Measuring quality of age reporting data in Pakistan

The objective of the study was to determine the age heaping phenomena in two census data (1981,1998) by using modified whipple's index method. the results of this method was compared with other summary measures of age reporting quality; whipple's index and myer's blended index. the quality of age reporting for 1998 census was improved if compared to the 1981 census data. age heaping occurred most often in the female population compared to male and in rural areas compared to urban areas. the results showed that total modified whipple's index account well for the quality of age reporting and it takes account of preference and avoidance of all ten digits. so it is a fair and reliable measure and produces the same results as myer's blended index. the main advantage of its use lies in the simplicity of its calculation. © 2014 pakistan journal of statistics.