The use of comparability ratios to adjust hospital trend data. | Zendy

S C Gee | Zendy; William F. Page | Zendy

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The use of comparability ratios to adjust hospital trend data.

Author(s) -

S C Gee,

William F. Page

Publication year - 1985

Publication title -

american journal of public health

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.284

H-Index - 264

eISSN - 1541-0048

pISSN - 0090-0036

DOI - 10.2105/ajph.75.1.81

Subject(s) - comparability , medicine , medical diagnosis , coding (social sciences) , statistics , trend analysis , demography , mathematics , pathology , combinatorics , sociology

Hospital trend data may be affected by changes in diagnostic coding schemes. We studied the change from ICDA-8 (I-8) to ICD-9-CM (I-9) in a sample of roughly 13,600 double-coded Veterans Administration hospital diagnoses. Comparability ratios were computed and used to adjust trend data which overlap the time period when the shift from I-8 to I-9 occurred. With this adjustment for change in diagnostic coding scheme, apparent diagnostic trends are substantially altered.

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