| SingHealth COPD and Asthma Data Mart (SCDM)1 | International Severe Asthma Registry (ISAR) [31] | Danish National Database for Asthma (DNDA) [32] |
---|---|---|---|
Summary | |||
Country | Singapore | International | Netherlands |
No. of patients | 29,7302 | 12,7643 |  > 300,000 |
Type of patients | Asthma and COPD, Primary care and specialist care, of all ages | Severe asthma with GINA Step 5, or Step 4 and uncontrolled asthma; 18Â years and above only | Asthma patients age 6 and 44Â years (excludes COPD) |
Aim | To link primary care and tertiary care data To support health services research, facilitate conduct of pragmatic trials and studies To aid clinical decision making and inform policy changes in asthma and COPD in Singapore | To generate a centralized severe asthma dataset that would permit data to be shared seamlessly between countries and institutions, to ultimately gain better insight into severe asthma on a global scale | To collect the data on all patients treated for asthma in Denmark and to monitor asthma occurrence, the quality of diagnosis, and management |
Strengths and limitations | |||
Strength | Automated data capture Weekly updates Broad range of data | Multi-national database Structured data fields with good data quality | Nation-wide database Automated data capture |
Limitation | Currently limited to two healthcare institutions Some data captured in free-text requiring additional effort to clean before analysis | Manual method of data entry via an electronic data capture system Only patients with severe asthma | Only includes patients from 6 to 44Â years old |
Availability of selected information | |||
Medical history | Yes | Yes | Not stated4 |
Smoking history | Yes | Not stated4 | Yes |
Asthma control | Yes | Yes | Not stated4 |
Lung function test | Yes | Yes | Yes |
Asthma medications | Yes | Yes | Yes |
Reason for asthma medication switch (if any) | No (but can be mined from free-text medical history) | Yes | Not stated4 |
Non-asthma medication | Yes | Not stated4 | Not stated4 |
Vaccination | Yes | Not stated4 | Not stated4 |
Unscheduled visit | Yes | Not stated4 | Not stated4 |