Introduction
Malnutrition affects clinical outcomes in hospitalized patients; therefore,
clinicians and researchers need reliable screening tools. Consequently, the
Nutritional Risk Screening 2002 (NRS-2002) emerged as a leading instrument.
Developed by Jens Kondrup, Henrik H. Rasmussen, Ole Hamberg, Zeno Stanga, and
the Ad Hoc ESPEN Working Group and published in 2003, the NRS-2002 has
garnered over 4,800 citations in scientific literature. Moreover, it
demonstrates strong reliability and validity across diverse inpatient
populations.
Therefore, this article examines the NRS-2002’s core features, practical applications, and clinical value. Furthermore, it equips researchers and clinicians with actionable insights for nutritional risk assessment and improved patient care in hospital settings.
Key Features of the Nutritional Risk Screening 2002 (NRS-2002)
Purpose and Use
The primary purpose of the NRS-2002 is to identify hospitalized patients at risk of malnutrition Specifically, it evaluates critical indicators such as BMI, recent weight loss, and reduced dietary intake. By employing this tool, healthcare teams gain actionable data to prioritize clinical interventions, which ultimately leads to improved recovery outcomes. Regarding the target population, the NRS-2002 is designed for adults aged 18 years and older in medical, surgical, and critical care settings. However, experts do not recommend its use for pediatric populations.
Target Population
The NRS-2002 targets adults aged 18 years and older, including:
- Young adults (18–24 years)
- Middle-aged adults (25–44 years)
- Older adults (45–64 years)
- Seniors (65+ years)
Specifically, it applies to hospitalized adult patients in medical, surgical, and critical care settings. However, experts do not recommend it for pediatric or community populations.
Structure
Structurally, The NRS-2002 is consisting of two primary phases:
- Initial Screening: This involves a 4-item checklist:
- Is BMI < 20.5?
- Has there been recent weight loss?
- Has dietary intake decreased recently?
- Is the patient severely ill?
However, patients with no affirmative responses receive classification as “not at nutritional risk” and require weekly re-screening.
- Final Screening: If a patient triggers any “Yes” in the initial phase, clinicians then perform a deeper analysis of impaired nutritional status and disease severity, each rated on a scale of 0 to 3.
Scoring Method
Clinicians apply point-based scoring:
- Nutritional status (0–3): Evaluates weight loss, BMI, and intake
- Disease severity (0–3): Reflects stress metabolism and nutritional requirements
- Age ≥70 years (+1)
Additionally, the total score ranges from 0 to 7, with higher scores indicating greater nutritional risk.
Moreover, a cut-off of NRS-2002 ≥3 signals nutritional risk and recommends nutritional intervention. Subscale components remain ordinal, thereby enabling straightforward clinical interpretation and comparison across studies.
Administration Format
Unlike traditional self-report measures, the NRS-2002 is a clinician-administered tool. However, healthcare professionals administer the questionnaire via:
- Paper-based formats
- Digital platforms
- In-person interviews
However, the process typically takes less than 5 minutes, which makes it highly suitable for busy hospital environments and large-scale research.
Applications of the Nutritional Risk Screening 2002 (NRS-2002)
The NRS-2002 is utilized extensively within hospital settings to prioritize nutritional care:
- Screening: It acts as a rapid screening tool to identify hospitalized patients at risk of malnutrition upon admission.
- Weekly Re-screening: Patients who are initially classified as not at risk or who are currently hospitalized must undergo repeat weekly re-screening.
- Treatment Planning: Clinicians utilize the scoring results to identify patients who may benefit from immediate nutritional support and to guide nutritional intervention strategies.
- Research: The NRS-2002 is a highly valid instrument used in clinical research and trials to evaluate nutritional risk and the effectiveness of support protocols in medical and surgical inpatients.
Languages and availability
The NRS-2002 has been translated and used in multiple languages, including:
- Arabic
- English
- Mandarin Chinese
- Spanish
- French
- Russian
- German
- Portuguese
- Turkish
- Italian
Therefore, this wide availability enhances its utility in multicultural clinical settings and facilitates international research collaborations.
Reliability and Validity
The NRS-2002 qualifies as highly reliable and valid. Validation studies confirm its strong psychometric properties, including appropriate sensitivity and specificity for nutritional risk detection in hospitalized patients:
- The original validation study link
- Turkish validation study link
- Surgical validation study link
- Mexican oncology validation study link
- Post-stroke validation study link
Consequently, it supports both routine clinical use and rigorous research applications.
Limitations and Considerations
Despite its strengths, the NRS-2002 has a few limitations:
- Recall Bias: As the tool relies on information regarding recent weight loss and food intake, it may be subject to patient or caregiver recall inaccuracies.
