Figure 1

Study participation profile of the TELECHIK cohort study. Exposure was defined using Chikungunya virus (CHIKV)-specific IgG antibodies and self-report of common symptoms within six strata: FN = false negative, FP = false positive, NKN = not knowing negative, NKP = not knowing positive, TN: true negative, TP: true positive. *In all, 8 questionnaires were excluded for poor quality responses (impossibility of interpretation), and 46 were excluded for responders different from the index individual, parents or legal guardian in the TELECHIK survey.