Table 6. Comparison of MCBS Eligibles, Respondents, and Nonrespondents for Panel Attrition Analysis Samples, by Selected Characteristics1.
| Characteristic | Second Year Attrition Sample | Third Year Attrition Sample | Fourth Year Attrition Sample | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
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| Eligible | Respondent | Nonrespondent | Statistical Significance | Eligible | Respondent | Nonrespondent | Statistical Significance | Eligible | Respondent | Nonrespondent | Statistical Significance | |
| Sample | 7,544 | 6,708 | 836 | — | 6,345 | 6,009 | 336 | — | 5,437 | 5,264 | 173 | — |
| Percent | Percent | Percent | ||||||||||
| Age | ||||||||||||
| Under 65 Years | 13.6 | 13.6 | 13.3 | — | 12.9 | 12.6 | 16.8 | ** | 11.6 | 11.5 | 14.7 | — |
| 65-74 Years | 45.5 | 45.9 | 41.9 | ** | 43.1 | 43.1 | 42.6 | — | 39.7 | 39.6 | 44.3 | — |
| 75-84 Years | 31.9 | 31.6 | 34.5 | * | 34.6 | 34.7 | 33.5 | — | 38.5 | 38.7 | 32.1 | * |
| 85 Years or Over | 9.0 | 8.9 | 10.3 | — | 9.4 | 9.5 | 7.1 | — | 10.1 | 10.2 | 8.9 | — |
| Female | 56.1 | 55.9 | 57.4 | — | 56.0 | 55.8 | 58.9 | — | 56.5 | 56.4 | 58.9 | — |
| Income Categories | ||||||||||||
| Under $15,000 | 42.9 | 43.0 | 42.3 | — | 40.9 | 41.3 | 33.6 | *** | 41.1 | 41.5 | 30.4 | *** |
| $15,001-$30,000 | 25.0 | 25.5 | 21.2 | *** | 32.8 | 32.6 | 35.1 | — | 33.9 | 33.8 | 36.0 | — |
| $30,001-$50,000 | 12.9 | 13.1 | 11.2 | — | 16.9 | 16.8 | 18.9 | — | 15.0 | 14.7 | 23.1 | *** |
| Over $50,000 | 9.5 | 9.4 | 10.6 | — | 9.5 | 9.3 | 12.5 | * | 10.0 | 10.0 | 10.6 | — |
| Race | ||||||||||||
| White | 86.0 | 85.8 | 87.4 | — | 86.1 | 86.2 | 85.7 | — | 86.8 | 86.7 | 90.3 | — |
| Black | 8.7 | 8.7 | 8.1 | — | 8.6 | 8.6 | 7.3 | — | 8.4 | 8.4 | 8.0 | — |
| Other | 5.4 | 5.5 | 4.5 | — | 5.3 | 5.2 | 7.0 | — | 4.8 | 4.9 | 1.7 | ** |
| Medicaid Status | 12.9 | 13.5 | 8.5 | — | 12.8 | 13.0 | 8.2 | — | 12.8 | 13.0 | 7.2 | ** |
| Metropolitan Area Status | 71.6 | 70.5 | 80.4 | *** | 71.2 | 70.9 | 77.6 | *** | 69.7 | 69.4 | 77.0 | ** |
| Mean HCC-DCG Risk Score2 | 0.93 | 0.92 | 0.96 | * | 0.94 | 0.93 | 1.02 | ** | 0.97 | 0.97 | 0.97 | — |
| Total Medicare Expenditures | 4,019 | 4,060 | 3,695 | — | 3,584 | 3,520 | 4,709 | ** | 3,789 | 3,803 | 3,369 | — |
| Inpatient Ependitures | 1,966 | 2,009 | 1,628 | — | 1,634 | 1,592 | 2,380 | ** | 1,708 | 1,715 | 1,482 | — |
| Prescription Drug Expenditures | N/A | N/A | N/A | — | 872 | 872 | 865 | — | 866 | 867 | 859 | — |
| General Health | ||||||||||||
| Excellent | 16.0 | 16.1 | 14.9 | — | 14.5 | 14.6 | 13.0 | 14.3 | 14.2 | 16.4 | — | |
| Very good | 25.5 | 25.5 | 25.6 | — | 27.0 | 27.3 | 23.0 | * | 26.3 | 26.5 | 22.0 | — |
| Good | 29.2 | 29.3 | 28.5 | — | 32.0 | 32.3 | 27.5 | * | 32.9 | 33.0 | 32.4 | — |
| Fair | 18.8 | 18.6 | 20.2 | — | 18.2 | 17.8 | 23.9 | *** | 18.4 | 18.4 | 19.5 | — |
| Poor | 10.3 | 10.3 | 10.9 | — | 8.1 | 7.9 | 12.6 | *** | 7.9 | 7.9 | 9.7 | — |
| With ADL difficulties | ||||||||||||
| None | 67.8 | 67.8 | 67.2 | — | 72.4 | 72.4 | 72.6 | — | 72.9 | 72.8 | 74.9 | — |
| 1-2 | 21.3 | 21.4 | 20.6 | — | 18.8 | 18.8 | 17.1 | — | 18.1 | 18.2 | 16.8 | — |
| 3-4 | 7.0 | 6.9 | 7.5 | — | 5.7 | 5.6 | 6.2 | — | 5.6 | 5.6 | 6.3 | — |
| 5-6 | 4.0 | 3.9 | 4.7 | — | 3.1 | 3.0 | 4.1 | — | 3.3 | 3.3 | 2.0 | — |
| With IADL Difficulties | ||||||||||||
| None | 51.7 | 51.7 | 52.3 | — | 54.8 | 55.1 | 50.7 | * | 54.5 | 54.6 | 53.0 | — |
| 1-2 | 30.5 | 30.7 | 29.3 | — | 29.7 | 29.5 | 33.5 | — | 29.0 | 28.9 | 33.3 | — |
| 3-4 | 11.3 | 11.1 | 13.0 | — | 10.2 | 10.2 | 10.6 | — | 10.3 | 10.3 | 11.1 | — |
| 5-6 | 6.4 | 6.5 | 5.5 | — | 5.2 | 5.2 | 5.3 | — | 6.1 | 6.3 | 2.6 | ** |
p<0.1.
p<0.05.
p<0.01.
MCBS community, fee-for-service sample. Beneficiaries with end stage renal disease are excluded.
Diagnosis-based health status index computed from provider bills (claims). A higher hierarchical condition categories-diagnostic cost group (HCC-DCG) score indicates poorer health.
NOTES: MCBS is Medicare Current Beneficiary Survey. Data for second (third, fourth) year panel attrition analysis sample weighted by first (second, third) year nonresponse adjusted weights. ADLs are activities of daily living. IADLS are instrumental activities of daily living. Statistical testing between respondents and nonrespondents is equivalent to statistical testing between respondents and eligibles. Beneficiary characteristics are measured prior to the year in which response status is determined. NA is not available. A higher HCC-DCG score indicates poorer health.
SOURCE: RTI Analysis of the 1997-1999 MCBS.