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.