Additional file 1 of Poliovirus immunity among adults in the Democratic Republic of the Congo: a cross-sectional serosurvey

Additional file 1: Table S1. Comparison of DRC 2013–2014 adult DHS respondent demographics across sample split. Table S2. To test for intra-household correlation in seropositivity, we merged the adult and child datasets, and assessed whether any child and/or any adult in the household was seropositive for each type of polio. The table below summarizes the results across households. Using Pearson’s Chi-squared test, we find that sero-status has a mild positive association for Type 2 (p = 0.01), but there is little evidence for within household correlation for Types 1 and 3. Figure S1. Study design flowchart for dried blood spot (DBS) sampling, testing, and analysis. From a total of 8713 DBS collected in the field, 5526 (63.4%) were successfully processed and merged to DHS questionnaire data for inclusion in this analysis.