Related Variables
chrphle | Did you usually bring up phlegm like this as much as twice a day | General Health | |
couphl3 | Have you had periods or episodes of increased cough and phlegm lasting three weeks or more | General Health | |
phl1st | Did you usually bring up phlegm at all on getting up or first thing in the morning | General Health | |
phl3 | Did you usually bring up phlegm like this for three consecutive months or more during the year | General Health | |
phlrest | Did you bring up phlegm at all during the rest of the day or night | General Health |