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National Vascular Registry 2016 Annual Report AppendicesData Field Description File - 2016 NVR Annual Report - Carotid Endarterectomy

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Data field position	Column A	Column B	Column C	Column D	Column E	Column F	Column G	Column H	Column I	Column J	Column K	Column L
Data Fields	Trust code	Trust Name	N of carotid endarterectomy cases from HES	N of carotid endarterectomy cases on the NVR	% Carotid endarterectomy case ascertainment	N of Symptomatic cases	% of patients referred within 7 days of symptom	% of patients receiving surgery within 7 days of referral	% of patients having surgery within 14 days of symptom	Median delay and IQR from index symptom to surgery	Median delay and IQR from index symptom to surgery	% Stroke and/or death Adjusted
Data Field Descriptions	NHS Trust Code at time of audit	NHS Trust Name at time of audit	The number of cases that were identified in HES in 2015	The total number of cases entered into the audit and utilisable in the report (dates 01/01/2015- 31/12/2015)	The percentage is the number of cases in report divided by the number of cases in HES	The number of patients undergoing a carotid endarterectomy for symptomatic disease	The percentage of cases where the difference between the date of symptom and date of referral is 7 days or less	The percentage of cases where the difference between the date of referral and date of operation is 7 days or less	The percentage of cases where the difference between the date of symptom and date of operation is 14 days or less	The median number of days and interquartile range between index symptom and carotid endarterectomy	The median number of days and interquartile length of stay	The percentage of patients who died or experienced a stroke within 30 days of carotid endarterectomy (adjusted) in 2013-2015
Data Field Types	text	text	integer	integer	percentage	integer	percentage	percentage	percentage	string	string	percentage
Data Field Format	3 Alpher /Numeric e.g. AB1	text	integer	integer	0%	integer	0%	0%	0%	0 (0,0)	0 (0,0)	0%