Consumer Health Information Quality and Evaluation

Consumer health information quality and evaluation concerns whether the health information that patients and the public find, especially online, is accurate, complete, balanced, and trustworthy, and how that quality can be appraised. Because anyone can publish health content and people increasingly turn to the Internet for it, the field develops and applies instruments and criteria for judging the reliability of consumer health information and for identifying misinformation.

Definition

Consumer health information quality refers to the degree to which health information intended for the public is accurate, current, complete, balanced, transparent about its sources and authorship, and appropriate to its audience; evaluation is the systematic appraisal of that information against explicit quality criteria or instruments.

Scope

This entry covers the dimensions of information quality, instruments and frameworks used to evaluate consumer health information, the empirical findings on the quality of online health content, and the problem of health misinformation. It is a methodological and educational overview within consumer health informatics and does not certify or rate specific sources.

Core questions

• What dimensions define the quality of consumer health information?
• What instruments and criteria are used to evaluate that information?
• How good is the health information that consumers actually find online?
• How can low-quality information and health misinformation be identified and addressed?

Key concepts

• Accuracy and completeness
• Transparency of authorship and sources
• Balance and currency
• DISCERN and quality instruments
• Readability and audience appropriateness
• Health misinformation
• Credibility and trust cues

Mechanisms

Evaluation of consumer health information proceeds by specifying quality dimensions, such as accuracy, completeness, transparency, and balance, and then applying explicit criteria or validated instruments to content. Instruments like DISCERN provide structured questions for judging written information on treatment choices, while systematic reviews aggregate empirical assessments across many sites to characterise overall quality. Because quality is multidimensional, a source may score well on one dimension, such as readability, yet poorly on another, such as accuracy, so evaluation frameworks aim to make these trade-offs explicit rather than reducing quality to a single label.

Clinical relevance

Patients increasingly bring information found online into their decisions and conversations with clinicians, so the quality of that information affects understanding and trust. Knowing how consumer health information is appraised helps in interpreting what people read and in recognising unreliable content. This entry is descriptive; it does not evaluate any specific website or provide medical advice.

Evidence & guidelines

A systematic review of empirical studies assessing online consumer health information concluded that quality is a frequent problem and that studies used widely varying methods and criteria, making cross-study comparison difficult. The DISCERN instrument provides a validated, reproducible approach for judging written information on treatment choices. Foundational accounts of consumer health informatics frame information quality and the trustworthiness of online content as central concerns of the field.

History

Concern about the quality of consumer health information grew sharply in the late 1990s as the Web made vast amounts of unvetted health content available to the public. Instruments such as DISCERN (1999) and quality labels and codes of conduct were developed to help users and publishers judge reliability, and Eysenbach and colleagues' 2002 systematic review brought together the empirical evidence on online health information quality. The rise of social media later sharpened attention to health misinformation at scale.

Debates

How should consumer health information quality be measured?

Studies use many different quality criteria and instruments, and there is no single agreed standard, so findings about how good online health information is depend heavily on which dimensions and methods are chosen.

Key figures

• Gunther Eysenbach
• Deborah Charnock
• Sasha Shepperd

Seminal works

• eysenbach-2002
• charnock-1999

Frequently asked questions

What is DISCERN?

DISCERN is a validated instrument of structured questions for judging the quality of written consumer health information on treatment choices, assessing aspects such as the reliability of the publication and the quality of information about treatment options.

Why is the quality of online health information hard to assess?

Quality has several dimensions and there is no universally agreed standard or instrument, so different studies reach different conclusions depending on the criteria and methods they apply.