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Table 3 Effects of proximity to a dam and altitude on Plasmodium vivax malaria southwest Ethiopia, September 2003 to August 2011

From: Dynamics of Plasmodium falciparium and Plasmodium vivaxin a micro-ecological setting, Southwest Ethiopia: effects of altitude and proximity to a dam

Variables Categories IRR of Pv Std. Err. P Value 95% C.I.
Lower Upper
Buffer zones relative to GGHD < 1 km 1     
1-2 km 9.82 0.32 < 0.001 9.22 10.47
2-3 km 13.56 0.50 < 0.001 12.61 14.58
3-4 km 11.94 0.49 < 0.001 11.02 12.93
4-5 km 52.00 2.10 < 0.001 48.03 56.29
>5 km 68.72 3.46 < 0.001 62.26 75.85
Altitude in meters ≤ 1700 m 1     
1701-1800 0.02 0.001 < 0.001 0.02 0.01
1801-1900 0.44 0.03 < 0.001 0.38 0.50
1901-2000 0.64 0.05 < 0.001 0.55 0.75
2001-2100 0.51 0.06 < 0.001 0.41 0.64
>2100 m 0.54 0.06 < 0.001 0.43 0.68
Age (year) < 5 1     
5-9 0.91 0.04 0.03 0.83 0.99
10-14 0.84 0.04 < 0.001 0.78 0.92
  15 + 0.89 0.03 0.001 0.83 0.95
Sex Male 1     
Female 1.04 0.02 0.04 1.00 1.09