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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The Chronic Respiratory Disease Questionnaire has been supported in the evidence to be one of the most optimal instruments to measure HRQL in patients with chronic respiratory disease. A comparison of three disease-specific and two generic health-status measures to evaluate the outcome of pulmonary rehabilitation in COPD.

It is recommended respkratory both general and condition specific HRQL questionnaires be administered alongside physiologic tests since each of these contribute unique information regarding disease state and quality of life.

Functional measures were also well correlated with CRQ change scores. The original questiionnaire of the CRQ was developed in by Guyatt et al 2 and followed Kirshner and Guyatt’s 7 principles of questionnaire development. Knowledge of an outcome measure’s sensitivity to change is crucial.

Aaron et al 14 used the respuratory statistic to assess the sensitivity. A novel, short, and simple questionnaire to measure health-related quality of life in patients with chronic obstructive pulmonary disease.

Initial testing of reproducibility, responsiveness, and validity was also completed. Reliability and validity of the chronic respiratory questionnaire CRQ Thorax. The PCPs assessed the patients at baseline and at all follow-up visits throughout the year.

Chronic Respiratory Disease Questionnaire-CRQ

The original interviewer administered CRQ requires 20 to 25 minutes for the first administration and 10 to 15 minutes for each follow up visit. Measurement of short-term changes in dyspnea and disease-specific quality of life following an acute COPD exacerbation. Author information Copyright and License information Disclaimer. Relative responsiveness of the chronic respiratory questionnaire, St. Also available is the self-administered version of the CRQ. In the clinic, it is not only necessary to measure outcomes of treatment regarding the intervention process, but it is also essential to measure the extent to which the patient feels the treatment has influenced their condition and quality of life.


This may also increase the chances of the patient answering more questionnairw. A randomized trial to evaluate the self-administered standardized chronic respiratory questionnaire. Test-retest reliability of the CRQ has been found to be high. Other useful means of the measure are interpreting studies that show significant findings and improvement of expressing results.

Further, Harper et al 13 reported that CRQ scores remained stable over time in clinically stable patients while CRQ scores drq in patients who were expected respiratlry have clinical improvements. In both studies, the CRQ was used to evaluate patients who were predicted to improve with initiation or modification of treatment. Many studies have examined the correlation between CRQ scores and the physiologic factors believed to contribute to dysfunction in patients with pulmonary disease.

For this reason, it is important to evaluate the queztionnaire of various interventions to ensure that patients are receiving the most efficient and best available care. qestionnaire

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

In comparison with global ratings of change, the CRQ was found to have moderate to high correlations 2 which were significantly stronger than those of generic health measures.

Wyrwich et al 15 used triangulation methods to identify clinically important differences based on both patient and primary care provider PCP perceived differences. The self administered CRQ questipnnaire a written version of the tool that the patient completes independently; the wording, content, rewpiratory and scoring are exactly consistent with the original version.

In the second responsiveness assessment, the developers administered the CRQ in conjunction with other questionnaires. The resulting questionnaire contains 20 items that are believed to represent areas of dysfunction that are most significant to this patient population. Construct validity was maximized during the original development of the questionnaire by using a multistep process to determine and incorporate the significant aspects of HRQL that are affected by pulmonary disease.

Pearson correlation coefficients were used to determine consistency over time of both individual item scores and domain total scores. He found no evidence of bias in either the initial 6 month period or a second 6 month period.


Dhronic property can also aid researchers when gathering resources to conduct studies by enabling them to calculate appropriate sample sizes. In fact, Guyatt et al 20 demonstrated that the dyspnea domain of the CRQ was the only HRQL instrument that showed statistically significant responsiveness when tested over 2 known interventions in reducing dyspnea in day-to-day activities. Combining scores from different patient reported outcome measures in meta-analyses: Available applications through flintbox: Health Qual Life Outcomes and has been widely used.

For Clinical Trial and Observational Study use, please fill out our request form from our website: From these results, the researchers concluded that the CRQ has excellent reliability. There is currently no gold standard for determining HRQL, 20 so the validity of the CRQ has been assessed primarily through construct and quesitonnaire validity.

Comparison of outcome measures for patients with chronic obstructive pulmonary disease COPD in an outpatient setting. Items within the dyspnea domain varied extensively, so the developers of the tool individualized this section, requesting patients to determine the 5 most important activities in their life that are affected by dyspnea.

Physiologic factors that determine the health-related quality of life in patients with COPD. The panel’s levels for detecting small, moderate, and large changes were slightly higher than previously determined levels based on patient-perceived change. National Center for Biotechnology InformationU. Another important characteristic of an assessment tool is its ability to detect change.

Based on these interviews, items were rated on their importance and grouped into 1 of 4 categories: It has high internal consistency and test-retest reliability, as well as moderate to strong construct and convergent validity. Other domains of the CRQ including emotion and mastery significantly correlated with somatisation, anxiety, and depression domains of the SCL Fatigue domain scores also improved as shuttle walk test scores improved.

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