Table 1. Comparison of frequency distributions of stroke patients hospitalized under the National Health Insurance (NHI), at the National Taiwan University Hospital (NTUH), and a cross-sectional sample at the stroke clinics and rehabilitation wards.
| NHI | NTUH | Cross-sectional sample | |
| Case number | 79,816 | 16,043 | 1,294 |
| Calendar years of data collection | 2008–2009 | 1995–2010 | 2008–2012 |
| Sex (% male)* | 59.6 | 59.3 | 65.2 |
| Age in years, mean(SD)† | 66.9 (14.2) | 65.1 (15.0) | 65.7 (12.6) |
| Types of stroke | |||
| Infarct (%)* | 62,111 (77.8) | 12,397 (77.3) | 1,097 (84.8) |
| Large artery atherothrombosis | – | 2,329 (14.5) | 292 (22.6) |
| Lacune | – | 3,702 (23.1) | 360 (27.8) |
| Cardio-embolism | – | 2,504 (15.6) | 169 (13.1) |
| Other | – | 3,862 (24.1) | 276 (21.3) |
| Intracerebral hemorrhage (%)* | 17,705 (22.2) | 3,646 (22.7) | 197 (15.2) |
| Comorbidities (%) | |||
| Hypertension* | 59,696 (75.1) | 11,460 (71.4) | 1,053 (81.4) |
| Diabetes | 31,041 (38.9) | 5,072 (31.6) | 418 (32.3) |
| Atrial fibrillation | 7,876 (9.9) | 2,525 (15.7) | 179 (13.9) |
| Ischaemic heart disease* | 9,093 (11.4) | 2,532 (15.8) | 104 (8.4) |
| Cancer* | 6,097 (7.6) | 1,921 (12.0) | 61 (4.7) |
*
P<0.001;
†
SD: standard deviation.