Table 3. Mortality rates and relative risks for Fallon and Marshfield Medicare enrollees and fee-for-service beneficiaries, by months following enrollment: 1980-82.
| Site and measurement | Months following enrollment | ||||
|---|---|---|---|---|---|
|
| |||||
| Total | 1-6 | 7-12 | 13-18 | 19-24 | |
| Fallon | |||||
| Probability of death:1 | |||||
| Enrollees | 0.038 | 0.002 | 0.009 | 0.009 | 0.015 |
| Fee-for-service beneficiaries2 | 0.094 | 0.020 | 0.023 | 0.022 | 0.023 |
| Relative risk (95-percent confidence interval) |
0.40 (.35, .47) |
0.13 (.07, .22) |
0.42 (.31, .56) |
0.41 (.30, .56) |
0.68 (.52, .90) |
| Marshfield | |||||
| Probability of death:1 | |||||
| Enrollees | 0.065 | 0.014 | 0.015 | 0.016 | 0.018 |
| Fee-for-service beneficiaries2 | 0.095 | 0.021 | 0.023 | 0.023 | 0.023 |
| Relative risk (95-percent confidence interval) |
0.68 (.61, .75) |
0.67 (.54, .82) |
0.67 (.54, .82) |
0.73 (.59, .90) |
0.77 (.62, .96) |
1
Probability of death is conditional on survival to the beginning of the interval.
2
The rate for fee-for-service beneficiaries is adjusted to the age and sex distribution of the enrollee population by the direct method.
SOURCE: Health Care Financing Administration, Bureau of Data Management and Strategy: Data from the Medicare Statistical System.