LCQ LCQ Reliability and Reproducibility

Question 1

What statistical measure is commonly used to evaluate the internal consistency of the LCQ?

Accepted Answer

Cronbach's alpha

Answer

Intraclass correlation coefficient (ICC)

Answer

Pearson's r

Answer

Cohen's kappa

Question 2

What is the generally accepted minimum Cronbach's alpha value for the LCQ to demonstrate adequate internal consistency?

Accepted Answer

0.7

Answer

0.5

Answer

0.6

Answer

0.9

Question 3

The LCQ demonstrates acceptable internal consistency across which of its domains?

Accepted Answer

All three domains: physical, psychological, and social

Answer

Physical domain only

Answer

Psychological and social domains only

Answer

Physical and psychological domains only

Question 4

Which type of reliability assesses whether the LCQ yields consistent scores when completed by the same patient on two separate occasions without any change in clinical condition?

Accepted Answer

Test-retest reliability

Answer

Inter-rater reliability

Answer

Internal consistency

Answer

Content validity

Question 5

What is the typical interval used between administrations in LCQ test-retest reliability studies?

Accepted Answer

1–2 weeks

Answer

24 hours

Answer

1 month

Answer

3 months

Question 6

Which factor would MOST undermine the test-retest reliability of the LCQ?

Accepted Answer

Clinical change in the patient's cough between administrations

Answer

Using a 7-point Likert scale for each item

Answer

High Cronbach's alpha values across domains

Answer

A large sample size in the study

Question 7

The LCQ was originally validated in which patient population, forming the foundation for its reliability evidence?

Accepted Answer

Adults presenting to a specialist cough clinic

Answer

Pediatric patients with chronic cough

Answer

Patients with acute upper respiratory infections

Answer

Patients with cystic fibrosis exclusively