Risk factors for trichiasis (TT) in those aged 15 years and above.

aUnivariate effects adjusted for between-household and between-village variation.bp-value from likelihood ratio test comparing random effects logistic regression models adjusting for between-household variation with, and without, characteristic of interest.cAdjusted for variables included in final multivariable regression model as shown and between-household variation.dVariables modelled as continuous measures.eProtected source: handpump or well; unprotected: river, stream, pond or swamp.fSelf-reported.gObserved by fieldworker.hObserved as flies in and around the living quarters (excluding areas around cattle) and, or faces of children; no if recorded as none or few (1–5); yes if recorded as 5 or more flies.