| Patient characteristics (13) | Age at procedure characteristics | Weight (kg) |
| Gender | Living Status |
| Race | Zip/Postal Code |
| Primary Insurer | Ambulatory Status |
| Height (inches) | Smoking |
| Height (cm) | Quit Smoking Date |
| Weight (lbs) | |
| Medical History (14) | Chronic obstructive pulmonary disease | Prior Coronary Artery Bypass Graft |
| Diabetes | Prior Percutaneous Coronary Intervention |
| Dialysis | Prior Carotid Endarterectomy/Carotid Artery Stenting |
| Hypertension | Major surgery |
| Atrial Fibrillation | Major Brain surgery |
| Hyperlipidemia | Major cardiac Procedure Characteristics |
| Prior Congestive Heart Failure | Major vascular Procedure Characteristics |
| Pre-Procedural Characteristics (36) | Admit Date | Time at IV tPA Given |
| Visit Code | Other IV Thrombolytic Given |
| Transferred From? | Time at other IV Thrombolytic |
| CAD Symptoms | Pre-Stroke Modified Rankin Score (mRS) |
| Prior Stroke Event | National Institute of Health Stroke Score |
| Pre-op Haemoglobin (g/dl) | CT Angiography |
| Pre-op Haemoglobin (g/L) | MRI |
| Creatinine (mg/dl) | CT Perfusion |
| Creatinine (umol/L) | Magnetic Resonance Perfusion |
| Blood Pressure On Arrival - Systolic | CT |
| Diastolic | Alberta Stroke Programme Early CT Score |
| International Normalised Ratio | Core Infarct Volume (DWI Volume) |
| Glucose | Stroke Onset Witnessed |
| Pre-Op American Society of Anesthesiologists Physical Status Classification | Time Last Known Well |
| Pre-Op P2Y12 Antagonist | Time at First Emergency Department Arrival |
| Pre-Op Statin | Time at Second ED Arrival |
| Pre-Op Chronic Anticoagulant | Time at Most Recent Imaging Done |
| IV Tissue Plasminogen Activator (tPA) Given | Time at Image Interpretation |
| Procedure Characteristics (102) | Procedure Characteristics Date | Final Pass Stent Ret Dia |
| Primary Physician | Pass 1 Stent Ret Len |
| Assistant | Pass 2 Stent Ret Len |
| Medicare Health Insurance Claim Number | Final Pass Stent Ret Len |
| Hypercoagulable State | Pass 1 Asp Catheter |
| Ipsilateral | Pass 2 Asp Catheter |
| Contralateral | Final Pass Asp Catheter |
| Initial Location of Occlusion | Pass 1 Asp Cath Other |
| Side of Occlusion | Pass 2 Asp Cath Other |
| Location of Additional Occlusion | Final Pass Asp Cath Other |
| Side of Additional Occlusion | Pass 1 Separator Used |
| Expanded Thrombolysis In Cerebral Infarction Grade | Pass 2 Separator Used |
| Trial Enrollment | Final Pass Separator Used |
| American Society of Anesthesiologists Class | Pass 1 Asp Type |
| Anaesthesia | Pass 2 Asp Type |
| Intubated Prior to Angio Suite Arrival | Final Pass Asp Type |
| Time at Arrival to Angio Suite | Additional Treatment |
| Time at Groin Puncture | Extra Cranial Angioplasty |
| Stroke Onset to Groin Puncture | Side of Extra Cranial Angioplasty |
| ED Arrival to Groin Puncture | Extra Cranial Stent |
| Number of Passes | Side of Extra Cranial Stent |
| Pass 1 Intervention Type | Intra-arterial Thrombolytic Given |
| Pass 2 Intervention Type | Thrombolytic Dosage |
| Final Pass Intervention Type | IIb/IIIa Inhibitor Given |
| Pass 1 Clot Location | Heparin Given |
| Pass 2 Clot Location | Total Heparin Units |
| Final Pass Clot Location | Activated Clotting Time |
| Pass 1 Guide Cath Balloon | Angiomax Given |
| Pass 2 Guide Cath Balloon | ASA Given Intra-procedurally |
| Final Pass Guide Cath Balloon | ASA Dosage |
| Pass 1 Guide Cath Asp | Route |
