| ABPI | Association of the British Pharmaceutical Industry. UK pharmaceutical industry body whose Code of Practice governs promotional materials. |
| AE | Adverse event. Any undesirable medical occurrence in a patient during a clinical trial, whether or not it is related to the treatment. |
| CI | Confidence interval. A range of values within which the true treatment effect is expected to fall (e.g., 95% CI: 0.52–0.84). |
| CSR | Clinical study report. The comprehensive report of a clinical trial, including methods, results, and analysis. Primary source document for many medical writing deliverables. |
| EU CTR | EU Clinical Trials Regulation. Requires sponsors to publish lay-friendly summaries of trial results. |
| Fair balance | Regulatory requirement that promotional materials present both benefits and risks of a treatment in a balanced manner. |
| HCP | Healthcare professional. Includes physicians, nurses, pharmacists, and other qualified practitioners. |
| HR | Hazard ratio. A measure of relative risk over time, commonly used in survival analysis (e.g., HR 0.67 means 33% risk reduction). |
| IFPMA | International Federation of Pharmaceutical Manufacturers & Associations. Global industry body with a Code of Practice for marketing. |
| IMRAD | Introduction, Methods, Results, and Discussion. Standard structure for scientific manuscripts. |
| ITT | Intention-to-treat. Analysis that includes all randomised participants regardless of whether they completed the study. The primary analysis in most RCTs. |
| KOL | Key opinion leader. A recognised expert in a therapeutic area, often engaged for advisory boards and speaker programmes. |
| mITT | Modified intention-to-treat. A variation of ITT that excludes certain participants (e.g., those who never received treatment). Definition varies by study. |
| MLR | Medical, Legal, Regulatory review. The formal review process for promotional and medical content before external use. |
| NMA | Network meta-analysis. A statistical method for comparing multiple treatments indirectly through a network of studies. |
| OCR | Optical character recognition. Converts scanned document images to searchable text. Poor OCR quality can cause errors in automated reference checking. |
| OR | Odds ratio. A measure of association between an exposure and an outcome (e.g., OR 1.5 means 50% higher odds). |
| PI | Prescribing information. The approved product labelling. See also SmPC (EU) and USPI (US). |
| PLS | Plain language summary. A lay-friendly summary of clinical trial results, increasingly required by regulation. |
| PP | Per-protocol. Analysis that includes only participants who completed the study as planned, without major protocol deviations. |
| QC | Quality control. The review and verification process applied to deliverables before submission or publication. |
| RCT | Randomised controlled trial. A study design where participants are randomly assigned to treatment or control groups. |
| SAE | Serious adverse event. An AE that results in death, hospitalisation, disability, or is otherwise medically significant. |
| SLR | Systematic literature review. A structured, reproducible search and analysis of published evidence, following a predefined protocol. |
| SmPC | Summary of Product Characteristics. The EU equivalent of prescribing information. Approved by the EMA or national authority. |
| SOP | Standard operating procedure. Documented internal processes that define how work is conducted within an organisation. |
| USPI | United States Prescribing Information. The FDA-approved product labelling. |