Table 1. Pharmacy Follow-Back Study Status of Sample Persons in the Medicare Cost and Use File: CY 1999.
| Follow-Back Category | Sample Persons | MCBS Respondents | Study Participants or Non-Participants |
|---|---|---|---|
|
| |||
| Percent | |||
| Total Sample | 13,106 | 100 | NA |
| Excluded from the Follow-Back Study | 3,722 | 28 | 100 |
| No 1999 Event Level Drug Data Collected in Facility for All of 1999 | 946 | NA | 25 |
| New Enrollee in 1998 or 1999 | 638 | NA | 17 |
| Didn't Receive Round 26 Interview | |||
| Proxy Interviews | 1,162 | NA | 31 |
| Spring Interview Was Facility Interview | 227 | NA | 6 |
| Deaths and Refusals | 749 | NA | 20 |
| Asked to Participate in Follow-Back Study | 9,384 | 72 | 100 |
| Refused | 570 | NA | 6 |
| No Pharmacies Reported by Beneficiary | 408 | NA | 4 |
| Reported 1 or More Pharmacies | |||
| Partial Complete1 | 813 | NA | 9 |
| Pharmacy Non-Response or Unusable Data2 | 2,291 | NA | 24 |
| All Pharmacies Reported Usable Data | 5,302 | NA | 57 |
1
At least 1, but not all pharmacies responded.
2
For example, missing or invalid dates.
NOTES: Numbers may not add to totals due to rounding. NA is not applicable.
SOURCE: Centers for Medicare & Medicaid Services: Office of Research, Demonstrations and Information: Data from the Medicare Current Beneficiary Survey, Pharmacy Follow-Back Study, 1999.