between the monthly malaria incidence and rainfall.