*Want to select cases where spellnr=3 as well as the preceding and following case of the same person. * Posted to SPSSX-L by Raynald Levesque on 2002/11/22. DATA LIST LIST /Persnr Spellnr spelltyp begin end sex. BEGIN DATA 203 1 2 143 144 1 203 2 2 145 199 1 203 3 3 199 204 1 605 1 1 155 156 2 605 2 4 157 167 2 605 3 3 168 180 2 605 4 1 181 190 2 702 1 3 167 204 2 END DATA. LIST. COMPUTE casen=$CASENUM. COMPUTE tz=(spelltyp=3). IF LAG(tz)=1 & Persnr=LAG(Persnr) after=1. SORT CASES BY casen(D). IF LAG(tz)=1 & Persnr=LAG(Persnr) before=1. SORT CASES BY casen(A). COMPUTE flag=MIN(1,SUM(tz,after,before)). EXECUTE. SELECT IF flag=1. EXECUTE.