Table 2 Characterization of anopheline larvae breeding sites
Characteristics | Variables | Number of BS sampled | Number of BS with anopheline larvae (%) | Odd ratio (95% CI) | P-value |
|---|---|---|---|---|---|
Proximity to living habitats (meter) | ≤ 10 | 283 | 108 (38.2) | 1 | 0.002 |
> 10 | 247 | 127 (51.4) | 1.7 (1.2–2.4) | ||
Size (m2) | ≤ 1 | 228 | 138 (60.5) | 1 | < 0.0001 |
> 1 | 302 | 97 (32.1) | 0.3 (0.2–0.4) | ||
Depth (meters) | < 1 | 465 | 223 (48.0) | 1 | < 0.0001 |
≥ 1 | 65 | 12 (18.5) | 0.25 (0.1–0.5) | ||
Permanency | Temporal | 397 | 207 (52.1) | 1 | < 0.0001 |
Semi-permanent | 64 | 16 (25.0) | 0.3 (0.2–0.5) | ||
Permanent | 69 | 12 (17.4) | 0.2 (0.1–0.4) | < 0.0001 | |
Vegetation cover (%) | 0–25 | 439 | 213 (48.5) | 1 | < 0.0001 |
25–75 | 65 | 13 (20.0) | 0.3 (0.1–0.5) | ||
75–100 | 26 | 6 (23.1) | 0.3 (0.1–0.8) | 0.016 | |
Algae | Present | 110 | 40 (36.4) | 1 | 0.06 |
Absent | 420 | 195 (46.4) | 1.5 (1.0–2.3) | ||
Culicine larvae | Present | 115 | 38 (33.0) | 1 | 0.3 |
Absent | 414 | 158 (38.2) | 1.3 (0.8–1.9) | ||
Predators | Present | 99 | 22 (22.2) | 1 | < 0.0001 |
Absent | 431 | 213 (49.4) | 3.4 (0.2–5.7) |