Department of Neurology, Orebro University Hospital, Orebro, Sweden.
Cerebrovasc Dis. 2010;30(2):114-9. doi: 10.1159/000314714. Epub 2010 May 22.
Reported improvements in outcome in stroke patients treated in hospital are often attributed to advances in stroke care. However, secular trends in patient characteristics that are present already on admission to hospital may also contribute to improved outcome.
Time trends for baseline data (289,854 stroke admittances) in Riks-Stroke, the Swedish national quality register for stroke care, were analyzed for the years 1995 through 2008. The following data were included: number of strokes for each year, age, sex, risk factors, stroke subtype, stroke severity, functional status and need of external home service before the stroke.
The number of annually reported strokes increased until 2005. The proportion of recurrent strokes decreased from 28.0 to 25.9%. The mean age at first-ever stroke increased in women, but not in men. The proportion of smokers dropped, and the proportion of patients who had treated hypertension increased. The stroke severity decreased in men. The prestroke functional status (walking, dressing, toileting) improved in both sexes over these years. More patients lived alone in 2008 than in 1995, and more had home help service.
Many baseline parameters in Riks-Stroke have changed over the years. This has consequences for the interpretation of outcome data. Some changes may be due to inclusion bias, others due to alterations in general health, evolution of vascular risk factors or demographics.
在医院接受治疗的中风患者的预后改善通常归因于中风治疗的进步。然而，已经存在于入院时的患者特征的长期趋势也可能有助于改善预后。
分析了瑞典国家中风护理质量登记处 Riks-Stroke 中 1995 年至 2008 年的基线数据（289,854 例中风入院）的时间趋势。包括以下数据：每年的中风数量、年龄、性别、危险因素、中风类型、中风严重程度、功能状态以及中风前对外来家庭服务的需求。
每年报告的中风数量增加到 2005 年。复发性中风的比例从 28.0%下降到 25.9%。女性首次中风的平均年龄增加，但男性没有。吸烟者的比例下降，接受高血压治疗的患者比例增加。男性的中风严重程度降低。这些年来，两性的发病前功能状态（行走、穿衣、如厕）都有所改善。2008 年独居的患者比例高于 1995 年，并且有更多的人需要家庭护理服务。
Riks-Stroke 中的许多基线参数多年来发生了变化。这对预后数据的解释产生了影响。一些变化可能是由于纳入偏倚，其他变化可能是由于一般健康状况的改变、血管危险因素或人口统计学的演变。
