Table 3. Characteristics of malaria risk factors by altitude in highland villages, northwest Ethiopia, 2013.
| Variables | Altitude | |||
| 1500–1750 m | 1750–2000 m | Above 2000 m | ||
| Sex | Female | 47(22.1%) | 25(17.4%) | 267(24.3%) |
| Male | 166(77.9) | 119(82.6%) | 831(75.7%) | |
| Age | 15–29 | 159(74.6%) | 88(61.1%) | 785(71.5%) |
| 30–44 | 38(17.8%) | 37(25.7%) | 223(20.3%) | |
| 45–64 | 16(7.6%) | 17(11.8%) | 83(75.6%) | |
| > = 65 | 2(1.4%) | 7(0.64%) | ||
| Travel away home | No | 120(56.3%) | 85(59.0%) | 715(65.1%) |
| yes | 93(43.7%) | 59(41.0%) | 383(34.9%) | |
| ITN own | No | 24(11.3%) | 11(7.6%) | 948(86.3%) |
| Yes | 189(88.7%) | 133(92.4%) | 150(13.7%) | |
| IRS sprayed | No | 164(77%) | 130(90.3%) | 1093(99.5%) |
| Yes | 49(23%) | 14(9.7%) | 5(0.5%) | |
| Plants used for fence | No | 160(75.1%) | 140(97.2%) | 1017(92.8%) |
| Yes | 53(24.9%) | 4(2.8%) | 80(7.2%) | |
| Forest near homestead | No | 47(22.1%) | 36(25.0%) | 287(26.1%) |
| Yes | 166(77.9%) | 108(75.0%) | 811(73.9%) | |
| Stagnant water near the house | No | 172(80.8%) | 97(67.4%) | 962(87.7%) |
| Yes | 41(19.2%) | 47(32.6%) | 135(12.3%) | |
| Borehole near the house | No | 197(92.5%) | 136(94.4%) | 1029(93.7%) |
| Yes | 16(7.5%) | 8(5.6%) | 69(6.3%) | |
| Malaria infection | No | 125(58.7%) | 82(56.9%) | 634(57.7%) |
| Yes | 88(41.3%) | 62(43.1%) | 464(42.3%) | |
| Malaria species | P.falciparum | 54(61.4%) | 38(61.3%) | 239(51.6%) |
| P.vivax | 12(13.6%) | 7(11.3%) | 94(20.3%) | |
| mixed | 22(25.0%) | 17(27.4%) | 130(28.1%) | |