Many seniors and their advocates say using the Consumer Price Index for the Elderly (CPI-E) is a better measure than the CPI-W which is the current measure. 

Better be careful what you ask for because the result you get may not be the one you want and it all depends on the years you measure. The CPI-E considers more of health care costs, but when those costs are not rising as much as in the past, seniors lose. Take a look at the results which in any case are not that different in total among the various measures.