Table 1 Comparison of characteristics of study participants from the MPI/PO Study by Identification Status on the SSA DMF.
From: Use of the Social Security Administration Death Master File for ascertainment of mortality status
| Identified as Dead (n = 330) Mean (SD) | Not identified as Dead (n = 44) Mean (SD) | P-VALUE | |
|---|---|---|---|
| Age (in years) | 77.5 (9.9) | 70.7 (12.4) | <0.01 |
| Year of birth (in years) | 1920.2 (10.0) | 1927.5 (12.5) * | 0.06 |
| Year of death (in years) | 1997.6 (1.8) | 1998.0 (2.3)* | 0.13 |
| % | % | ||
| Male | 63.1 | 63.6 | 1.00 |
| Foreign Born | 35.8 | 59.1 | 0.01 |
| African Americans | 6.7 | 13.6 | 0.12 |
| Asian | 2.4 | 2.3 | 1.00 |
| Hispanic | 3.9 | 4.5 | 0.69 |