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| | A research study in which the medical records of groups of individuals who are alike in many ways but differ by a certain characteristic (for example, female nurses who smoke and those who do not smoke) are compared for a particular outcome (such as lung cancer). Also called a historic cohort study. |
| Previous Definitions: | retinyl palmitate, retromolar trigone, retroperitoneal, retropubic prostatectomy, retrospective | | Next Definitions: | retrospective study, retroviral vector, retrovirus, reverse transcription, ReVia |
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