The cost-effectiveness of misoprostol for nonsteroidal antiinflammatory drug-associated adverse gastrointestinal events.
OBJECTIVE
To compare, in a Canadian health care setting, the costs and consequences of 3 strategies of misoprostol prophylaxis for osteoarthritis patients: prophylaxis for all patients taking nonsteroidal antiinflammatory drugs (NSAIDs), for no patients taking NSAIDs, and for only elderly patients (age > or = 60) taking NSAIDs.


METHODS
We designed a decision-analysis model which incorporated costs (estimated with ulcer patient profiles and medical records), review, and probabilities (estimated from a companion meta-analysis, selected literature review, and Ontario Ministry of Health Statistics). Effectiveness was defined as the number of episodes of gastric ulceration requiring hospitalization or outpatient management that were averted by each strategy.


RESULTS
On average, prophylaxis cost an additional $650 for every additional gastrointestinal event prevented. Prophylaxis for elderly NSAID users was cost saving if the ulcer complication rate in this group exceeds 1.2%, or if either the charges for outpatient ulcer treatment exceed $2,000, or the 3-month price of misoprostol is < or = $90.


CONCLUSIONS
Our results demonstrate that, in this setting, misoprostol prophylaxis may be highly cost effective.
Gabriel
S E
SE
Department of Health Sciences Research, Mayo Clinic, Rochester, MN 55905.
Jaakkimainen
R L
RL
Bombardier
C
C
D000368:Aged; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects*; D002170:Canada; D003362:Cost-Benefit Analysis; D003365:Costs and Cost Analysis; D003658:Decision Making, Computer-Assisted; D006801:Humans; D008875:Middle Aged; D016595:Misoprostol / Q000191:economics / Q000627:therapeutic use*; D010437:Peptic Ulcer / Q000139:chemically induced / Q000517:prevention & control*
D000894:Anti-Inflammatory Agents, Non-Steroidal; D016595:Misoprostol