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Table 3 Parameter estimates for the negative binomial models explaining the abundance of selected Phlebotomine sand fly species in Trinidad de Las Minas, Capira, Panamá

From: Leishmaniasis sand fly vector density reduction is less marked in destitute housing after insecticide thermal fogging

Parameter Species Proportional abundance change Estimate S.E. z Pr(>|z|)
Domicile Lutzomyia trapidoi 1 (563) 6.333 0.794 7.980 <0.00001x
Lu. gomezi 1 (38) 3.647 0.220 16.586 <0.00001x
Lu. panamensis 1 (7) 2.010 0.212 9.467 <0.00001x
Lu. triramula 1 (5) 1.646 0.328 5.015 <0.00001x
Lu. dysponeta 1 (16) 2.752 0.745 3.694 0.000221x
Peridomicile Lu. trapidoi 0.52 −0.646 0.306 −2.108 0.0350x
Lu. gomezi 0.58 −0.551 0.278 −2 0.0454x
Lu. panamensis 3.52 1.258 0.258 4.886 <0.00001x
Lu. triramula 9.54 2.255 0.412 5.468 <0.00001x
Lu. dysponeta 1.32 0.281 0.284 0.987 0.324
Fogged Lu.trapidoi 1.05 0.0486 0.323 0.151 0.880
Lu. gomezi 0.32 −1.128 0.292 −3.864 0.000112x
Lu. panamensis 0.60 −0.515 0.271 −1.898 0.0576
Lu. triramula 0.09 −2.381 0.452 −5.271 <0.00001x
Lu. dysponeta 0.49 −0.711 0.306 −2.323 0.0201x
M-Rain Lu.trapidoi 0.67 −0.397 0.142 −2.792 0.00524x
Lu. dysponeta 0.66 −0.414 0.132 −3.125 0.00178x
S.D.-Rain Lu.trapidoi 0.71 −0.337 0.0624 −5.401 <0.00001x
Lu. gomezi 0.75 −0.289 0.100 −2.884 <0.00001x
Lu. panamensis 0.76 −0.278 0.0936 −2.973 <0.00001x
Lu. triramula 1.46 0.379 0.158 2.399 <0.00001x
Lu. dysponeta 1.07 0.0669 0.0602 1.111 0.266
S.D.*M-Rain Lu.trapidoi 1.03 0.0341 0.00859 3.973 <0.00001x
Lu. dysponeta 1.01 0.0142 0.00812 1.751 0.0798
S.D.-Rain2 Lu. gomezi 1.01 0.0101 0.00386 2.630 0.00855x
Lu. panamensis 1.01 0.0140 0.00358 3.928 <0.00001x
Lu. triramula 0.99 −0.0106 0.00586 −1.807 0.0708
  1. xStatistically Significant (P < 0.05). the value inside parenthesis is the estimated abundance for the reference group, i.e., Control-Domicile. * indicates a synergistic (a.k.a. interaction) effect. The overdispersion parameter estimates (± S.E.) were 0.973 ± 0.210 for Lu. trapidoi, 1.182 ± 0.234 for Lu. gomezi, 1.487 ± 0.372 for Lu. panamensis, 0.623 ± 0.141 for Lu. triramula and 1.255 ± 0.302 for Lu. dysponeta.
  2. Parameter indicates the different variables considered in the models for the selected sand fly species (see column with heading Species). Models considered the habitat (Domicile or Peridomicile), the Fogging (Fogged), and a second degree polynomial for the monthly S.D. of daily Rainfall (S.D.-Rain) for Lutzomyia gomezi, Lu. panamensis and Lu. triramula; and the interaction between S.D. and the mean (M-Rain) monthly daily rainfall for Lu. trapidoi and Lu. dysponeta.