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Table 1 Number of mosquitoes caught by different sampling methods for 240 trap nights each and their relative rates in reference to the indoor human landing catches, as determined by fitting generalized linear mixed models a

From: Evaluation of alternative mosquito sampling methods for malaria vectors in Lowland South - East Zambia

Sampling method Catchb Relative sensitivityc
  Total Mean [95% CI] RR [95% CI] P value
Anopheles quadriannulatus     
HLC indoor 405 1.687 [1.531, 1.860] 1.00d NAe
HLC outdoor 242 1.004 [0.885, 1.139] 0.597 [0.509, 0.700] < 0.001
CDC light trap 784 3.267 [3.046, 3.504] 1.873 [1.653, 2.122] 0.997
Ifakara tent trap – C 21 0.088 [0.057, 0.134] 0.050 [0.032, 0.078] < 0.001
Window exit trap 1 0.004 [0.001, 0.030] 0.002 [0.000, 0.015] < 0.001
Resting boxes indoor 0 NEf NEf NEf
Resting boxes outdoor 2 0.008 [0.002, 0.033] 0.004 [0.001, 0.016] < 0.001
Anopheles funestus     
HLC indoor 1749 7.287 [6.954, 7.637] 1.00d NAe
HLC outdoor 1635 6.784 [6.463, 7.121] 0.928 [0.868, 0.993] < 0.001
CDC light trap 2630 10.958 [10.547, 11.385] 1.532 [1.441, 1.628] < 0.001
Ifakara tent trap – C 1410 5.875 [5.576, 6.190] 0.821 [0.765, 0.881] < 0.001
Window exit trap 71 0.296 [0.234, 0.373] 0.040 [0.032, 0.051] < 0.001
Resting boxes indoor 38 0.158 [0.115, 0.218] 0.022 [0.016, 0.030] < 0.001
Resting boxes outdoor 110 0.458 [0.380, 0.553] 0.063 [0.052, 0.076] < 0.001
Other anophelines     
HLC indoor 1661 8.046 [7.695, 8.413] 1.00d NAe
HLC outdoor 2064 9.685 [9.300, 10.086] 1.207 [1.137, 1.287] < 0.001
CDC light trap 661 2.754 [2.552, 2.972] 0.337 [0.308, 0.369] < 0.001
Ifakara tent trap – C 28 0.117 [0.081, 0.169] 0.014 [0.010, 0.021] < 0.001
Window exit trap 7 0.029 [0.014, 0.061] 0.003 [0.002, 0.007] < 0.001
Resting boxes indoor 4 0.017 [0.006, 0.044] 0.002 [0.001, 0.005] < 0.001
Resting boxes outdoor 20 0.083 [0.054, 0.129] 0.010 [0.006, 0.015] < 0.001
Culicine species     
HLC indoor 1971 8.296 [7.939, 8.668] 1.00d NAe
HLC outdoor 1921 8.033 [7.683, 8.399] 0.971 [0.912, 1.0349] 0.349
CDC light trap 1782 7.425 [7.088, 7.778] 0.871 [0.817, 0.930] < 0.001
Ifakara tent trap – C 369 1.538 [1.388, 1.703] 0.180 [0.161, 0.202] < 0.001
Window exit trap 54 0.225 [0.172, 0.294] 0.025 [0.019, 0.033] < 0.001
Resting boxes indoor 6 0.025 [0.011, 0.056] 0.003 [0.001, 0.006] < 0.001
Resting boxes outdoor 18 0.075 [0.047, 0.119] 0.008 [0.005, 0.013] < 0.001
  1. a As described in the methods section, village, season and treatment were all included as fixed effects while household and date were included as random effects. In sampling An. quadriannulatus, both village and treatment did not significantly affect (P = 0.894 and 0.0845 respectively), the catches of mosquitoes by all methods. The catches of An. funestus were also significantly affected by village (P = 0.004) and treatment (p = 0.011). The catches of other anophelines and culicines were not significantly affected by village (P = 0.268 and 0.265) and treatment (P = 0.717 and 0.721) respectively. The catches of all the mosquito taxa were significantly affected by season (P < 0.001).
  2. b Mean and 95% confidence intervals (CI) were estimated by fitting generalised linear mixed models as described above, except that only method, date and house were included in a model without intercept.
  3. c Sensitivity of the sampling method catch with reference to HLC placed indoors (RR indicate Relative Rate).
  4. d Reference method.
  5. e Not applicable.
  6. f Not estimable due to no mosquito catch.