LCQ Research and Comparative Studies Flashcards
6 cards from real LCQ practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 LCQ Research and Comparative Studies flashcards as text
Research comparing LCQ scores between males and females with chronic cough has generally found:
Answer: Females generally report lower (worse) LCQ scores, particularly on the psychological domain
Studies indicate that females with chronic cough tend to report greater quality of life impairment on the LCQ, especially on the psychological domain.
The LCQ has been used to demonstrate that chronic cough in interstitial lung disease (ILD) produces:
Answer: Substantial quality of life impairment comparable to or exceeding that in COPD
Research using the LCQ in ILD patients has shown substantial multi-domain quality of life impairment, often comparable to the burden seen in COPD.
In a landmark randomized controlled trial using the LCQ, gefapixant (a P2X3 antagonist) demonstrated:
Answer: A statistically significant and clinically meaningful improvement in LCQ total scores compared to placebo
Phase III trials of gefapixant showed statistically significant, clinically meaningful LCQ total score improvements versus placebo in patients with refractory chronic cough.
When the LCQ is used in longitudinal cohort studies, what is the typical pattern of LCQ scores in untreated chronic cough patients?
Answer: Stable or progressively worsening scores over time without treatment
In untreated chronic cough cohorts, LCQ scores tend to remain stable or worsen over time, reflecting the chronic, persistent nature of the condition.
A meta-analysis of cough PROs would rank the LCQ's internal consistency (Cronbach's alpha) as:
Answer: Good to excellent (alpha > 0.70)
The LCQ consistently demonstrates good to excellent internal consistency with Cronbach's alpha values typically above 0.70 across multiple studies.
Research using the LCQ in post-COVID-19 patients with persistent cough has demonstrated:
Answer: Significant multi-domain LCQ impairment similar to idiopathic chronic cough
Studies applying the LCQ in post-COVID-19 patients with persistent cough show significant impairment across all three domains, mirroring patterns seen in idiopathic chronic cough.