Set | Query | Results |
---|---|---|
#1 | (epidemiology) OR (incidence) OR (Prevalence) OR (Frequency) | 3483569 |
#2 | (“Asthma-chronic obstructive pulmonary disease overlap syndrome”) OR (“Asthma and chronic obstructive pulmonary disease overlap syndrome”) OR (“asthma-COPD overlap syndrome”) OR (“asthma-COPD overlap”) OR (“asthma-COPD”) OR (“ACOS”) OR (“mixed asthma-COPD phenotype”) OR (“Asthma combined with COPD”) OR (“coexistence of asthma and COPD”) OR (“COPD with asthmatic features”) OR (“overlap of asthma-COPD”) | 1692 |
#3 | (“Pulmonary Disease, Chronic Obstructive”) OR (“Chronic Obstructive Pulmonary Disease”) OR (“COPD”) OR (“asthma”) OR (“asthmatic”) OR (“Asthmatic Patient”) | 237,190 |
#4 | #1 AND #2 AND #3 | 258 |