Table 1 Sample Characteristics (n = 743)
From: Validation of adult asthma case definitions for primary care sentinel surveillance
Characteristic | n | Mean (SD) | Median (Range) |
|---|---|---|---|
Age, years | 743 | 50.3 (8.7) | 48.7 (18–93) |
Subcategory | n (%) | ||
Sex | Male | 327 (44) | |
Female | 416 (56) | ||
Smoking History | Never | 345 (46) | |
Past | 206 (28) | ||
Current | 192 (26) | ||
Comorbidity | Allergic rhinitis | 76 (10) | |
ACOS | 10 (1) | ||
Bronchiectasis | 8 (1) | ||
Chronic bronchitis | 17 (2) | ||
Congestive heart failure | 25 (3) | ||
COPD | 47 (6) | ||
Cor pulmonale | 0 (0) | ||
Emphysema | 11 (2) | ||
GERD | 235 (32) | ||
Sleep apnea | 87 (12) | ||
Medication | Expired n (%) | Current n (%) | Total (Expired + Current) n (%) |
SABA | 98 (13) | 96 (13) | 194 (26) |
SAMA | 3 (0) | 3 (0) | 6 (1) |
SAMA/SABA | 0 (0) | 0 (0) | 0 (0) |
ICS | 77 (10) | 45 (6) | 122 (16) |
LABA | 3 (0) | 5 (1) | 8 (1) |
LAMA | 4 (1) | 9 (1) | 13 (2) |
ICS/LABA | 10 (1) | 27 (4) | 37 (5) |
LAMA/LABA | 0 (0) | 3 (0) | 3 (0) |
ICS/LABA/LAMA | 0 (0) | 1 (0) | 1 (0) |
LTRA | 1 (0) | 0 (0) | 1 (0) |
Biologics | 1 (0) | 8 (1) | 9 (1) |
Systemic steroids | 50 (7) | 39 (5) | 89 (12) |
Other | 50 (7) | 673 (91) | 723 (97) |
Location | n (%) | ||
Asthma in cumulative patient profile | 73 (10) | ||
Asthma in disease registry | 38 (5) | ||
Asthma referral notes | 39 (5) | ||
Asthma in free text | 252 (34) | ||
Asthma elsewhere in patient chart | 34 (5) | ||
Other asthma documentation data | n (%) | ||
Asthma synonyms in patient chart | 88 (12) | ||
Work-related asthma in patient chart | 12 (2) | ||
Family history of asthma in patient chart | 25 (3) | ||
Childhood diagnosis of asthma in patient chart | 49 (7) | ||
Use of objective measures of lung function | n (%) | ||
Spirometry performed | 114 (15) | ||
Bronchodilator challenge test performed | 86 (11) | ||
Methacholine challenge test performed | 15 (2) | ||
Exercise challenge test performed | 4 (1) | ||
Method of confirmation of asthma diagnosis | n (%) | ||
Specialist diagnosis | 3 (0) | ||
Spirometry | 13 (1) | ||
Methacholine challenge test | 3 (0) | ||
Exercise challenge test | 0 (0) | ||