Table 4 Analysis of variance (based on a Type-III error) to explain the perception of the current risk of Zika autochthonous cases at the department scale after a stepwise backward minimal model using a GLM procedure; n = 68 respondents, R2 = 0.171, AIC = 296.256. Autochthonous cases refer to the identification of dengue and/or chikungunya autochthonous cases in the previous year in the respondent’s department