ASSESSMENT OF OVERALL DATA QUALITY AND COMPLETENESS

*OREGON* 1999 TABLES

Nine tables for each State show the use of mental health and other
services by Medicaid beneficiaries with mental health diagnoses in 1999.
Enrollment and claims data from the Medicaid Analytic eXtract (MAX)
files from the Centers for Medicare & Medicaid Services (CMS) are the
source for these analyses. Because Medicaid programs differ across the
States, and because administrative data vary in completeness and
quality, caveats about the State's data should be considered in
interpreting the information contained in these tables.

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  **Oregon Data Comments**
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  **Diagnosis Codes:** Diagnosis coding on claims was relatively
  complete, with no known quality problems.

  **Long-term Care:** There were no crossover long-term-care claims, so
  total expenditures are slightly understated.

  **Eligibility Group:** A very small number of individuals
  (approximately 250) were reported to an invalid eligibility group;
  these individuals are not included in sections of tables that report on
  eligibility group (e.g., disabled, adult, child).

  **Inpatient Days:** Oregon's inpatient crossover claims rarely included
  covered days. This causes inpatient hospital stays for groups of
  Medicaid beneficiaries that include a high proportion of dual eligibles
  (most aged and many disabled beneficiaries) to average "0" days in
  length, and explains the other low numbers that appear for some groups
  on Table 4.
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+----------------------+--------+-------+----------+--------+---------+
| **Percent of         |        |       |          |        |         |
| Beneficiaries        |        |       |          |        |         |
| Excluded in Oregon   |        |       |          |        |         |
| Eligibility Group**  |        |       |          |        |         |
+----------------------+--------+-------+----------+--------+---------+
|                      | *      | **A   | **Di     | **A    | **Chi   |
|                      | *All** | ged** | sabled** | dult** | ldren** |
+----------------------+--------+-------+----------+--------+---------+
| **Beneficiaries**    | 443977 | 63123 | 72612    | 62170  | 246072  |
|                      |        |       |          |        |         |
| **Included**         |        |       |          |        |         |
+----------------------+--------+-------+----------+--------+---------+
| **Beneficiaries**    | 242130 | 17610 | 16407    | 107581 | 100532  |
|                      |        |       |          |        |         |
| **Excluded Because** |        |       |          |        |         |
|                      |        |       |          |        |         |
| **of Managed Care**  |        |       |          |        |         |
+----------------------+--------+-------+----------+--------+---------+
| **Percent of**       | 55%    | 57%   | 72%      | 49%    | 57%     |
|                      |        |       |          |        |         |
| **Beneficiaries**    |        |       |          |        |         |
|                      |        |       |          |        |         |
| **Excluded Because   |        |       |          |        |         |
| of**                 |        |       |          |        |         |
|                      |        |       |          |        |         |
| **Managed Care**     |        |       |          |        |         |
+----------------------+--------+-------+----------+--------+---------+