Table 3 Mean number of larvae per 100 dips of each anopheline species for each environmental variable. The 95% confidence intervals are provided in parentheses

 No (n = 361)

0.14 (0–0.35)

0.64 (0.36–0.92)

None

0.01 (0–0.03)

0.41 (0.25–0.56)

0.18 (0.11–0.25)

0.20 (0.002–0.42)

 Yes (n = 350)

3.15 (1.37–4.94)

1.19 (0.78–1.61)

0.58 (0.17–0.98)

0.30 (0.17–0.43)

0.05 (0–0.12)

0.44 (0.05–0.83)

0.03 (0–0.06)

 Permanent (n = 435)

2.47 (1.03–3.91)

0.87 (0.56–1.17)

0.44 (0.12–0.77)

0.15 (0.07–0.24)

0.13 (0.04–0.23)

0.29 (0–0.58)

0.17 (0.002–0.35)

 Seasonal (n = 276)

0.29 (0.01–0.58)

0.98 (0.56–1.40)

0.04 (0–0.08)

0.16 (0.05–0.26)

0.39 (0.23–0.56)

0.35 (0.15–0.55)

0.03 (0.006–0.06)

 Shaded (n = 424)

0.01 (0–0.03)

0.46 (0.27–0.64)

None

0.01 (0–0.03)

0.31 (0.18–0.45)

0.31 (0.16–0.45)

0.18 (0.003–0.36)

 Partially exposed (n = 200)

1.11 (0.41–1.82)

1.71 (1.05–2.37)

0.07 (0.003–0.14)

0.28 (0.11–0.45)

0.16 (0.02–0.30)

0.44 (0–1.06)

0.04 (0–0.09)

 Mostly exposed (n = 87)

10.66 (3.75–17.57)

1.29 (0.34–2.25)

2.17 (0.56–3.77)

0.54 (0.18–0.91)

None

0.03 (0–0.10)

0.01 (0–0.3)

 Clear (n = 480)

1.70 (0.67–2.73)

0.50 (0.36–0.64)

0.37 (0.08–0.66)

0.11 (0.04–0.18)

0.30 (0.19–0.41)

0.32 (0.04–0.60)

0.18 (0.02–0.34)

 Semi-turbid (n = 160)

1.86 (0–4.35)

1.33 (0.69–1.97)

0.13 (0–0.33)

0.28 (0.09–0.48)

0.04 (0–0.07)

0.34 (0.14–0.54)

None

 Turbid (n = 71)

0.61 (0.18–1.04)

2.74 (0.99–4.49)

0.08 (0–0.21)

0.17 (0–0.38)

0.22 (0–0.65)

0.16 (0–0.33)

None

 Yes (n = 176)

0.07 (0–0.15)

0.38 (0.19–0.57)

None

0.02 (0–0.05)

0.26 (0.11–0.42)

0.11 (0.02–0.19)

0.45 (0.02–0.87)

 No (n = 535)

2.14 (0.96–3.32)

1.08 (0.76–1.41)

0.38 (0.11–0.64)

0.20 (0.11–0.29)

0.22 (0.12–0.33)

0.38 (0.12–0.64)

0.01 (0–0.03)

 Absent (n = 674)

0.67 (0.37–0.97)

0.94 (0.68–1.20)

0.03 (0.01–0.05)

0.15 (0.08–0.21)

0.24 (0.15–0.34)

0.33 (0.12–0.53)

0.13 (0.01–0.24)

 Present (n = 37)

19.03 (3.16–34.90)

0.42 (0.03–0.81)

4.94 (1.28–8.60)

0.30 (0–0.67)

0.02 (0–0.06)

None

None