T E C H N I C A L R E P O R T 0666 A TWO-PART JOINT MODEL FOR THE ANALYSIS OF SURVIVAL AND LONGITUDINAL BINARY DATA WITH EXCESS ZEROS RIZOPOULOS, D., VERBEKE, G., LESAFFRE E. and Y. VANRENTERGHEM * IAP STATISTICS NETWORK INTERUNIVERSITY ATTRACTION POLE http://www.stat.ucl.ac.be/IAP