Bias can be eliminated by all except

Ans. d. Multivariate analysis Multivariate analysis refers to the analysis of two or more dependent variables at a time. It is done after the study has been conducted, to analyze the study. While matching, binding and randomization all are done when the study is being conducted. (AHMS November 2010 Repeat). * "Confounding factors are an impoant source of bias. This can be removed by matching in case-control studies." "The selection bias can be eliminated by randomization." "Interviewer's bias can be eliminated by double-blinding