Risk factors (RFs) of patients who had an AIS and HS
| RFs | AIS | HS | ||
| Number | Per cent | Number | Per cent | |
| Arteriopathy | 140 | |||
| Moyamoya | 118 | 68.60 | 8 | 5.71 |
| Dissection | 5 | 2.91 | 1 | 0.71 |
| Vasculitis | 7 | 4.07 | 2 | 1.43 |
| PVA | 1 | 0.58 | 0 | 0 |
| Peripheral vascular disease | 1 | 0.58 | 0 | 0 |
| AVM | 0 | 0 | 72 | 51.43 |
| CM | 0 | 0 | 28 | 20.00 |
| Aneurysm | 0 | 0 | 6 | 4.29 |
| AVF | 0 | 0 | 3 | 2.14 |
| Venous malformation of scalp | 0 | 0 | 0 | 0 |
| Angiotelectasis | 1 | 0.58 | 0 | 0 |
| Cardiac disorders | ||||
| ASD | 1 | 0.58 | 0 | 0 |
| VSD | 2 | 1.16 | 0 | 0 |
| RHD | 1 | 0.58 | 1 | 0.71 |
| Arrhythmia | 2 | 1.16 | 0 | 0 |
| Hypertension | 2 | 1.16 | 4 | 2.86 |
| KD | 1 | 0.58 | 0 | |
| PDA | 1 | 0.58 | 1 | 0.71 |
| Endocarditis | 1 | 0.58 | 1 | 0.71 |
| DCM | 1 | 0.58 | 0 | 0 |
| PFO | 1 | 0.58 | 0 | 0 |
| Pulmonary artery stenosis | 1 | 0.58 | 0 | 0 |
| Chronic head and neck disorders | ||||
| Cerebral tumour | 2 | 1.16 | 4 | 2.86 |
| Ventriculoperitoneal shunt | 0 | 0 | 1 | 0.71 |
| Sturge-Weber syndrome | 0 | 0 | 0 | 0 |
| Acute head and neck disorders | ||||
| Nasosinusitis | 9 | 5.23 | 0 | 0 |
| Mastoiditis | 1 | 0.58 | 0 | 0 |
| Brain trauma | 4 | 2.33 | 3 | 2.14 |
| Chronic systemic conditions | ||||
| Connective tissue disease | 3 | 1.74 | 0 | 0 |
| Iron-deficiency anaemia | 1 | 0.58 | 0 | 0 |
| Down syndrome | 1 | 0.58 | 0 | 0 |
| MELAS | 5 | 2.91 | 0 | 0 |
| Prothrombotic states | 0 | 0 | 0 | 0 |
| Acute systemic conditions | – | – | – | – |
| Fever>48 hours | 1 | 0.58 | 1 | 0.71 |
| Unknown | 13 | 7.56 | 19 | 13.57 |
AIS, arterial ischaemic stroke; ASD, atrial septal defect; AVF, arteriovenous fistula; AVM, arteriovenous malformation; CM, cavernous malformation; DCM, dilated cardiomyopathy; HS, haemorrhagic stroke; KD, Kawasaki disease; MELAS, mitochondrial encephalopathy with lactic acidosis and stroke-like episodes; PDA, patent ductus arteriosus; PFO, patent foramen ovale; PVA, postvaricella arteriopathy; RHD, rheumatic heart disease; VSD, ventricular septal defect.