The Chronic Respiratory Disease Questionnaire (CRQ) is the most commonly used disease specific measurement tool to assess HRQL in patients with chronic . Due to their widespread and thorough validation, the following questionnaires are recommended: Chronic Respiratory Disease Questionnaire (CRDQ or CRQ) . To measure health related quality of life in patients with chronic respiratory disease.

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Outcomes in Cardiopulmonary Physical Therapy: Chronic Respiratory Disease Questionnaire (CRQ)

The self-administered questionnaire is also reported to have high reliability. Establishing tespiratory minimal number of items for a responsive, valid, healthrelated quality of life instrument.

Guyatt et al 2 the authors of the CRQ, established the test-retest reliability of the tool prior to its release. A mean change per question of 0.

Outcomes in Cardiopulmonary Physical Therapy: Chronic Respiratory Disease Questionnaire (CRQ)

Hcronic panel’s levels for detecting small, moderate, and large changes were slightly higher than previously determined levels based on patient-perceived change. They administered the questionnaire 6 times in a 2-week interval to 25 patients with stable COPD.

There is currently no gold standard for determining HRQL, 20 so the validity of the CRQ has been assessed primarily through construct and convergent validity. Available applications through flintbox: The CRQ also correlates well with generic qjestionnaire.

The 4 domains are scored separately and can illustrate questionmaire in individual domains of HRQL. This article has been cited by other articles in PMC. These lower baseline scores and greater sensitivity of the self-report questionnaire can be attributed to the fact that patients are more likely to report the severity of the impairment when asked to fill out the questionnaire in private, as opposed to being asked by the interviewer.

The use of any format of the CRQ does require a license agreement. It correlates well with other disease specific and generic measures of HRQL as well as with global ratings of change. Available and validated in several languages – please inquire. Subsequent versions of the test have been developed to improve time and ease of administration. Wyrwich et al 15 used triangulation methods to identify clinically important differences based on both patient and primary care provider PCP perceived differences.


The evidence has shown the Quedtionnaire to be a valid test of HRQL, with moderate to strong correlations with global ratings as well as both generic and disease specific convergent measures. Williams et al 26 used standardized response means to assess the sensitivity and also found the CRQ-SR to be highly sensitive across all domains of the questionnaire indicating that it is able to detect changes following a treatment program.

Chronic Respiratory Disease Questionnaire (CRQ)

Consistently, the CRQ has been shown to be more responsive than other measures. The researchers estimated that on average, scores on the CRQ needed to change by about 0. The CRQ exhibits responsiveness that is as good or superior to all other measures looked at, and it is able to detect significant differences even in small populations. Based on these interviews, items were rated on their importance and cyronic into 1 of questionnaite categories: Important considerations for questionnaires such as CRQ include the ease and cost of administration.

In a study by Redelmeier et al, 24 CRQ score differences were also found to be moderately correlated with subjective comparison ratings made by patients regarding themselves and others. The evidence has shown that the CRQ is a valid tool to assess health related quality of life in patients with chronic respiratory disease.

According to the office of the developer, written communication, October, using the CRQ-IAS, in which the dyspnea section is also standardized, reduces the administration time to 8 minutes. Chrnoic the mastery and emotional domains were found to be moderately correlated with the global rating of repiratory with r values of 0.

High response rates to this type of questionnaire have been achieved in outpatient settings; however, the interview form is quite expensive 13 and time consuming. Using 2 rounds of the Delphi method, one in person meeting and a repetitive enhancement process for circulating and correcting the final report, they were able to determine the values of change for each domain that would result in a small, moderate, and large MCID. Although chrojic authors determined that the self-administered version of the CRQ perceives analogous levels of mastery, emotional function, and fatigue, they state that the different versions of the test should not be used interchangeably.


Harper et al 13 also examined CRQ measurements in clinically stable patients over time.

This may be a factor to consider when administering the CRQ. Assessing the minimal important questionnakre in symptoms: All questions were pretested to finalize structure respiratogy wording.

Wijkstra 10 determined that significant correlations exist between the CRQ fatigue domain and the depression and somatisation domain of the Symptom Checklist 90 Suestionnaire Combining scores from different patient reported outcome measures in meta-analyses: Author information Copyright and License information Disclaimer.

This paper describes the current research regarding the reliability, validity, responsiveness, minimally clinical important difference, and suggested use of the Chronic Respiratory Disease Questionnaire in clinical practice.

Further, Harper et al 13 reported that CRQ scores remained stable over time in clinically stable patients while CRQ scores questkonnaire in patients who were expected to have clinical improvements. HRQL is commonly assessed through self or interviewer administered questionnaires, and may be discriminative evaluating cross-sectional differences between patients at a single point in time or evaluative measuring longitudinal changes within patients over rsepiratory period of time.

Comparison of discriminative properties among disease-specific questionnaires for measuring health-related quality of life in patients with chronic obstructive pulmonary disease. In the dyspnea and mastery domains, only one item was found to lack significant correlation over time.

Available literature has repeatedly illustrated the ability of the CRQ to generate results that are reproducible in a variety of settings. In today’s medical system, limited resources are available for patient care.