| Verified against primary record | |
| Definition | An individual’s perception of their position in life in the context of their culture and value systems[1] |
|---|---|
| What patient-reported means | A report coming directly from the patient, without interpretation by a clinician or anyone else[2] |
| One regulator’s preferred measure | The EQ-5D, valued on public preferences from a representative national sample[3] |
| Records read | Two definitional authorities, a regulator’s manual, two statistical releases, an archived agency page and a Commission evaluation, 9 October 2026 |
| Independently reported | |
| Cost of collecting it at home | Roughly a quarter of procedures yield a usable pair of questionnaires in one funded national programme[4] |
| Bands apply only to the rows beneath them. No quality of life figure for patients treated abroad is published, because none was located. | |
Quality of life after treatment abroad is the outcome patients care about most and the one on which there is least evidence. Health-related quality of life is a mature measured construct with validated instruments and a national collection programme behind it in several countries. Searches for this entry did not surface a single study applying such an instrument to patients who travelled abroad for treatment.
What is being measured
The World Health Organization defines quality of life as an individual’s perception of their position in life in the context of the culture and value systems in which they live, in relation to their goals, expectations, standards and concerns. Its own instrument was developed with fifteen international field centres simultaneously, with the aim of an assessment applicable cross-culturally.[1]
Two features of that definition matter here. It is explicitly a perception, so only the patient can supply it. And it is framed relative to the person’s own culture and expectations, which is why cross-cultural validation of an instrument is a technical requirement rather than a courtesy. The page carrying this definition shows no publication date and attributes the wording to a 2021 glossary.
The strict sense of a patient-reported measure is set by medical product regulators: a report of the status of a patient’s health condition that comes directly from the patient, without interpretation of the patient’s response by a clinician or anyone else.[2] A surgeon’s judgement that a patient is doing well is not a quality of life measurement.
What a usable instrument has to prove
An instrument earns its use through documented measurement properties. Content validity is supported by evidence from qualitative studies that the items and domains of an instrument are appropriate and comprehensive relative to its intended measurement concept, population and use. Beyond that, regulators review reliability, construct validity and the ability to detect change, including evidence that the instrument is equally sensitive to gains and losses. And testing other measurement properties will not replace or rectify problems with content validity.[2]
Some national bodies go further and name the instrument. One health technology regulator states that the EQ-5D is the preferred measure of health-related quality of life in adults and that valuation should be based on a valuation of public preferences from a representative sample of the national population. Departing from it requires qualitative empirical evidence on the lack of content validity for that instrument, derived from a synthesis of peer-reviewed literature.[3]
That last requirement has a consequence for international comparison which is rarely noticed. If the values attached to health states come from one country’s public preferences, a score produced with those values is not straightforwardly transferable to a patient from another country.
What it costs to collect, even when funded and mandated
England runs the largest routine collection of health-related quality of life after surgery. It uses condition-specific instruments, the Oxford Hip Score and the Oxford Knee Score, together with the generic EQ-5D index and a visual analogue scale, administered both before and after surgery, in order to assess the outcomes of the surgical procedures based on patients’ self-reported health.[5]
The attrition is instructive. For hip replacement in one year the programme reported a headline participation rate of 70.1 per cent, a post-operative return rate of 63.1 per cent and a linkage rate of 58.0 per cent; for knee replacement, participation of 68.3 per cent and a post-operative return rate of 59.4 per cent.[4] Roughly a quarter of procedures end with both questionnaires completed and linked. That is the cost of collecting this outcome inside a single-payer system, in patients’ own country, with the collection built into the care pathway.
The programme’s eligibility is the reason none of this reaches medical travel. It covers patients undergoing elective inpatient surgery for hip and knee replacement funded by the English health service, identified by linkage to the national hospital episode data.[4] A patient who pays privately abroad generates no episode to link to and is offered no pre-operative questionnaire, so no baseline exists against which any later score could be compared.
Other ways it is measured, and the cross-border gap
Population-level measurement takes a lighter form. One public health agency uses a set of questions it calls healthy days measures, asking how many days during the past 30 days a person’s physical health was not good and how many days their mental health was not good, estimating the number of recent days when health was good or better.[6] The page carrying this is an archived copy and is cited as such.
At cross-border level the position is recorded in the European Commission’s own evaluation of its cross-border healthcare directive, which states that no quantitative data are available on the continuity of care between member states after cross-border treatment.[7] Continuity of care is the route by which a post-treatment quality of life measurement would be obtained.
Two targeted searches for quality of life measurement in patients who travelled abroad for treatment returned only surgical-mission and outreach studies and conceptual essays. No study using a validated instrument in a medical travel cohort was located. That is a search result and not proof that none exists, but it is the central absence this entry records.
See also
- Patient-reported outcome measures, the programme described here in detail
- Clinical outcomes in medical tourism, the clinician-measured counterpart
- Patient satisfaction in medical tourism, what is collected instead
- Patient attrition in medical tourism studies, why paired questionnaires are hard
References
- World Health Organization. WHOQOL, measuring quality of life. Undated on the page; the wording is attributed there to the organisation’s health promotion glossary of terms, 2021. Verified against primary record: definition and instrument development read. Retrieved 9 October 2026.
- United States Food and Drug Administration. Patient-reported outcome measures, use in medical product development to support labeling claims. December 2009. Verified against primary record: definition and measurement property sections read. Retrieved 9 October 2026.
- National Institute for Health and Care Excellence. Technology appraisal and highly specialised technologies guidance, the manual, economic evaluation section. Process and methods PMG36, first published 31 January 2022, last updated 31 March 2026. Verified against primary record: preferred measure and departure conditions read. Retrieved 9 October 2026.
- NHS England Digital. Finalised PROMs, hip and knee replacement procedures, April 2021 to March 2022, patient engagement. Published 13 July 2023. Verified against primary record: participation, return and linkage rates and eligibility wording read. Retrieved 9 October 2026.
- NHS England Digital. Patient Reported Outcome Measures in England, programme introduction. Verified against primary record: instrument list and stated purpose read. Retrieved 9 October 2026.
- United States Centers for Disease Control and Prevention. Health-related quality of life methods and measures. Archived page, last reviewed 31 October 2018. Verified against primary record: archived agency page opened and read. Retrieved 9 October 2026.
- Tetra Tech International Development, empirica and Asterisk Research and Analysis, for the European Commission Directorate-General for Health and Food Safety. Study supporting the evaluation of Directive 2011/24/EU, final report annexes. January 2022. Verified against primary record: continuity of care finding read in the annexes. Retrieved 9 October 2026.
Sourcing note: the two definitional authorities, the regulator’s manual, the two statistical releases, the archived agency page and the Commission evaluation annexes were opened and read on 9 October 2026. No quality of life figure for patients treated abroad appears in this entry because no study measuring it with a validated instrument in such a cohort was located, and that is stated as the result of searching rather than as proof that none exists. The organisation’s definition page carries no publication date and is cited undated with a retrieval date; the public health agency page is an archive copy and is labelled so.