title: Persisting effect of community approaches to resuscitation.
abstract: BACKGROUND
  On the Danish island of Bornholm an intervention was carried out during 2008-2010 aiming at increasing out-of-hospital cardiac arrest (OHCA) survival. The intervention included mass media focus on resuscitation and widespread educational activities. The aim of this study was to compare the bystander BLS rate and survival after OHCA on Bornholm in a 3-year follow-up period after the intervention took place.
  
  
  METHODS
  Data on OHCA on Bornholm were collected from September 28th, 2010 to September 27th, 2013 and compared to data from the intervention period, September 28th, 2008 to September 27th, 2010.
  
  
  RESULTS
  The bystander BLS rate for non-EMS witnessed OHCAs with presumed cardiac aetiology was significantly higher in the follow-up period (70% [95% CI 61-77] vs. 47% [95% CI 37-57], p=0.001). AEDs were deployed in 22 (18%) cases in the follow-up period and a shock was provided in 13 cases. There was no significant change in all-rhythm 30-day survival for non-EMS witnessed OHCAs with presumed cardiac aetiology (6.7% [95% CI 3-13] in the follow-up period; vs. 4.6% [95% CI 1-12], p=0.76).
  
  
  CONCLUSIONS
  In a 3-year follow-up period after an intervention engaging laypersons in resuscitation through mass education in BLS combined with a media focus on resuscitation, we observed a persistent significant increase in the bystander BLS rate for all OHCAs with presumed cardiac aetiology. There was no significant difference in 30-day survival.
authors.affiliation: Department of Anaesthesia, Centre of Head and Orthopaedics, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark. Electronic address: mnielsen.anne@gmail.com.
authors.forename: Anne Møller
authors.initials: AM
authors.lastname: Nielsen
authors.affiliation: Department of Anaesthesia, Centre of Head and Orthopaedics, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark.
authors.forename: Dan Lou
authors.initials: DL
authors.lastname: Isbye
authors.affiliation: Emergency Medical Services Copenhagen, Copenhagen University, Telegrafvej 5, 2750 Ballerup, Denmark.
authors.forename: Freddy Knudsen
authors.initials: FK
authors.lastname: Lippert
authors.affiliation: Department of Anaesthesia, Centre of Head and Orthopaedics, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100 Copenhagen, Denmark.
authors.forename: Lars Simon
authors.initials: LS
authors.lastname: Rasmussen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016887:Cardiopulmonary Resuscitation / Q000193:education* / Q000379:methods / Q000401:mortality; D016208:Databases, Factual; D003718:Denmark; D004632:Emergency Medical Services / Q000379:methods / Q000706:statistics & numerical data; D005260:Female; D005500:Follow-Up Studies; D006266:Health Education / Q000458:organization & administration*; D006801:Humans; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D058687:Out-of-Hospital Cardiac Arrest / Q000401:mortality* / Q000628:therapy*; D015397:Program Evaluation; D012111:Residence Characteristics / Q000706:statistics & numerical data*; D018570:Risk Assessment; D016019:Survival Analysis; D013997:Time Factors; D016896:Treatment Outcome
keywords: AED; BLS; Community engagement; Education; OHCA; Resuscitation