| Characteristic | Primary careCPRD,a n (%) | Hospital admissions HES,b n (%) | Cause-specific mortalityONS, n (%) |
|---|---|---|---|
| All strokes | 54 929 (100) | 51 013 (100) | 17 977 (100 |
| Ischaemic strokes | 17 027 (31.0) | 30 554 (59.9) | 2248 (12.5) |
| All haemorrhagic strokes SAH Other haemorrhagic strokec | 9181 (16.7)2749 (5.0)6432 (11.7) | 11 266 (22.0)2726 (5.3)8540 (16.7) | 4289 (23.9)1123 (6.2)3166 (17.6) |
| Stroke, not otherwise specified | 28 721 (52.3) | 9193 (18.0) | 11 440 (63.6) |
| M edian a ge , years ( IQR ) | 76.4 (65.9–83.9) | 78.5 (68.2–85.4) | 83.8 (76.6–89.3) |
| Sex, male | 27 215 (49.5) | 24 308 (47.7) | 6893 (38.3) |
| Ethnic group | |||
| WhiteSouth AsianBlackOther (including Mixed)Unknown/missing | 50 161 (91.3)848 (1.5)584 (1.1)494 (0.9)2842 (5.2) | 46 993 (92.1)724 (1.4)571 (1.1)528 (1.0)2290 (4.5) | 15 347 (85.4)148 (0.8)131 (0.7)179 (1.0)2172 (12.1) |
| Family history of IHD | 8064 (14.7) | 7054 (13.8) | 1774 (9.9) |
| Smoking status | |||
| Never smokedEx-smokerCurrent smokerMissing | 21 871 (39.8)23 658 (43.1)8949 (16.3)451 (0.8) | 20 607 (40.4)21 916 (43.0)7879 (15.4)611 (1.2) | 8225 (45.8)6827 (38.0)2133 (11.9)792 (4.4) |
| BMI | |||
| UnderweightNormalOverweightObeseMissing | 1261 (2.3)15 499 (28.2)16 059 (29.2)10 629 (19.4)11 481 (20.9) | 1275 (2.5)14 496 (28.4)14 074 (27.6)9252 (18.1)11 916 (23.4) | 715 (4.0)4946 (27.5)3374 (18.8)1910 (10.6)7032 (39.1) |
| Atrial fibrillation | 8939 (16.3) | 9965 (19.5) | 4069 (22.6) |
| Diabetes | 9317 (17.0) | 9063 (17.8) | 2986 (16.6) |
| H ypertension | 31 578 (57.5) | 30 249 (59.3) | 10 723 (59.6) |
| Dyslipidaemia | 11 454 (20.9) | 10 386 (20.4) | 2896 (16.1) |
Patients might be represented in ≥1 column if their stroke(s) was recorded in ≥1 data source. Age, atrial fibrillation, diabetes, hypertension, and dyslipidaemia were determined at the time of the recorded stroke. BMI and smoking status were determined at the time of the first recorded stroke (in a given dataset) and assumed to be the same for any subsequent strokes in that patient. Family history of IHD refers to a family history of myocardial infarction and angina.
BMI = body mass index. CPRD = Clinical Practice Research Datalink. HES = Hospital Episode Statistics. IHD = ischaemic heart disease. IQR = interquartile range. ONS = Office for National Statistics. SAH = subarachnoid haemorrhage.
aIn CPRD, a total of 54 929 discrete stroke events were recorded in 49 791 individual patients. bIn HES, a total of 51 013 discrete stroke events were recorded in 47 481 individual patients. cIncludes intracerebral haemorrhagic stroke and haemorrhagic strokes not otherwise specified.