Table 3 Bivariate results for proportions of water bodies with anopheline larvae versus no larvae by environmental variables collected about the water body (n = 29).
Variables | Anophelines present (n = 8) | Anophelines absent (n = 21) | χ2 | P-value | O.R. | C.I. |
|---|---|---|---|---|---|---|
Land-use (% residential or commercial) | 5 (62.5) | 21 (100) | ** | Â | Â | Â |
Size (% small habitats) | 3 (37.5) | 7 (33.3) | 0.045 | 0.83 | 1.2 | 0.22, 6.53 |
Nature (% human-made) | 20 (95.2) | 6 (75.0) | ** | Â | Â | Â |
Shade (% some shade) | 5 (62.5) | 13 (61.9) | 0.01 | 0.98 | 1.03 | 0.19, 5.51 |
Pollution (% polluted) | 7 (87.5) | 7 (33.3) | 6.8 | 0.01 | 14 | 1.43, 137.32 |
Substrate (% cement or plastic) | 7 (87.5) | 15 (71.4) | 0.82 | 0.36 | 2.8 | 0.28, 27.91 |
Permanency (% perm. or semi-perm.) | 0 (0.0) | 5 (23.8) | ** | Â | Â | Â |
Animals present (%) | 4 (50.0) | 8 (38.1) | 0.34 | 0.56 | 1.63 | 0.32, 8.4 |
Nearest house (% < 20 meters) | 6 (75.0) | 20 (95.2) | ** | Â | Â | Â |
Drainage (% well drained) | 5 (62.5) | 16 (76.2) | 0.54 | 0.46 | 0.52 | 0.09, 3.0 |