qhypothetical prenatal screening data; see ex3_1init.do 20 Jul 2005 18:14dmynobsarm%8.0g%8.0g%8.0g%8.0gynlbltestlblarmlbldiseaset" ooc|EAts.test outcome" ooc|EAts.# of subjects" ooc|EAts.Screening test" ooc|EAts.barmlaceprenatal screening data;note3FP]CVS = chorionic villus samplingDarmlaceprenatal screening data;note0FP]3[armlaceprenatal screening data;note2FP]EA = early amniocentesisarmlaceprenatal screening data;note1FP]unpaired data; randomization of subjects to 1 of 2 screening tests.t" ooynlbl^w`Xnoyestestlbl^w`X-+armlbl^w`XEACVS