| Pass 2 Guide Cath Asp | P2Y12 Antagonist Given |
| Final Pass Guide Cath Asp | P2Y12 Antagonist Dosage |
| Pass 1 Inter Cath Asp | Other intraarterial medication (antispasm) |
| Pass 2 Inter Cath Asp | Route |
| Final Pass Inter Cath Asp | Total Fluoro Time |
| Pass 1 Inter Cath Used | Total Radiation |
| Pass 2 Inter Cath Used | Contrast Volume |
| Final Pass Inter Cath Used | Final eTICI Grade |
| Pass 1 Int Cath Other: | Time at Recanalisation |
| Pass 2 Int Cath Other: | Intra-Procedural Complication |
| Final Pass Int Cath Other: | Embolization to Non-target Vessel |
| Pass 1 Distal Dev Trtmt App | Location of Vessel Perforation |
| Pass 2 Distal Dev Trtmt App | Required Additional Treatment |
| Final Pass Distal Dev Trtmt App | Technical Failure |
| Pass 1 DD Treat App Other | Please Specify: |
| Pass 2 DD Treat App Other | Procedure Characteristics Time |
| Final Pass DD Treat App Other | Time to Recanalisation |
| Pass 1 Stent Retriever | Access artery issues and complications (including but not limited to) |
| Pass 2 Stent Retriever | Dissection |
| Final Pass Stent Retriever | Occlusion |
| Pass 1 Stent Rtrvr Other | Device issues: |
| Pass 2 Stent Rtrvr Other | Dissection |
| Final Pass Stent Rtrvr Other | Device failure, breakage, or foreign body embolization |
| Pass 1 Stent Ret Dia | Device related emboli |
| Pass 2 Stent Ret Dia | Vessel perforation/rupture/extravasation (intracranial) |
| Post-Procedural Characteristics (29) | Haemorrhagic Infarction (HI) 1 | Groin Puncture Complication Requiring Intervention |
| HI2 | Time Point of Occurrence |
| Parenchymal hematoma (PH) 1 Type Haemorrhagic Transformation | Check All That Apply: |
| PH2 Type Haemorrhagic Transformation | Final Infarct Volume defined using imaging type and timepoint |
| Parenchymal hematoma remote from infarcted brain tissue | Final Infarct Volume NA |
| Intraventricular haemorrhage | Intensive Care Unit Stay |
| Subarachnoid haemorrhage | Discharge NIHSS |
| Subdural haemorrhage | Discharge NIHSS NA |
| Please Specify: | NIHSS Score Change (Timepoint - Pre-Stroke) >= 4 |
| Discharge Date | Suspected Cause of Neurologic Deterioration |
| Discharge Status | Need for access site arterial repair |
| Date of Death | Artery Type |
| Post-Operative Length of Stay | Type of complication |
| Alive at 24 Hours? | Subsequent complications |
| 24 Hour National Institute of Health Stroke Score | Retroperitoneal haemorrhage |
| 24 Hour CT | |
| Imaging Data (3) | All Head and Neck CT /CT Angiography/CT Perfusion | All cerebral angiography - Digital Subtraction Angiography |
| All head and Neck Magnetic Resonance- MRI/ Angiography/ Perfusion-weighted MRI | |
| Follow-Up (26) | Date of Contact | 1 Year NIHSS |
| Contact By | Re-admission within 1 year |
| Current Living Status; (Rehab, Nursing Facility, Hospice, Home, Dead) | Antiplatelet or Dual Antiplatelet Therapy type and duration of therapy |
| Date of Death | Cerebral target (treated) vessel re-occlusion |
| Cause of Death | Death within 90 days |
| Current Smoking | Death within 1 year |
| 30 Day Modified Rankin Score | New cerebral infarct within 30 days |
| 30 Day National Institute of Health Stroke Score | New cerebral infarct within 90 days |
| Re-admission within 30 days | New cerebral infarct within 1 year |
| 90 Day mRS | Discharge Disposition; (Rehab, Nursing Facility, Hospice, Home) |
| 90 Day NIHSS | mRS 2 years |
| Re-admission within 90 days | mRS 3 years |
| 1 Year mRS | mRS 5 years |