Epidemiology of soil-transmitted helminths using quantitative PCR and risk factors for hookworm and Necator americanus infection in school children in Dak Lak province, Vietnam

Table 4 Factors associated with moderate-to-heavy-intensity Necator americanus infection

Factors investigated comparing moderate-to-heavy-intensity infection to light-intensity infection
*Proportion of the total sample size that had qPCR positive for Necator americanus, N = 1058
^†Number observations included in final multivariable model, not all 1058 observations included due to missingness of specific variables (1% of cases had incomplete data for the predictors in these models and therefore not included in the analyses). Reference = reference category for categorical variable. Infection intensity classes are according to WHO guidelines for classifying infection intensity based on EPG values; Light-intensity infection: N. americanus (1–1999 EPG) moderate: N. americanus (2000–3999 EPG); heavy: N. americanus (≥ 4000 EPG). Moderate and heavy intensity analysed as a single group to align with WHO 2030 targets STH control programme monitoring targets
^aEthnicities where the number of students were less than 200 were grouped together under ‘other’ for risk factor analysis, see Additional file 1: Table S2 for a complete breakdown of student ethnicities

ISSN: 1756-3305