McGill Quality of Life Questionnaire
McGill Quality of Life Questionnaire (MQOL) · Also known as: MQOL
The McGill Quality of Life Questionnaire (MQOL) is a 17-item, multidimensional self-report measure specifically developed for people with advanced cancer and other life-limiting illnesses. Created by Cohen, Mount, and colleagues at McGill University in 1995, the MQOL captures physical, functional, emotional, spiritual, and social dimensions of quality of life in a concise, patient-centered format. It has become a standard outcome measure in palliative care research, hospice quality improvement, and cancer centers internationally.
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When to use it
The MQOL is indicated for all patients with advanced cancer and other progressive life-limiting illnesses receiving palliative or hospice care. Use at baseline (initial palliative care consultation) to identify most distressed domains and guide comprehensive care planning. Re-administer weekly during inpatient stays or monthly in outpatient/hospice settings. Use before and after interventions (pain management, depression treatment, spiritual care, family sessions, legacy projects) to evaluate effectiveness. Especially valuable in research on palliative care quality-of-life outcomes, comparative effectiveness of care models, and impact of advance care planning on subjective well-being. Less suitable for patients with severe cognitive impairment (dementia, delirium, altered consciousness) unless proxy response is explicitly allowed by protocol; otherwise, clinician observation of comfort and engagement may substitute.
Strengths & limitations
- Explicitly designed for advanced cancer and palliative populations: Unlike generic QoL measures, every domain reflects priorities advanced cancer patients identify as important.
- Multidimensional yet concise: 17 items capture physical, emotional, spiritual, and social domains without the burden of 50+ item questionnaires; feasible for fatigued, seriously ill patients.
- Actionable subscales: Each subscale directly corresponds to a clinical intervention (pain management, psychiatric support, spiritual care, social work), enabling targeted responses.
- Strong psychometric properties: Cronbach's α = 0.84–0.88 (total); test–retest reliability r = 0.83–0.90 over 1 week; responsiveness to change in clinical trials.
- Extensively validated in palliative care research: Used in major RCTs on early palliative care, advance care planning, and hospice outcomes; enables robust comparison across studies.
- Mixed response format (VAS + Likert) increases cognitive load and scoring complexity compared to uniform scales; prone to administration errors if instructions are unclear.
- VAS measurement requires careful training; marking must be measured in centimeters using a ruler, introducing measurement error and inconsistency if transcribed verbally without visual confirmation.
- Moderate floor/ceiling effects: Some advanced patients score uniformly low (1–2) across all domains if overwhelmed; high-scoring patients (8–9) may plateau despite intervention, reducing sensitivity to improvement.
- Self-report only: Patients with delirium, severe depression, or altered consciousness may provide unreliable responses; no observer-rated or proxy version for completely non-communicative patients.
- Limited predictive value for survival or prognosis: MQOL measures subjective well-being, not prognostic factors; low scores do not predict imminent death or guide timing of transitions in care intensity.
Frequently asked
Is a low Physical Symptoms score the same as 'uncontrolled symptoms'?
Not exactly. The Physical Symptoms subscale is a single VAS item: 'Are you free of pain?' It captures freedom from pain specifically, not all symptoms. A low score (e.g., 3/10) indicates pain distress; however, dyspnea, fatigue, nausea, or other symptoms are not directly measured. Always supplement MQOL with a comprehensive symptom assessment (e.g., Edmonton Symptom Assessment System) to guide pain and symptom management.
How do I score the VAS items correctly?
The patient marks a vertical line on a 10 cm horizontal VAS anchored by 'worst possible' on the left and 'best possible' on the right. Measure the distance from the left edge to the patient's mark using a ruler in centimeters (e.g., 6.5 cm = score 6.5/10). Some versions use 100 mm rulers; divide by 10 to get a 0–10 score. Digital or app-based versions auto-calculate from the patient's touch mark. Consistency in measurement method is critical for valid scoring.
Can I use MQOL for patients with dementia or severe cognitive impairment?
Not routinely as self-report. Patients with advanced dementia cannot reliably rate their own QoL via MQOL. However, clinician observation of comfort (facial expression, body position, engagement, verbal content, restlessness) can supplement MQOL data in cognitively intact patients. A separate proxy version does not exist; do not ask family members to rate the patient's 'emotional well-being'—it reflects observer bias, not the patient's experience.
Should I administer MQOL when a patient is in acute distress (severe pain, delirium, dyspnea)?
No. Defer MQOL until the acute crisis is stabilized. Scores during acute distress are not representative of baseline QoL and may not change meaningfully as distress resolves. Once symptoms are managed, administer MQOL as a baseline and then at regular intervals (weekly to monthly) to track longer-term well-being.
Sources
- Cohen, S. R., Mount, B. M., Strobel, M. G., & Bui, F. (1995). The McGill Quality of Life Questionnaire: a measure of quality of life appropriate for people facing advanced cancer. Journal of Palliative Care, 11(3), 6–15. link ↗
- Mount, B. M., Kearney, M., Cohen, S. R., Bui, F., & Strobel, M. G. (2007). The McGill Quality of Life Questionnaire: revised format. Journal of Palliative Medicine, 10(1), 167–172. link ↗
How to cite this page
ScholarGate. (2026, June 3). McGill Quality of Life Questionnaire (MQOL). ScholarGate. https://scholargate.app/en/palliative-care/mcgill-quality-of-life
Which method?
Set this method beside its closest kin and read them side by side — the library lays the books on the table; the choice is yours.
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