School of Health and Social Sciences, University of Dalarna, SE-791 88 Falun, Sweden.
Resuscitation. 2013 Jul;84(7):952-6. doi: 10.1016/j.resuscitation.2012.12.026. Epub 2013 Jan 8.
To describe differences and similarities between reported and non-reported data in the Swedish Cardiac Arrest Register in selected parts in Sweden.
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.
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).
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.
描述瑞典心脏骤停登记处报告和未报告数据在瑞典部分地区的差异和相似之处。
对瑞典 2008-2010 年接受治疗的院外心脏骤停患者的前瞻性和回顾性数据在瑞典心脏骤停登记处进行了比较。在三个代表瑞典三分之一人口的县进行了数据调查。记录模型有所不同。前瞻性数据是由紧急医疗服务（EMS）人员报告的数据，而回顾性数据是 EMS 人员遗漏但后来通过与当地救护车登记处交叉核对发现的数据。
2008-2010 年，前瞻性（n=2398）和回顾性（n=800）报告的 OHCA 病例数为 n=3198，表明漏报率为 25%。比较两组患者时，回顾性报告的患者年龄较高（69 岁比 67 岁；p=0.003）。两组患者在性别、一天中的时间和 OHCA 年份、目击状态或初始节律方面无差异。前瞻性报告的患者中旁观者心肺复苏（CPR）更常见（65%比 60%；p=0.023），而回顾性报告的患者一个月生存率更高（9.2%比 11.9%；p=0.035）。
在瑞典三个县的 3198 例 OHCA 病例中，800 例（25%）未被 EMS 人员前瞻性报告，但作为遗漏病例被回顾性发现。与前瞻性报告的病例相比，回顾性报告的病例年龄更大，旁观者 CPR 接受率较低，但生存率更高。我们的数据表明，基于前瞻性记录数据的国家质量登记处报告的 OHCA 可能受到选择偏差的影响。
