Association between household economic poverty and trachomatous trichiasis.

Socio-economic classification of cases and controls into quintiles based on the first principal component factor scores of the overall asset index and; self and peers ranking of households’ wealth. Analysis is done using conditional logistic regression for trend after likelihood ratio-test for non-linearity. a Marital status and highest family education included in the matched analysis model. † The case households were classified based on the “cut points” of the controls’ socio economic quintiles. ‡ Socioeconomic classification households as rated by the study participants and their peers. Association between household economic poverty and trachomatous trichiasis.