Special considerations are necessary when prescribing medicines in special populations, such as children, the elderly, pregnant and breastfeeding women, and patients with renal (kidney) or hepatic (liver) impairment.
Some groups within the general population of a clinical study may require special study, due to the particular risks, benefits, or treatment requirements associated with them
Small populations present ethical and practical challenges to organising clinical trials. Small populations include groups with rare diseases or specific sub-types of common diseases, children, and the elderly.
