6 ms·
Or that you disregard some symptoms as normal because your smoking habit: coughing, dry throat, etc.
by tutuca 6y ago
Or that you disregard some symptoms as normal because your smoking habit: coughing, dry throat, etc.
- ajross 6y agoRight, or that there's some other confounding factor that leads smokers to be less likely to contract the disease or seek treatment. This kind of science (teasing data out of uncontrolled sampling) is really hard.