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Validity of reported data in the Swedish Cardiac Arrest Register in selected parts in Sweden

Stromsoe, A.; Svensson, L.; Axelsson, A. B.; Goransson, K.; Todorova, Lizbet LU and Herlitz, J. (2013) In Resuscitation 84(7). p.952-956
Abstract
Aim: To describe differences and similarities between reported and non-reported data in the Swedish Cardiac Arrest Register in selected parts in Sweden. Methods: Prospective and retrospective data for treated OHCA patients in Sweden, 2008-2010, were compared in the Swedish Cardiac Arrest Register. Data were investigated in three Swedish counties, which represented one third of the population. The recording models varied. Prospective data are those reported by the emergency medical service (EMS) crews, while retrospective data are those missed by the EMS crews but discovered afterwards by cross-checking with the local ambulance register. Result: In 2008-2010, the number of prospectively (n = 2398) and retrospectively (n = 800) reported OHCA... (More)
Aim: To describe differences and similarities between reported and non-reported data in the Swedish Cardiac Arrest Register in selected parts in Sweden. Methods: Prospective and retrospective data for treated OHCA patients in Sweden, 2008-2010, were compared in the Swedish Cardiac Arrest Register. Data were investigated in three Swedish counties, which represented one third of the population. The recording models varied. Prospective data are those reported by the emergency medical service (EMS) crews, while retrospective data are those missed by the EMS crews but discovered afterwards by cross-checking with the local ambulance register. Result: In 2008-2010, the number of prospectively (n = 2398) and retrospectively (n = 800) reported OHCA cases was n = 3198, which indicates a 25% missing rate. When comparing the two groups, the mean age was higher in patients who were reported retrospectively (69 years vs. 67 years; p = 0.003). There was no difference between groups with regard to gender, time of day and year of OHCA, witnessed status or initial rhythm. Bystander cardiopulmonary resuscitation (CPR) was more frequent among patients who were reported prospectively (65% vs. 60%; p = 0.023), whereas survival to one month was higher among patients who were reported retrospectively (9.2% vs. 11.9%; p = 0.035). Conclusion: Among 3198 cases of OHCA in three counties in Sweden, 800 (25%) were not reported prospectively by the EMS crews but were discovered retrospectively as missing cases. Patients who were reported retrospectively differed from prospectively reported cases by being older, having less frequently received bystander CPR but having a higher survival rate. Our data suggest that reports on OHCA from national quality registers which are based on prospectively recorded data may be influenced by selection bias. (C) 2013 Elsevier Ireland Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Characteristics, Cardiac arrest, Register, Survival, Validity
in
Resuscitation
volume
84
issue
7
pages
952 - 956
publisher
Elsevier
external identifiers
  • wos:000320997000023
  • scopus:84878843854
ISSN
1873-1570
DOI
10.1016/j.resuscitation.2012.12.026
language
English
LU publication?
yes
id
538985e4-45b2-4b1a-ac71-bd9b75bab320 (old id 3979750)
date added to LUP
2013-09-02 07:29:53
date last changed
2019-09-15 03:24:13
@article{538985e4-45b2-4b1a-ac71-bd9b75bab320,
  abstract     = {Aim: To describe differences and similarities between reported and non-reported data in the Swedish Cardiac Arrest Register in selected parts in Sweden. Methods: Prospective and retrospective data for treated OHCA patients in Sweden, 2008-2010, were compared in the Swedish Cardiac Arrest Register. Data were investigated in three Swedish counties, which represented one third of the population. The recording models varied. Prospective data are those reported by the emergency medical service (EMS) crews, while retrospective data are those missed by the EMS crews but discovered afterwards by cross-checking with the local ambulance register. Result: In 2008-2010, the number of prospectively (n = 2398) and retrospectively (n = 800) reported OHCA cases was n = 3198, which indicates a 25% missing rate. When comparing the two groups, the mean age was higher in patients who were reported retrospectively (69 years vs. 67 years; p = 0.003). There was no difference between groups with regard to gender, time of day and year of OHCA, witnessed status or initial rhythm. Bystander cardiopulmonary resuscitation (CPR) was more frequent among patients who were reported prospectively (65% vs. 60%; p = 0.023), whereas survival to one month was higher among patients who were reported retrospectively (9.2% vs. 11.9%; p = 0.035). Conclusion: Among 3198 cases of OHCA in three counties in Sweden, 800 (25%) were not reported prospectively by the EMS crews but were discovered retrospectively as missing cases. Patients who were reported retrospectively differed from prospectively reported cases by being older, having less frequently received bystander CPR but having a higher survival rate. Our data suggest that reports on OHCA from national quality registers which are based on prospectively recorded data may be influenced by selection bias. (C) 2013 Elsevier Ireland Ltd. All rights reserved.},
  author       = {Stromsoe, A. and Svensson, L. and Axelsson, A. B. and Goransson, K. and Todorova, Lizbet and Herlitz, J.},
  issn         = {1873-1570},
  keyword      = {Characteristics,Cardiac arrest,Register,Survival,Validity},
  language     = {eng},
  number       = {7},
  pages        = {952--956},
  publisher    = {Elsevier},
  series       = {Resuscitation},
  title        = {Validity of reported data in the Swedish Cardiac Arrest Register in selected parts in Sweden},
  url          = {http://dx.doi.org/10.1016/j.resuscitation.2012.12.026},
  volume       = {84},
  year         = {2013},
}