During periods of exacerbation, coryzal and cough symptoms were significantly more likely in the cold seasons (P<.001), with a seasonal change of 35.3% and 11.5%, respectively. To illustrate these differences in symptom composition, Figure 2 shows the time-course in the prevalence of dyspnea, coryzal, and cough symptoms for exacerbations in the cold and warm seasons. All stable-state respiratory symptoms, apart from dyspnea, […]
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