| OHI | Occupational Health Institute; operative hypertension indicator; oral hygiene index; Oral Hygiene In... |
|---|---|
| ACTG | AIDS Clinical Trial Group |
| AIRE | Acute Infarction Ramipril Efficacy [trial] |
| ALLHAT | Antihypertensive and Lipid Lowering Treatment to Prevent Heart Attack Trial |
| BCPT | breast cancer prevention trial |