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BMJ Qual Saf 23:47-55 doi:10.1136/bmjqs-2013-002003
  • Original research

A system-wide approach to explaining variation in potentially avoidable emergency admissions: national ecological study

Open Access
  1. Jon Nicholl1
  1. 1Medical Care Research Unit, ScHARR, School of Health and Related Research (ScHARR), University of Sheffield, Sheffield, UK
  2. 2Sheffield Emergency Care Forum, Sheffield, UK
  1. Correspondence to Professor Alicia O'Cathain, School of Health and Related Research (ScHARR), University of Sheffield, Regent Street, Sheffield S1 4DA, UK; a.ocathain{at}sheffield.ac.uk
  • Received 19 March 2013
  • Revised 10 July 2013
  • Accepted 11 July 2013
  • Published Online First 31 July 2013

Abstract

Background Some emergency admissions can be avoided if acute exacerbations of health problems are managed by the range of health services providing emergency and urgent care.

Aim To identify system-wide factors explaining variation in age sex adjusted admission rates for conditions rich in avoidable admissions.

Design National ecological study.

Setting 152 emergency and urgent care systems in England.

Methods Hospital Episode Statistics data on emergency admissions were used to calculate an age sex adjusted admission rate for conditions rich in avoidable admissions for each emergency and urgent care system in England for 2008–2011.

Results There were 3 273 395 relevant admissions in 2008–2011, accounting for 22% of all emergency admissions. The mean age sex adjusted admission rate was 2258 per year per 100 000 population, with a 3.4-fold variation between systems (1268 and 4359). Factors beyond the control of health services explained the majority of variation: unemployment rates explained 72%, with urban/rural status explaining further variation (R2=75%). Factors related to emergency departments, hospitals, emergency ambulance services and general practice explained further variation (R2=85%): the attendance rate at emergency departments, percentage of emergency department attendances converted to admissions, percentage of emergency admissions staying less than a day, percentage of emergency ambulance calls not transported to hospital and perceived access to general practice within 48 h.

Conclusions Interventions to reduce avoidable admissions should be targeted at deprived communities. Better use of emergency departments, ambulance services and primary care could further reduce avoidable emergency admissions.

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 3.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/3.0/

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