Group Percent of Cases in 2nd Questionnaire Mailing Percent of Cases
Sent to CATI
Follow-Up
Mean Number
Per Case Phone
Attempts
Treatment (N=6,187) 57.7 32.9 10.8
Control (N=6,209) 58.0 33.6 11.1
Overall (N=12,392) 57.8 33.3 11.2