topic Re: Is there a procedure to check whether missing data are missing completely at random or missing at random? in SAS Programming https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179526#M265012 <HTML><HEAD></HEAD><BODY><P>Thanks to all. My sample does not meet the normality assumptions, so I used the Whitney-Mann to test between the complete and missing scores. I appreciate the replies.</P></BODY></HTML> Thu, 15 Jan 2015 19:54:01 GMT k_ecu03 2015-01-15T19:54:01Z Is there a procedure to check whether missing data are missing completely at random or missing at random? https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179523#M265009 <HTML><HEAD></HEAD><BODY><P>I was just wondering if there was a procedure to check whether missing data are MCAR or MAR?</P></BODY></HTML> Mon, 12 Jan 2015 22:40:52 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179523#M265009 k_ecu03 2015-01-12T22:40:52Z Re: Is there a procedure to check whether missing data are missing completely at random or missing at random? https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179524#M265010 <HTML><HEAD></HEAD><BODY><P>Not sure, but you can:</P><P>1-Use the Little's MCAR Test Macro implemented in <A href="http://www.appliedmissingdata.com/macro-programs.html" title="http://www.appliedmissingdata.com/macro-programs.html">http://www.appliedmissingdata.com/macro-programs.html</A></P><P>2-Testing your missing data against known missing patterns as suggested in <A href="http://support.sas.com/resources/papers/proceedings12/319-2012.pdf">Knowledge (of your missing data) is power: handling missing values in your SAS® dataset</A> using the <A href="http://www.columbia.edu/~qc2138/SAS%20Macro.htm">%missingPattern</A> as described in <A href="http://www.columbia.edu/~qc2138/SAS%20global%20forum%20missing%20pattern.pdf">Studying missing data patterns using a SAS macro</A>.</P></BODY></HTML> Tue, 13 Jan 2015 00:09:58 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179524#M265010 mohamed_zaki 2015-01-13T00:09:58Z Re: Is there a procedure to check whether missing data are missing completely at random or missing at random? https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179525#M265011 <HTML><HEAD></HEAD><BODY><P>My thought is checking their frequency, and make a hypothesis test H0: mean of freq =xx .</P></BODY></HTML> Tue, 13 Jan 2015 06:25:55 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179525#M265011 Ksharp 2015-01-13T06:25:55Z Re: Is there a procedure to check whether missing data are missing completely at random or missing at random? https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179526#M265012 <HTML><HEAD></HEAD><BODY><P>Thanks to all. My sample does not meet the normality assumptions, so I used the Whitney-Mann to test between the complete and missing scores. I appreciate the replies.</P></BODY></HTML> Thu, 15 Jan 2015 19:54:01 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179526#M265012 k_ecu03 2015-01-15T19:54:01Z Re: Is there a procedure to check whether missing data are missing completely at random or missing at random? https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179527#M265013 <HTML><HEAD></HEAD><BODY><P>then </P><P>please mark the question as answered.</P></BODY></HTML> Thu, 15 Jan 2015 22:08:32 GMT https://communities.sas.com/t5/SAS-Programming/Is-there-a-procedure-to-check-whether-missing-data-are-missing/m-p/179527#M265013 mohamed_zaki 2015-01-15T22:08:32Z