Health-related quality of life (HRQOL) measurement MCQs With Answer
This collection of MCQs is designed for M.Pharm students to deepen understanding of health-related quality of life (HRQOL) measurement in pharmacoepidemiology and pharmacoeconomics. Questions cover conceptual foundations, instrument selection (generic vs disease-specific), psychometric properties (reliability, validity, responsiveness), utility measurement and QALYs, administration issues, cross-cultural adaptation, and modern measurement theories (CTT, IRT/Rasch). Each item focuses on applied knowledge needed to evaluate, select, interpret, and use HRQOL instruments in clinical trials, observational studies, and economic evaluations. Answers are provided to facilitate self-assessment and exam preparation.
Q1. Which statement best describes health-related quality of life (HRQOL) measurement?
- Objective clinical indices such as blood pressure and lab values that summarize health
- Measures of the economic burden of disease including direct and indirect costs
- Subjective assessment of the impact of disease and its treatment on physical, mental and social well-being
- Global mortality rates adjusted for age and sex
Correct Answer: Subjective assessment of the impact of disease and its treatment on physical, mental and social well-being
Q2. Which is a correct distinction between generic and disease-specific HRQOL instruments?
- Generic instruments are developed only for a single disease while disease-specific instruments cover many conditions
- Generic instruments are more sensitive to small changes in a particular disease than disease-specific instruments
- Generic instruments allow cross-disease comparisons whereas disease-specific instruments provide greater clinical sensitivity for one condition
- There is no practical difference; both provide identical information in all contexts
Correct Answer: Generic instruments allow cross-disease comparisons whereas disease-specific instruments provide greater clinical sensitivity for one condition
Q3. Which psychometric property is assessed by Cronbach’s alpha?
- Test–retest reliability over time
- Internal consistency of items within a scale
- Construct validity compared to a gold standard
- Responsiveness to clinical change
Correct Answer: Internal consistency of items within a scale
Q4. Which approach estimates health state utilities directly from patient preferences?
- Standard gamble and time trade-off
- SF-36 domain scoring
- Principal component analysis
- Internal consistency analysis
Correct Answer: Standard gamble and time trade-off
Q5. Which instrument is a commonly used generic HRQOL questionnaire with 36 items?
- EQ-5D
- SF-36
- AQLQ (Asthma Quality of Life Questionnaire)
- KDQOL (Kidney Disease Quality of Life)
Correct Answer: SF-36
Q6. Which characteristic describes a ceiling effect in HRQOL measurement?
- Many respondents score at the lower extreme limiting ability to detect deterioration
- Many respondents score at the upper extreme limiting ability to detect improvement
- Random response patterns across items producing low reliability
- Systematic bias introduced by interviewer administration
Correct Answer: Many respondents score at the upper extreme limiting ability to detect improvement
Q7. Which validity type is demonstrated when an HRQOL instrument correlates as expected with related clinical measures?
- Content validity
- Face validity
- Construct validity
- Criterion validity
Correct Answer: Construct validity
Q8. What does minimal clinically important difference (MCID) represent?
- The smallest statistically significant change detectable by an instrument
- The smallest change in score perceived as beneficial or harmful by patients that would lead to a change in management
- The maximum possible score difference between two populations
- The average baseline score in a healthy reference sample
Correct Answer: The smallest change in score perceived as beneficial or harmful by patients that would lead to a change in management
Q9. Which metric is commonly used to quantify responsiveness of an HRQOL instrument?
- Internal consistency coefficient (Cronbach’s alpha)
- Effect size or standardized response mean (SRM)
- Cross-sectional correlation with demographic variables
- Number of missing items per respondent
Correct Answer: Effect size or standardized response mean (SRM)
Q10. Which step is essential in cross-cultural adaptation of an HRQOL questionnaire?
- Translation only by a single translator
- Back-translation and cognitive debriefing with target population
- Replacing items with local clinical measures without testing
- Administering the original language version regardless of literacy
Correct Answer: Back-translation and cognitive debriefing with target population
Q11. Which statement about preference-based measures like EQ-5D is true?
- They do not produce utility weights and cannot be used to compute QALYs
- They generate a health state profile that can be converted into a single index utility value
- They are disease-specific and unsuitable for economic evaluations
- They always require direct elicitation from each study participant using time trade-off
Correct Answer: They generate a health state profile that can be converted into a single index utility value
Q12. Which administration mode may introduce interviewer bias but can improve completion in low-literacy populations?
- Self-administered postal questionnaire
- Computer adaptive testing only
- Interviewer-administered face-to-face questionnaire
- Automated telephone IVR without assistance
Correct Answer: Interviewer-administered face-to-face questionnaire
Q13. What is the primary advantage of item response theory (IRT) or Rasch analysis over classical test theory (CTT) in HRQOL measurement?
- IRT assumes equal item difficulty and so simplifies scoring
- IRT provides item-level parameters and supports cross-sample invariant measurement and computerized adaptive testing
- CTT allows for shorter instruments with fewer items than IRT
- IRT eliminates the need for validation studies
Correct Answer: IRT provides item-level parameters and supports cross-sample invariant measurement and computerized adaptive testing
Q14. Which problem is best addressed by using proxy respondents for HRQOL?
- When patients are fully literate and can self-report
- When the instrument has demonstrated perfect reliability
- When patients are too young or too cognitively impaired to self-report
- When interviewer cost must be minimized
Correct Answer: When patients are too young or too cognitively impaired to self-report
Q15. Which approach is appropriate for handling occasional missing item responses within a validated multi-item HRQOL domain?
- Exclude the entire study from analysis
- Use single imputation with the item mean only when missingness is extensive
- Follow instrument-specific scoring rules, e.g., prorate domain scores if allowed
- Replace missing items with the worst possible score to be conservative
Correct Answer: Follow instrument-specific scoring rules, e.g., prorate domain scores if allowed
Q16. Which concept describes the smallest change beyond measurement error, often estimated using the standard error of measurement?
- Minimal clinically important difference (MCID)
- Minimal detectable change (MDC) or smallest real difference
- Responsiveness coefficient
- Cross-cultural equivalence
Correct Answer: Minimal detectable change (MDC) or smallest real difference
Q17. In cost-utility analysis, how is a QALY calculated?
- Sum of direct medical costs and indirect costs per year
- Health utility value multiplied by duration spent in that health state
- Difference in HRQOL score divided by sample size
- Number of disease-free days per month
Correct Answer: Health utility value multiplied by duration spent in that health state
Q18. Which recall period choice might reduce recall bias for symptoms that fluctuate daily?
- Lifetime recall
- One-month recall for daily symptoms
- 24-hour or past-week recall
- No recall period specified
Correct Answer: 24-hour or past-week recall
Q19. What is mapping in the context of HRQOL and economic evaluation?
- Translating a questionnaire into another language
- Converting disease-specific HRQOL scores into generic utility values using statistical algorithms
- Mapping patients’ residential addresses to health outcomes
- Designing an item bank for computerized adaptive testing
Correct Answer: Converting disease-specific HRQOL scores into generic utility values using statistical algorithms
Q20. Which practice improves interpretability of HRQOL change scores in clinical trials?
- Reporting only p-values without effect sizes
- Using both anchor-based estimates (e.g., patient global impression) and distribution-based metrics to triangulate MCID
- Relying solely on baseline-to-endpoint mean differences without context
- Suppressing confidence intervals to avoid confusion
Correct Answer: Using both anchor-based estimates (e.g., patient global impression) and distribution-based metrics to triangulate MCID
