Definition of respiratory symptoms
Symptoms | Definition | |
Cough | Answered yes to: | |
Do you usually cough first thing in the morning in the winter? | ||
or | ||
Do you usually cough during the day, or at night, in the winter? | ||
Sputum production | Answered yes to: | |
Do you usually bring up any phlegm from your chest first thing in the morning in the winter? | ||
or | ||
Do you usually bring up any phlegm from your chest during the day or at night in the winter? | ||
Cough and sputum production | Both cough and sputum production as defined above | |
Chronic bronchitis | Both cough and sputum production and answered yes to: | |
Do you cough like this on most days for as much as 3 months each year? | ||
and | ||
Do you bring up phlegm like this on most days for as much as 3 months each year? |