LCQ LCQ Research and Comparative Studies

Question 1

The LCQ has been used as a primary or secondary endpoint in clinical trials of which class of antitussive medication?

Accepted Answer

P2X3 receptor antagonists such as gefapixant

Answer

Proton pump inhibitors only

Answer

Antihistamines only

Answer

Oral antibiotics

Question 2

Compared to the Cough Quality of Life Questionnaire (CQLQ), the LCQ is considered:

Accepted Answer

Shorter and more practical while retaining good psychometric properties

Answer

Longer and less practical for routine clinical use

Answer

Equivalent in length and scope

Answer

Less validated and rarely used in research

Question 3

In comparative research, the LCQ total score has been shown to correlate moderately with which objective cough measure?

Accepted Answer

24-hour cough frequency count

Answer

FEV1/FVC ratio

Answer

Serum eosinophil count

Answer

Peak expiratory flow rate

Question 4

Research has demonstrated that the LCQ is responsive to change, meaning:

Accepted Answer

It detects statistically and clinically meaningful score changes following effective treatment

Answer

It measures the same score repeatedly regardless of treatment

Answer

It is only useful for baseline measurements

Answer

It cannot detect improvement, only worsening

Question 5

The LCQ has been validated for use in which of the following disease populations beyond idiopathic chronic cough?

Accepted Answer

Bronchiectasis, COPD, interstitial lung disease, and asthma

Answer

Acute bronchitis only

Answer

Pediatric asthma only

Answer

Post-thoracic surgery patients only

Question 6

In a systematic review context, the LCQ is considered a preferred outcome measure for chronic cough trials because:

Accepted Answer

It has the strongest evidence base for reliability, validity, and responsiveness among cough-specific PROs

Answer

It is the only available cough quality of life tool

Answer

It requires no patient training to complete

Answer

It was endorsed by the FDA as the only acceptable endpoint