Systematic reviews should be:

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When evaluating statements about systematic reviews, it helps to unpack what makes them distinct from other types of reviews and what their methodological goals are.
Option a: 'have a broad research question' — While systematic reviews can cover wide topics, the hallmark is not simply breadth but a focused, answerable question defined a priori. A broad question can actually hinder the ability to synthesize evidence systematically and may compromise clarity and reproducibility.
Option b: 'quick to carry out' — Systematic reviews are typically time- and resource-intensive because they involve comprehensive literature searching, screening many records, risk of bias assessment, and possible meta-analysis. Therefore, they are not designed to be quick; this statement misrepresents the meticulous nature of the process.
Option c: 'aim to include all studies on a topic' — This captures a central aim of systematic reviews: to identify and include all relevant studies that meet predefined criteria to minimize selection bias and produce a comprehensive synthesis. The exhaustive search and explicit inclusion criteria are key features.
Option d: 'only used for randomised controlled study designs' — Systematic reviews can synthesize various study designs depending on the question and available evidence (e.g., observational studies, diagnostic accuracy studies). They are not restricted to randomized controlled trials alone, though RCTs are often prioritized when appropriate. This statement is too narrow and inaccurate as a universal rule.

In summary, the statements contrast breadth versus focus, speed versus thoroughness, completeness versus partiality, and study design restrictions. Understanding these distinctions helps clarify why the defining characteristic of a systematic review is the comprehensive, transparent search and inclusion of all relevant evidence that meets predefined criteria, rather than an emphasis on speed, overly broad questions, or restricting to a single study design.

7PALMSYS 24~25 TERM2 000001 SYSTEMATIC REVI Section 1 - Quiz Link

Systematic reviews should be:

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