Table 1.

Recruitment of participants

SPM, N (%)MPM, N (%)
Eligible and approached*4,560 (100)2,308 (100)
    Nonparticipants2,090 (46)1,098 (48)
        Deceased before contact170 (3.7)94 (4.1)
        Physician refusal172 (3.7)92 (3.9)
        Patient refusal1,330 (29.2)644 (27.9)
        Lost to follow-up418 (20.0)268 (11.6)
Participated2,470 (54)1,210 (52)
Successful DNA amplification2,424 (98.1)1,189 (98.3)
  • * Ninety-six patients are in both the MPM and the SPM groups. Ninety-three of the 96 patients had successful DNA amplification. Thus, the total number of individual participants available for genetic analysis is 3,520.