Variable | Non-COPD group n=19 959 | COPD group n=19 959 | p Value | ||
n | % | n | % | ||
Age, years | >0.99 | ||||
40–54 | 5141 | 25.8 | 5141 | 25.8 | |
55–69 | 7274 | 36.4 | 7274 | 36.4 | |
≥70 | 7544 | 37.8 | 7544 | 37.8 | |
Mean (SD)* | 63.8 | (12.4) | 64.5 | (12.2) | <0.001 |
Comorbidity | |||||
DM | 2595 | 13.0 | 3209 | 16.1 | <0.001 |
Dyslipidemia | 3267 | 16.4 | 4621 | 23.2 | <0.001 |
Hypertension | 7672 | 38.4 | 10 432 | 52.3 | <0.001 |
Heart failure | 375 | 1.88 | 981 | 4.92 | <0.001 |
CAD | 3141 | 15.7 | 5739 | 28.8 | <0.001 |
Medication | |||||
Use of tiotropium† | 0 | 0.00 | 39 | 0.20 | <0.001 |
Use of ipratropium† | 2 | 0.01 | 135 | 0.68 | <0.001 |
Annual OPD visits | <0.001 | ||||
<30 | 16 050 | 80.4 | 10 869 | 54.5 | |
≥30 | 3909 | 19.6 | 9090 | 45.5 | |
Mean (SD)* | 18.9 | (17.1) | 32.8 | (22.4) | <0.001 |
*Student's t-test.
†Fisher's exact test.
CAD, coronary artery disease; COPD, chronic obstructive pulmonary disease; DM, diabetes mellitus; OPD, outpatient department.