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Table 3 Multivariable analysis: factors associated with the presence or absence of anopheline larvae.

From: Agriculture and the promotion of insect pests: rice cultivation in river floodplains and malaria vectors in The Gambia

Variables All anophelines An. gambiae s.l.
  Wald Odds Ratio (OR) 95% OR P Wald Odds Ratio (OR) 95% OR P
Spatial measurements
Distance from landward edge of transect
1–100 m   1.00     1.00   
200–500 m 40.5 0.04 0.01–0.10 <0.001 13.15 0.13 0.04–0.39 <0.001
Position of sampling point within rice field
Landward edge   1.00     1.00   
Centre 4.97 0.23 0.06–0.84 0.026 5.75 0.10 0.02–0.66 0.016
Riverside edge 3.95 0.31 0.10–0.98 0.047 2.42 0.33 0.08–1.34 0.081
Biotic measurements
Rice in area samples
Absent   1.00     1.00   
Present 13.78 28.25 4.84–164.85 <0.001 7.01 10.53 1.84–60.16 0.008
Culicine larvae
Absent   1.00     1.00   
Present 9.72 2.78 1.46–5.30 0.002 14.23 6.06 2.38–15.44 <0.001
Insect biodiversity
  2.92 2.16 0.89–5.20 0.087 0.17 1.21 0.50–2.95 ns