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 […]
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 […]
Ige and Awoyemi conducted an age- and sex-matched case-control study to assess occupational induced lung impairment as a result of exposure to grain and flour dust. The most frequent respiratory symptoms reported by bakery workers were sneezing, runny nose (53.3%), and periodic breathlessness/chest tightness (23.2%), while 21.5% of workers reported symptoms of cough/phlegm. In our […]
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 […]
The least reported chronic respiratory symptom was chronic dyspnea (9.9%) among grain workers in the Great Lakes region. After dust control, the most common reported symptom was chronic dyspnea (16.1%) among St. Lawrence grain workers followed by chronic sputum (15.0%) among grain workers in the Mountain region. After dust control, the least reported symptom was […]
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 […]
The data were collected in intervals termed cycles. The periods of cycles and the number of grain workers that participated in each cycle were as follows: October 1978 to September 1981, cycle 1 (n = 5,702); October 1981 to September 1984, cycle 2 (n = 5,491); October 1984 to September 1987, cycle 3 (n = […]