Table 3.
Demographic and clinical characteristics of patients with asthma at the University of Washington Medicine in 2018.
| Characteristic | Data instances (N=14,644), n (%) | Data instances connecting to asthma hospital encounters in the subsequent 12 months (n=218), n (%) | Data instances connecting to no asthma hospital encounter in the subsequent 12 months (n=14,426), n (%) | ||||
| Age (years) | |||||||
|
|
<40 | 4823 (32.9) | 77 (35.3) | 4746 (32.9) | |||
|
|
40-65 | 6794 (46.4) | 111 (50.9) | 6683 (46.3) | |||
|
|
>65 | 3027 (20.7) | 30 (13.8) | 2997 (20.8) | |||
| Gender | |||||||
|
|
Male | 5238 (35.8) | 100 (45.9) | 5138 (35.6) | |||
|
|
Female | 9406 (64.2) | 118 (54.2) | 9288 (64.4) | |||
| Race | |||||||
|
|
American Indian or Alaska native | 281 (1.9) | 8 (3.7) | 273 (1.9) | |||
|
|
Asian | 1325 (9.1) | 18 (8.7) | 1307 (9.1) | |||
|
|
Black or African American | 1570 (10.7) | 79 (36.2) | 1491 (10.3) | |||
|
|
Native Hawaiian or other Pacific islander | 131 (0.9) | 2 (0.9) | 129 (0.9) | |||
|
|
White | 10,213 (69.7) | 110 (50.5) | 10,103 (70) | |||
|
|
Unknown or not reported | 1124 (7.7) | 1 (0.5) | 1123 (7.8) | |||
| Ethnicity | |||||||
|
|
Hispanic | 850 (5.8) | 20 (9.2) | 830 (5.7) | |||
|
|
Non-Hispanic | 12,566 (85.8) | 196 (89.9) | 12,370 (85.7) | |||
|
|
Unknown or not reported | 1228 (8.4) | 2 (0.9) | 1226 (8.5) | |||
| Insurance | |||||||
|
|
Private | 10,800 (73.7) | 108 (49.5) | 10,692 (74.1) | |||
|
|
Public | 8023 (54.8) | 182 (83.5) | 7841 (54.3) | |||
|
|
Self-paid or charity | 484 (3.3) | 25 (11.5) | 459 (3.2) | |||
| Number of years from the first encounter related to asthma in the data set | |||||||
|
|
≤3 | 10,566 (72.1) | 124 (56.9) | 10,442 (72.4) | |||
|
|
>3 | 4078 (27.8) | 94 (43.1) | 3984 (27.6) | |||
| Asthma medication prescription | |||||||
|
|
Inhaled corticosteroid | 6177 (42.2) | 108 (49.5) | 6069 (42.1) | |||
|
|
Inhaled corticosteroid and long-acting β-2 agonist combination | 4508 (30.8) | 83 (38.1) | 4425 (30.7) | |||
|
|
Leukotriene modifier | 2176 (14.9) | 46 (21.1) | 2130 (14.77) | |||
|
|
Long-acting β-2 agonist | 2518 (17.2) | 62 (28.4) | 2456 (17.02) | |||
|
|
Mast cell stabilizer | 14 (0.1) | 1 (0.5) | 13 (0.09) | |||
|
|
Short-acting inhaled β-2 agonist | 9704 (66.3) | 164 (75.2) | 9540 (66.1) | |||
|
|
Systemic corticosteroid | 4163 (28.4) | 120 (55.1) | 4043 (28) | |||
| Comorbidity | |||||||
|
|
Allergic rhinitis | 2095 (14.3) | 26 (11.9) | 2069 (14.3) | |||
|
|
Anxiety or depression | 4346 (29.7) | 62 (28.4) | 4284 (29.7) | |||
|
|
Bronchopulmonary dysplasia | 4 (0) | 0 (0) | 4 (0) | |||
|
|
Chronic obstructive pulmonary disease | 932 (6.4) | 30 (13.8) | 902 (6.2) | |||
|
|
Cystic fibrosis | 17 (0.1) | 0 (0) | 17 (0.1) | |||
|
|
Eczema | 743 (5.1) | 11 (5.1) | 732 (5.1) | |||
|
|
Gastroesophageal reflux | 2657 (18.1) | 46 (21.1) | 2611 (18.1) | |||
|
|
Obesity | 1604 (10.9) | 25 (11.5) | 1579 (10.9) | |||
|
|
Sinusitis | 1372 (9.4) | 15 (6.9) | 1357 (9.4) | |||
|
|
Sleep apnea | 1499 (10.2) | 24 (11.0) | 1475 (10.2) | |||
| Smoking status | |||||||
|
|
Current smoker | 3242 (22.1) | 49 (22.5) | 3193 (22.1) | |||
|
|
Former smoker | 3494 (23.9) | 41 (18.8) | 3453 (23.9) | |||
|
|
Never smoker or unknown | 7908 (54.0) | 128 (58.7) | 7780 (53.9) | |||