Structured Abstract

1Detailed Explanation

Structured abstracts were introduced in the 1990s to improve the completeness and quality of abstracts in medical journals. Most major medical journals require structured abstracts, though the required sections vary: NEJM uses Background, Methods, Results, Conclusions; JAMA uses IMPORTANCE, OBJECTIVE, DESIGN, SETTING, PARTICIPANTS, RESULTS, CONCLUSIONS; Lancet uses Background, Methods, Findings, Interpretation. Abstracts typically have word limits (150-350 words). Structured abstracts improve readability, ensure completeness, and facilitate indexing in databases like PubMed. Key sections include background/rationale, methods (design, participants, intervention, outcomes), results (main findings with numbers), and conclusions (implications).

2Examples

• A.A NEJM abstract with Background, Methods, Results, Conclusions sections, each concisely summarizing the corresponding manuscript section
• B.A JAMA-style abstract including IMPORTANCE (why this matters) and OBJECTIVE (the research question)

3Why It Matters in Research

A well-written structured abstract is critical for conveying the study's essence. Many readers decide whether to read the full paper based solely on the abstract.

4Related Terms

Related Journal Format Guides

Journals that commonly use Structured Abstract in their manuscripts