PMID: 11310194Apr 20, 2001Paper

The effect of nonsteroidal anti-inflammatory drugs on the use of gastroprotective medication in people with arthritis

The American Journal of Managed Care
K L LapaneD Pettitt

Abstract

To estimate the incidence of gastroprotective medication use among users and nonusers of prescription nonsteroidal anti-inflammatory drugs (NSAIDs) who have arthritis. A retrospective cohort study. We used the Protocare Sciences proprietary Managed Care Organization database, which contains data on more than 3 million lives, to identify 57,136 patients given an initial diagnosis of osteoarthritis (OA; International Classification of Disease, Ninth Revision, Clinical Modification [ICD-9-CM] codes: 715, 721.0, 721.3, or 721.9) or rheumatoid arthritis (RA; ICD-9-CM codes: 714.0, 714.1, 714.2, or 714.9); the diagnoses were made during inpatient or outpatient medical encounters occurring between October 1, 1993, and September 30, 1997. The duration of therapy was calculated as the sum of the total number of days of receipt of all prescriptions during the year. The prescribed daily dose was determined by multiplying the drug dose by the number of pills dispensed and the dividing the product by the number of days supplied, as noted in the pharmacy records. During the year after NSAID initiation, 27% of people with RA and 12% of those with OA were chronic NSAID users. NSAID users with RA were 4 times as likely as NSAID nonusers with RA...Continue Reading

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