Description

The WHO Performance Status Scale (WHOPS-5) is a clinical assessment tool designed to evaluate an individual’s functional status and ability to perform daily activities, particularly among patients with chronic or severe medical conditions, such as cancer.

The scale was developed by the World Health Organization (WHO) and consists of five levels (0–4), with each level representing a different degree of functional ability and independence.

Objective

The main objective of the WHOPS-5 is to provide a rapid and effective evaluation of a patient’s physical functioning in order to support clinical decision-making.

The scale is used to determine the suitability of specific therapeutic interventions, estimate disease prognosis, and identify whether adjustments in patient care are required according to the individual’s autonomy and ability to manage daily needs.

Structure and Content

The WHOPS-5 evaluates functional capacity through five performance levels:

Score 0 – Fully Active: The individual is capable of performing all daily activities without limitations.

Score 1 – Slightly Limited Activity: The individual can perform light activities but is restricted from more demanding tasks.

Score 2 – Moderately Limited Activity: The individual remains self-sufficient but cannot perform activities requiring significant physical effort.

Score 3 – Significantly Limited Activity: The individual can care for themselves but cannot perform other daily activities and spends most of the time in bed or a chair.

Score 4 – Completely Bedridden: The individual is unable to perform self-care and is entirely immobilized.

Scoring Method

The WHOPS-5 is scored from 0 to 4, with lower scores indicating better functional ability and greater independence.

Higher scores indicate increased functional limitations, reduced autonomy, and greater dependence on assistance for daily activities.

Data Analysis and Use

The WHOPS-5 is widely used in clinical practice and research to evaluate patients’ functional status and assist healthcare professionals in determining appropriate therapeutic approaches.

The information obtained from the scale can be used for:

Prognosis assessment, as functional status is associated with disease progression, outcomes, and response to treatment.

Quality of life assessment, by evaluating the impact of illness on daily functioning and overall patient well-being.

Evaluation of therapeutic outcomes, by identifying changes in functional condition following treatments or interventions.

Statistical analyses such as correlation analysis and survival analysis may be applied to examine relationships between functional status and other clinical parameters.

Calibration

The calibration of the WHOPS-5 is based on the clinical assessment of the patient’s functional ability by healthcare professionals or, where appropriate, by patient self-report.

The main psychometric characteristics include:

Reliability: The WHOPS-5 demonstrates good consistency when used by trained professionals, despite being based on clinical judgement.

Validity: The scale demonstrates satisfactory validity through significant correlations with other indicators of quality of life, prognosis, and survival outcomes.

Practicality: The instrument is simple and easy to administer, requiring only brief observation and evaluation of the patient’s condition.

Applications

The WHOPS-5 is widely applied in oncology, palliative care, chronic disease management, rehabilitation medicine, and clinical research.

It is particularly useful for evaluating treatment eligibility, monitoring disease progression, estimating prognosis, and assessing the impact of illness on patients’ independence and quality of life.

References

World Health Organization. (1979). Handbook for Reporting Results of Cancer Treatment. World Health Organization.

Oken, M. M., Creech, R. H., Tormey, D. C., Horton, J., Davis, T. E., McFadden, E. T., & Carbone, P. P. (1982). Toxicity and response criteria of the Eastern Cooperative Oncology Group. American Journal of Clinical Oncology, 5(6), 649–655.

Büntzel, J., Micke, O., Kisters, K., Bruns, F., & Mücke, R. (2012). Malnutrition and survival – bioimpedance measurements in head neck cancer patients. In Vivo, 26(1), 69–73.