Participants were randomized to : 1 ) a Chronic Disease Self-Management Program ( CDSMP ; n = 101 ) ; 2 ) a diabetes self-care software on a personal digital assistant ( PDA ; n = 81 ) ; 3 ) a combination of interventions ( CDSMP + PDA ; n = 99 ) ; or 4 ) usual care ( control ; n = 95 ) .