Data quality and 30-day survival for out-of-hospital cardiac arrest in the UK out-of-hospital cardiac arrest registry: a data linkage study

Rajagopal, Sangeerthana and Booth, Scott J and Brown, Terry P and Ji, Chen and Hawkes, Claire and Siriwardena, A. Niroshan and Kirby, Kim and Black, Sarah and Spaight, Robert and Gunson, Imogen and Brace-McDonnell, Samantha J and Perkins, Gavin D (2017) Data quality and 30-day survival for out-of-hospital cardiac arrest in the UK out-of-hospital cardiac arrest registry: a data linkage study. BMJ Open, 7 (11). e017784-e017784. ISSN 2044-6055

Full content URL: http://doi.org/10.1136/bmjopen-2017-017784

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Data quality and 30-day survival for out-of-hospital cardiac arrest in the UK out-of-hospital cardiac arrest registry: a data linkage study
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Abstract

Objectives
The Out-of-Hospital Cardiac Arrest Outcomes (OHCAO) project aims to understand the epidemiology and outcomes of out-of-hospital cardiac arrest (OHCA) across the UK. This data linkage study is a subproject of OHCAO. The aim was to establish the feasibility of linking OHCAO data to National Health Service (NHS) patient demographic data and Office for National Statistics (ONS) date of death data held on the NHS Personal Demographics Service (PDS) database to improve OHCAO demographic data quality and enable analysis of 30-day survival from OHCA.

Design and setting
Data were collected from 1 January 2014 to 31 December 2014 as part of a prospective, observational study of OHCA attended by 10 English NHS Ambulance Services. 28 729 OHCA cases had resuscitation attempted by Emergency Medical Services and were included in the study. Data linkage was carried out using a data linkage service provided by NHS Digital, a national provider of health-related data. To assess data linkage feasibility a random sample of 3120 cases was selected. The sample was securely transferred to NHS Digital to be matched using OHCAO patient demographic data to return previously missing demographic data and provide ONS date of death data.

Results
A total of 2513 (80.5%) OHCAO cases were matched to patients in the NHS PDS database. Using the linkage process, missing demographic data were retrieved for 1636 (72.7%) out of 2249 OHCAO cases that had previously incomplete demographic data. Returned ONS date of death data allowed analysis of 30-day survival status. The results showed a 30-day survival rate of 9.3%, reducing unknown survival status from 46.1% to 8.5%.

Conclusions
In this sample, data linkage between the OHCAO registry and NHS PDS database was shown to be feasible, improving demographic data quality and allowing analysis of 30-day survival status.

Keywords:out-of-hospital cardiac arrest, epidemiology, survival, registry
Subjects:A Medicine and Dentistry > A300 Clinical Medicine
B Subjects allied to Medicine > B780 Paramedical Nursing
Divisions:College of Social Science > School of Health & Social Care
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ID Code:29681
Deposited On:24 Nov 2017 00:21

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