https://communities.sas.com/t5/SAS-Programming/How-do-I-calculate-the-index-of-disparity/m-p/315593#M68869 <P>And what&nbsp; is "yref"? Is it calcuated from the Yj sample?</P> <P>&nbsp;</P> <P>If yref is mean of y,&nbsp; then you are simply asking for 100 times the mean absolute deviation, scaled by the mean.</P> Wed, 30 Nov 2016 16:27:10 GMT mkeintz 2016-11-30T16:27:10Z https://communities.sas.com/t5/SAS-Programming/How-do-I-calculate-the-index-of-disparity/m-p/314974#M68656 <P>How do I calculate the Index of disparity with SAS?&nbsp;</P><P>IDisp=∑(|yj – yref|/J - 1)/yref X 100</P><P>&nbsp;</P><P>yj indicates the measure of health status in the jth<BR />group, and yref is the health status indicator in the reference<BR />population. J is the total number of groups.</P> Wed, 30 Nov 2016 16:55:16 GMT https://communities.sas.com/t5/SAS-Programming/How-do-I-calculate-the-index-of-disparity/m-p/314974#M68656 jkwarteng 2016-11-30T16:55:16Z https://communities.sas.com/t5/SAS-Programming/How-do-I-calculate-the-index-of-disparity/m-p/315004#M68664 <P>First you may want to double check your spelling. You have a single | and I'm not sure if you intended to have | yj -yref | or | yj - yrefj | or something else. Also where you use E is that supposed to be the Expectation or something else.</P> <P>&nbsp;</P> <P>&nbsp;</P> Mon, 28 Nov 2016 23:13:25 GMT https://communities.sas.com/t5/SAS-Programming/How-do-I-calculate-the-index-of-disparity/m-p/315004#M68664 ballardw 2016-11-28T23:13:25Z https://communities.sas.com/t5/SAS-Programming/How-do-I-calculate-the-index-of-disparity/m-p/315593#M68869 <P>And what&nbsp; is "yref"? Is it calcuated from the Yj sample?</P> <P>&nbsp;</P> <P>If yref is mean of y,&nbsp; then you are simply asking for 100 times the mean absolute deviation, scaled by the mean.</P> Wed, 30 Nov 2016 16:27:10 GMT https://communities.sas.com/t5/SAS-Programming/How-do-I-calculate-the-index-of-disparity/m-p/315593#M68869 mkeintz 2016-11-30T16:27:10Z