Table 2 Characteristics categorized by COPD severity.
Characteristic | No COPD (N = 3,172,662/91.58%) | Mild COPD (GOLD 1) (N = 29,828/0.86%) | Moderate COPD (GOLD 2) (N = 46,903/1.35%) | Severe COPD (GOLD 3) (N = 30,055/0.87%) | Very severe COPD (GOLD 4) (N = 21,579/0.62%) | Unspecified COPD (N = 163,342/4.71%) |
|---|---|---|---|---|---|---|
Sociodemographic characteristics | ||||||
Median age (IQR)—years | 70 (59–78) | 73 (64–79) | 73 (64–79) | 72 (64–78) | 70 (63–76) | 72 (64–79) |
Sex—no. (%) | ||||||
Female—no (%) | 1,121,502 (35.6) | XXX | XXX | XXX | 7506 (34.8) | 58,082 (35.6) |
Male—no (%) | 2,051,050 (64.7) | 18,067 (60.6) | 30,157 (64.3) | 19,884 (66.2) | 14,275 (66.2) | 105,256 (64.4) |
Unknown—no (%) | 110 (0.0) | XXX | XXX | XXX | XXX | 4 (0.0) |
Median Charlson Comorbidity Index (IQR)—pts | 1 (0–2) | 3 (2–4) | 3 (2–4) | 3 (2–4) | 3 (2–4) | 3 (2–4) |
Charlson comorbidity index items—no. (%) | ||||||
Diabetes Mellitus | ||||||
Uncomplicated | 676,421 (21.3) | 6883 (23.1) | 10,867 (23.2) | 6413 (21.3) | 4229 (19.6) | 41,945 (25.7) |
With end-organ damage | 157,306 (5.0) | 2609 (8.8) | 4305 (9.2) | 2781 (9.3) | 1691 (7.8) | 12,790 (7.8) |
Cancer | ||||||
Non-metastatic | 31,385 (1.0) | 517 (1.7) | 932 (2.0) | 652 (2.2) | 445 (2.1) | 2251 (1.4) |
Metastatic | 7023 (0.2) | 97 (0.3) | 209 (0.5) | 175 (0.6) | 114 (0.5) | 472 (0.3) |
Renal Disease | 589,473 (18.6) | 8915 (29.9) | 14,316 (30.5) | 8729 (29.0) | 5311 (24.6) | 44,688 (27.4) |
Congestive Heart Failure | 1,130,525 (35.6) | 15,778 (52.9) | 27,190 (58.0) | 17,992 (59.9) | 12,371 (57.3) | 78,235 (47.9) |
Chronic Pulmonary Disease | 84,295 (2.7) | 29,828 (100) | 46,903 (100) | 30,055 (100) | 21,579 (100) | 163,342 (100) |
Peripheral Vascular Disease | 295,232 (9.3) | 4536 (15.2) | 8086 (17.2) | 5106 (17.00) | 3534 (16.4) | 26,295 (16.1) |
Cerebrovascular Disease | 132,846 (4.2) | 1705 (5.7) | 2863 (6.1) | 1778 (5.9) | 1158 (5.4) | 8427 (5.2) |
Myocardial infarction | 1,017,423 (32.1) | 7493 (25.1) | 11,685 (24.9) | 7736 (25.7) | 6498 (30.1) | 51,840 (31.7) |
Dementia | 32,314 (1.0) | 329 (1.1) | 521 (1.1) | 377 (1.3) | 267 (1.2) | 2290 (1.4) |
Hemiplegia or Paraplegia | 32,373 (1.0) | 267 (0.9) | 467 (1.0) | 376 (1.3) | 292 (1.4) | 2229 (1.4) |
Liver disease | ||||||
Mild | 40,525 (1.3) | 813 (2.7) | 1256 (2.7) | 828 (2.8) | 561 (2.6) | 2717 (1.7) |
Moderate to severe | 4605 (0.2) | 72 (0.2) | 125 (0.3) | 72 (0.2) | 51 (0.2) | 288 (0.2) |
Rheumatoid Disease | 41,478 (1.3) | 610 (2.1) | 885 (1.9) | 516 (1.7) | 328 (1.5) | 3,033 (1.9) |
Peptic Ulcer Disease | 8987 (0.3) | 107 (0.4) | 221 (0.5) | 133 (0.4) | 112 (0.5) | 606 (0.4) |
AIDS | 2966 (0.1) | 23 (0.1) | 41 (0.1) | 44 (0.2) | 25 (0.1) | 153 (0.1) |
Outcome parameter | ||||||
In-hospital mortality—no. (%) | 63,804 (2.0) | 320 (1.1) | 580 (1.2) | 560 (1.9) | 1,013 (4.7) | 4,393 (2.7) |
Hospital length of stay—d (IQR) | 3 (1–6) | 5 (3–9) | 6 (3–10) | 7 (4–12) | 8 (4–14) | 5 (2–8) |
Peri- Interventional Ventilation Time—h (IQR) No. of ventilation support (%) | 23 (5–92) N = 101,978 (3.2) | 17.5 (5–59) N = 1122 (3.8) | 17 (5–60.5) N = 2280 (4.9) | 23 (7–76) N = 2385 (7.9) | 35 (9–106) N = 3955 (18.3) | 27 (7–95) N = 11,191 (6.9) |
