https://communities.sas.com/t5/Statistical-Procedures/Significance-statistics-for-tables-with-cells-with-0-obs/m-p/59557#M2759 Hi.I am not familiar with proc surveyfreq.<BR /> But For your situation,It looks like the best way is to use exact analysis or drop/merge these problemed cells. Maybe also you can use Corresponding Analysis to see whether it is significant( But it is only referenced method).<BR /> <BR /> For McNemars ,it is only suited for paired data ,but it is also not suited for your situation.<BR /> Chisquare Distribution is only used for enough freq ( &gt; 5 for each cell ).<BR /> So I highly recommend you to calculate exact probability distribution by exact analysis.<BR /> <BR /> <BR /> Ksharp Fri, 29 Apr 2011 01:36:39 GMT Ksharp 2011-04-29T01:36:39Z https://communities.sas.com/t5/Statistical-Procedures/Significance-statistics-for-tables-with-cells-with-0-obs/m-p/59556#M2758 I've been asked to produce significance statistics for a number of surveys with very small subgroups. Some of the tables have 0 cells, and some have cells with less than 5 observations in them. Normally I produce CHISQs out of SURVEYFREQ for categorical variables, weighted TTESTS for continuous variables, and output the stats via ODS and apply data-driven stars in my reports where appropriate. In this case however, CHISQs are not appropriate for the small cells and just plain won't work for the 0 cells. Does anyone have a work-around for this? Any suggestions greatly appreciated. (I tried McNemars for the 2 x 2 tables which work, no idea if they are appropriate - but McNemars doesn't work for the 2 x &gt;2 tables - these are all comparisons of two groups. Fishers won't work at all. Wald Chis (like the other Chis) also won't work.) Thu, 28 Apr 2011 19:50:44 GMT https://communities.sas.com/t5/Statistical-Procedures/Significance-statistics-for-tables-with-cells-with-0-obs/m-p/59556#M2758 louisehadden 2011-04-28T19:50:44Z https://communities.sas.com/t5/Statistical-Procedures/Significance-statistics-for-tables-with-cells-with-0-obs/m-p/59557#M2759 Hi.I am not familiar with proc surveyfreq.<BR /> But For your situation,It looks like the best way is to use exact analysis or drop/merge these problemed cells. Maybe also you can use Corresponding Analysis to see whether it is significant( But it is only referenced method).<BR /> <BR /> For McNemars ,it is only suited for paired data ,but it is also not suited for your situation.<BR /> Chisquare Distribution is only used for enough freq ( &gt; 5 for each cell ).<BR /> So I highly recommend you to calculate exact probability distribution by exact analysis.<BR /> <BR /> <BR /> Ksharp Fri, 29 Apr 2011 01:36:39 GMT https://communities.sas.com/t5/Statistical-Procedures/Significance-statistics-for-tables-with-cells-with-0-obs/m-p/59557#M2759 Ksharp 2011-04-29T01:36:39Z