News (Page 10)

Reliability, Validity, and Responsiveness of a 2-Min Walk Test To Assess Exercise Capacity of COPD Patients

Patients with COPD experience a wide variation in their levels of disability. Rehabilitation is recommended for COPD patients with moderate-to-severe disease who are aiming at reducing symptoms, improving quality of life, and increasing physical and emotional participation in everyday activities. Baseline and outcome assessments should be made in order to (1) quantify the patient’s functional […]

Longitudinal Changes in Prevalence of Respiratory Symptoms Among Canadian Grain Elevator Workers: Recommendation

This study reported that respiratory symptoms consistent with bronchial responsiveness were significantly positively associated with cumulative dust exposure. A significant positive association was also reported between a physician’s diagnosis of bronchitis and dust exposure. Their study also showed a significant negative association between FEV1 and the ratio of FEV1/FVC and cumulative dust exposure. There is […]

Longitudinal Changes in Prevalence of Respiratory Symptoms Among Canadian Grain Elevator Workers: Discussion

Our results show that there is a positive association between long-term exposure to grain dust and increased prevalence of respiratory symptoms. Our findings suggest a dose-response relationship between years worked in the grain industry and the prevalence of chronic respiratory symptoms. Based on the ongoing intermediate cross-sectional analysis of these data, actions were taken from […]

Longitudinal Changes in Prevalence of Respiratory Symptoms Among Canadian Grain Elevator Workers: Goodness of Fit

Initially four multivariable marginal models were fitted using different within-subject covariance structures for each of the respiratory symptoms and the within-subject covariance structure that provided minimum SEs for most of the covariates was selected in order to fit the final model (shown in Appendix). The exchangeable within-subject covariance structure was selected for model building because […]