An extension of modified Whipple index-further modified Whipple index

To evaluate the erroneous age reporting,there are several methods available depending on the type of age statistics used. for instance,for single year age-sex distributions,conventionally,whipple and whipple type,myers' and bachi index are available. all these measures are based on the assumption of linearity in terms of mathematical structuring used for the development of indexes. this paper extends the modified whipple index as a general measure of the quality of age reporting in complement to spoorenberg's previous development (2007). when compared to spoorenberg's version,the proposed total further modified is observed to be an-easy to estimate measure than total modified whipple measure. in addition,proposed measure is also based on the assumption of linearity. notably proposed index produces practically the same results and direction of error as myer's,whipple,whipple type,and modified whipple index. © 2014 pakistan journal of statistics.