Table 3.
Average elevation, distance from nearest stream, surface area, habitat number (%) and t-test results for association of variables to anopheline occurrence at Marani and Kombewa in 2004
| Month | Marani
|
Kombewa
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Presence | Absence | t-value | df | p-value | Presence | Absence | t-value | df | p-value | ||
| February | Elevation (m) | 1571.2 ± 3.7 | 1581.2 ± 2.1 | 2.3 | 79 | < 0.05 | 1197.4 ± 4.7 | 1178 ± 9.6 | 1.8 | 5 | > 0.05 |
| Distance (m) | 50.7 ± 10 | 70.5 ± 6.7 | 1.2 | 155 | > 0.05 | 103.5 ± 23.3 | 254.1 ± 104.1 | 1.4 | 3 | > 0.05 | |
| Surface area (m2) | 3.4 ± 0.5 | 6.1 ± 1.3 | 2 | 169 | < 0.05 | 12 ± 1.4 | 5.8 ± 1.9 | 2.9 | 7 | < 0.05 | |
| Habitats | 53 (29.1) | 129 (70.9) | 26 (92.9) | 2 (7.1) | |||||||
| May | Elevation (m) | 1572 ± 2.6 | 1567 ± 1.7 | 1.7 | 209 | < 0.05 | 1191.3 ± 3.7 | 1205 ± 8.9 | 1.4 | 11 | > 0.05 |
| Distance (m) | 53.7 ± 11.7 | 112.2 ± 21.6 | 2.4 | 233 | < 0.05 | 489.1 ± 48 | 427.6 ± 175 | 0.4 | 9 | > 0.05 | |
| Surface area (m2) | 25.8 ± 17.2 | 8.7 ± 2.9 | 1 | 128 | > 0.05 | 27.4 ± 6.9 | 9.5 ± 3.4 | 2.1 | 71 | < 0.05 | |
| Habitats | 132 (48.5) | 140 (51.5) | 70 (88.6) | 9 (11.4) | |||||||
| August | Elevation (m) | 1571.4 ± 2.6 | 1585 ± 2.5 | 3.7 | 188 | < 0.05 | 1200.8 ± 2.7 | 1192 ± 2.4 | 2.3 | 94 | < 0.05 |
| Distance (m) | 81.1 ± 46.9 | 108 ± 17.7 | 0.9 | 123 | > 0.05 | 150.9 ± 26.3 | 170.4 ± 27.3 | 0.8 | 94 | > 0.05 | |
| Surface area (m2) | 16.1 ± 3.5 | 27.2 ± 17.7 | 0.6 | 124 | > 0.05 | 11.5 ± 1.9 | 10 ± 3.2 | 0.4 | 77 | > 0.05 | |
| Habitats | 84 (42.2) | 115(57.8) | 54(1000) | 0 (0) | |||||||
| November | Elevation (m) | 1573.3 ± 2.4 | 1569.9 ± 2 | 1.1 | 196 | > 0.05 | 1200.7 ± 4.6 | 1177.8 ± 11.7 | 4.1 | 69 | < 0.05 |
| Distance (m) | 232.4 ± 34.7 | 162 ± 23.4 | 1.7 | 169 | < 0.05 | 110.4 ± 17 | 128.46 ± 59 | 0.3 | 6 | > 0.05 | |
| Surface area (m2) | 10.5 ± 1.3 | 6.4 ± 0.7 | 2.7 | 139 | < 0.05 | 17.3 ± 2 | 12.1 ± 9 | 0.6 | 4 | > 0.05 | |
| Habitats | 91 (38.9) | 143 (61.1) | 69 (93.2) | 5 (6.8) | |||||||
Figures in parentheses indicate percentages.