Table 9. The Change in the Short-stay Hospital Discharge Rate Allocated to the Change in the User Rate and the Stay Rate, Medicare Enrollees Age 65 and Over, U.S., 1967 and 1977.
| Contribution to Change in Discharge Rate | ||||
|---|---|---|---|---|
|
|
||||
| Measure | 1967 | 1977 | Discharges per 1,000 Enrollees | Percent |
| Discharge Rate (Number of discharges per 1,000 enrollees) | 259 | 335 | 761 | 1001 |
|
| ||||
| User Rate (Number of persons hospitalized per 1,000 enrollees) | 187 | 226 | 54 | 71 |
|
| ||||
| Stay Rate (Number of discharges per user) | 1.38 | 1.48 | 19 | 25 |
|
| ||||
| Interaction Term | — | — | 4 | 5 |
1
Parts do not add to total due to rounding.
Note: The technique for ascribing the change in the discharge rate to its components is described in Clifford H. Springer, Robert E. Herlihy and Robert I. Beggs, Advanced Methods and Models, Vol. II of the Mathematics for Management Series, Richard D. Irwin, Inc., 1965, pp. 122-125.