Other Versions And Related Questionnaires
No shorter versions exist. However, the NRS-2002 complements other tools, such as:
- MUST (Malnutrition Universal Screening Tool): Better suited for primary care and outpatients.
- MNA (Mini Nutritional Assessment): Specifically designed for patients aged 65 and older.
- SGA (Subjective Global Assessment): Utilized for more in-depth nutritional diagnosis.
Additional Resources
- The original validation study link
- You can access the questionnaire as a PDF through this link
- For inquiries, contact ESPEN Guideline Office: guidelines-office@espen.org or visit the ESPEN Contact page
- A.S.P.E.N. Clinical Guidelines link
- NRS-2002 beyond screening link
- Comparison with other tools link
- Predictive mortality study link
Frequently Asked Questions (FAQ)
- Who can use the NRS-2002?
Clinicians, researchers, and healthcare providers use the NRS-2002 for hospitalized adult patients (aged 18 and older) including those in intensive therapy. - How long does it take to complete the NRS-2002?
Healthcare professionals typically take less than 5 minutes to complete the assessment, making it a highly efficient tool for acute care settings. - How is the NRS-2002 administered?
Healthcare teams can administer the questionnaire via paper-based forms, digital platforms, or through in-person clinical interviews. - Is there any cost to using the NRS-2002?
The NRS-2002 is free for routine clinical use and non-commercial academic research. However, formal permission may be required for reproduction or commercial redistribution.
A Word From ResRef about the Nutritional Risk Screening 2002 (NRS-2002)
Ultimately, NRS-2002 is one of the most robust and internationally accepted tools for identifying malnutrition risk. Because it offers rapid, evidence-based guidance, it remains an indispensable resource for clinicians striving to optimize nutritional intervention.
References
- Kondrup, J., Rasmussen, H. H., Hamberg, O., Stanga, Z., & Ad Hoc ESPEN Working Group. (2003). Nutritional risk screening (NRS 2002): A new method based on an analysis of controlled clinical trials. Clinical Nutrition, Volume 22, Issue 3, June 2003, Pages 321–336, Link
- Bolayir, B., Arik, G., Yeşil, Y., Kuyumcu, M. E., Varan, H. D., Kara, O., … & Halil, M. (2019). Validation of Nutritional Risk Screening-2002 in a large-scale Turkish population. Internal and Emergency Medicine, Volume 14, Issue 3, April 2019, Pages 431–437, Link
- Almeida, A. I., Correia, M., Camilo, M., & Ravasco, P. (2012). Nutritional risk screening in surgery: Valid, feasible, easy! Clinical Nutrition, Volume 31, Issue 2, April 2012, Pages 206–211, Link
- Fuchs-Tarlovsky, V., Zayas, G., & Gutierrez-Salmean, G. (2014). Nutritional risk screening in Mexican oncology patients. Nutrición Hospitalaria, Volume 29, Issue 2, February 2014, Pages 387–391, Link
- Emanuelsson, B. K., Gabre, P., & Ek, A. C. (2012). Nutritional screening of stroke patients: Validity of the Nutritional Risk Screening (NRS 2002) tool. Scandinavian Journal of Caring Sciences, Volume 26, Issue 4, December 2012, Pages 800–806, Link
- Mueller, C., Compher, C., Ellen, D. M., & American Society for Parenteral and Enteral Nutrition (A.S.P.E.N.) Board of Directors. (2011). A.S.P.E.N. clinical guidelines: Nutrition screening, assessment, and intervention in adults. Journal of Parenteral and Enteral Nutrition, Volume 35, Issue 1, January 2011, Pages 16–24, Link
- Reber, E., Gomes, F., Vasiloglou, M. F., Schuetz, P., & Stanga, Z. (2019). Nutritional Risk Screening 2002 (NRS 2002) – A generic 24-hour screening tool. Nutrients, Volume 11, Issue 12, December 2019, Page 2919, Link
- Kyle, U. G., Kossovsky, M. P., Karsegard, V. L., & Pichard, C. (2006). Comparison of tools for nutritional assessment and screening at hospital admission: A population study. Clinical Nutrition, Volume 25, Issue 3, June 2006, Pages 409–417, Link
- Sorensen, J., Kondrup, J., Prokopowicz, J., Schiesser, M., Krähenbühl, L., Meier, R., & Liberda, M. (2008). EuroOOPS: An international, multicentre study to implement nutritional risk screening and evaluate clinical outcome. Clinical Nutrition, Volume 27, Issue 3, June 2008, Pages 340–349, Link
