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1.
Chest ; 148(1): 24-31, 2015 Jul.
Article in English | MEDLINE | ID: mdl-25856777

ABSTRACT

BACKGROUND: We conducted a systematic review on the management of psychogenic cough, habit cough, and tic cough to update the recommendations and suggestions of the 2006 guideline on this topic. METHODS: We followed the American College of Chest Physicians (CHEST) methodologic guidelines and the Grading of Recommendations, Assessment, Development, and Evaluation framework. The Expert Cough Panel based their recommendations on data from the systematic review, patients' values and preferences, and the clinical context. Final grading was reached by consensus according to Delphi methodology. RESULTS: The results of the systematic review revealed only low-quality evidence to support how to define or diagnose psychogenic or habit cough with no validated diagnostic criteria. With respect to treatment, low-quality evidence allowed the committee to only suggest therapy for children believed to have psychogenic cough. Such therapy might consist of nonpharmacologic trials of hypnosis or suggestion therapy, or combinations of reassurance, counseling, and referral to a psychologist, psychotherapy, and appropriate psychotropic medications. Based on multiple resources and contemporary psychologic, psychiatric, and neurologic criteria (Diagnostic and Statistical Manual of Mental Disorders, 5th edition and tic disorder guidelines), the committee suggests that the terms psychogenic and habit cough are out of date and inaccurate. CONCLUSIONS: Compared with the 2006 CHEST Cough Guidelines, the major change in suggestions is that the terms psychogenic and habit cough be abandoned in favor of somatic cough syndrome and tic cough, respectively, even though the evidence to do so at this time is of low quality.


Subject(s)
Cough/etiology , Cough/psychology , Habits , Somatoform Disorders/diagnosis , Tics/diagnosis , Adult , Child , Humans , Practice Guidelines as Topic , Somatoform Disorders/psychology , Syndrome , Tics/psychology
2.
Chest ; 148(1): 32-54, 2015 Jul.
Article in English | MEDLINE | ID: mdl-25764280

ABSTRACT

BACKGROUND: Successful management of chronic cough has varied in the primary research studies in the reported literature. One of the potential reasons relates to a lack of intervention fidelity to the core elements of the diagnostic and/or therapeutic interventions that were meant to be used by the investigators. METHODS: We conducted a systematic review to summarize the evidence supporting intervention fidelity as an important methodologic consideration in assessing the effectiveness of clinical practice guidelines used for the diagnosis and management of chronic cough. We developed and used a tool to assess for five areas of intervention fidelity. Medline (PubMed), Scopus, and the Cochrane Database of Systematic Reviews were searched from January 1998 to May 2014. Guideline recommendations and suggestions for those conducting research using guidelines or protocols to diagnose and manage chronic cough in the adult were developed and voted upon using CHEST Organization methodology. RESULTS: A total of 23 studies (17 uncontrolled prospective observational, two randomized controlled, and four retrospective observational) met our inclusion criteria. These articles included 3,636 patients. Data could not be pooled for meta-analysis because of heterogeneity. Findings related to the five areas of intervention fidelity included three areas primarily related to the provider and two primarily related to the patients. In the area of study design, 11 of 23 studies appeared to be underpinned by a single guideline/protocol; for training of providers, two of 23 studies reported training, and zero of 23 reported the use of an intervention manual; and for the area of delivery of treatment, when assessing the treatment of gastroesophageal reflux disease, three of 23 studies appeared consistent with the most recent guideline/protocol referenced by the authors. For receipt of treatment, zero of 23 studies mentioned measuring concordance of patient-interventionist understanding of the treatment recommended, and zero of 23 mentioned measuring enactment of treatment, with three of 23 measuring side effects and two of 23 measuring adherence. The overall average intervention fidelity score for all 23 studies was poor (20.74 out of 48). CONCLUSIONS: Only low-quality evidence supports that intervention fidelity strategies were used when conducting primary research in diagnosing and managing chronic cough in adults. This supports the contention that some of the variability in the reporting of patients with unexplained or unresolved chronic cough may be due to lack of intervention fidelity. By following the recommendations and suggestions in this article, researchers will likely be better able to incorporate strategies to address intervention fidelity, thereby strengthening the validity and generalizability of their results that provide the basis for the development of trustworthy guidelines.


Subject(s)
Cough/diagnosis , Cough/therapy , Adult , Chronic Disease , Cough/etiology , Humans , Outcome Assessment, Health Care , Practice Guidelines as Topic , Research Design
3.
Chest ; 121(4): 1123-31, 2002 Apr.
Article in English | MEDLINE | ID: mdl-11948042

ABSTRACT

STUDY OBJECTIVE: To psychometrically evaluate a cough-specific quality-of-life questionnaire (CQLQ) in adults. DESIGN: Prospective evaluation of CQLQ using three different cohorts of adult subjects with cough. SETTING: Academic tertiary-care ambulatory medical facilities. PARTICIPANTS: One hundred fifty-four subjects complaining of chronic cough, 30 of acute cough, and 31 smokers with cough. INTERVENTIONS: Self-administration of the CQLQ in acute coughers, smokers, and chronic coughers before and after therapy. MEASUREMENTS: Psychometric analyses including factor analysis (FA), and assessments of reliability and validity. RESULTS: Acute and chronic cough data were subjected to FA, and the Cronbach alpha and interitem correlations were computed. FA of chronic and acute cough data (n = 184) revealed six subscales. The Cronbach alpha for the total CQLQ was 0.92, and it was 0.62 to 0.86 (mean, 0.76) for the six subscales. Interitem correlations for the total CQLQ ranged from -0.06 to 0.72, with a mean of 0.28. Test-retest reliability in 52 chronic coughers demonstrated nonsignificant changes with readministration of the questionnaire, and the intraclass correlation for total CQLQ was 0.89, and for the subscales the range was 0.75 to 0.93. Analysis of variance followed by tests of contrasts among all possible pairings of chronic coughers, acute coughers, and smokers showed significant differences (p < or = 0.001) among the groups. Posttreatment cure scores were significantly lower (p < or = 0.001) than pretreatment scores in 24 chronic coughers. CONCLUSIONS: The 28-item CQLQ has dimensionality that is consistent with a cough-specific quality-of-life instrument. It is a valid and reliable method by which to assess the impact of cough on the quality of life of chronic and acute coughers, and the efficacy of cough therapies in chronic coughers.


Subject(s)
Cough/psychology , Health Status Indicators , Quality of Life , Activities of Daily Living/psychology , Adult , Aged , Cough/etiology , Female , Humans , Male , Middle Aged , Prospective Studies , Psychometrics , Reproducibility of Results
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