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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).

From: Characterization of potential larval habitats for Anophelesmosquitoes in relation to urban land-use in Malindi, Kenya

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) **    
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) **    
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) **    
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) **    
Drainage (% well drained) 5 (62.5) 16 (76.2) 0.54 0.46 0.52 0.09, 3.0
  1. *d.f. = 1 **Insufficient variability in the data