. . . "Village has 5 factors, A, B, C, D, E. However, one of the factor remained unused..for say there are 14 participants recruited from A, 20 from B, 25 from C, 15 from D but none(0) from E. During data entry this factor E was not removed and persisted during the analysis, as data entry was done in SPSS and imported to R using foreign package." . . .