Centre for Clinical Epidemiology and Biostatistics, University of Newcastle, Newcastle, NSW
Centre for Clinical Epidemiology and Biostatistics, University of Newcastle, Newcastle, NSW.
Med J Aust. 2017 Feb 20;206(3):126-130. doi: 10.5694/mja16.00640.
To determine the extent to which physical activity reduces the number of hospital bed-days for Australians over 55, using an objective measure of activity.
DESIGN, SETTING AND PARTICIPANTS: 9784 Newcastle residents aged 55 years or more were invited to participate. 3253 responders were eligible and wore pedometers for one week during 2005-2007; their hospital data from recruitment to 31 March 2015 were analysed (mean follow-up time: 8.2 years). Complete data for 2110 people were available for analysis.
Mean annual hospital bed-days, according to individual step count.
There was a statistically significant reduction in the number of hospital bed-days associated with higher step counts; the incidence rate ratio per extra 1000 steps per day at baseline was 0.91 (95% CI, 0.90-0.94). The disease-specific reductions were significant for admissions for cancer and diabetes, but not for cardiovascular disease. The difference between 4500 and 8800 steps per day (the upper and lower quartile boundaries for step count) was 0.36 bed-days per person per year, after adjusting for age, sex, number of medications, number of comorbidities, smoking and alcohol status, and education. When analysis was restricted to hospital admissions after the first 2 years of follow-up, the difference was 0.29 bed-days per person per year.
More active people require less hospital care, and an achievable extra 4300 steps per day would result in an average of one less day in hospital for each 3 years of life.
使用活动的客观测量方法，确定身体活动减少 55 岁以上澳大利亚人住院天数的程度。
设计、地点和参与者：邀请了 9784 名纽卡斯尔居民（年龄在 55 岁或以上）参加。3253 名符合条件的应答者在 2005-2007 年期间佩戴计步器一周；对他们从招募到 2015 年 3 月 31 日的医院数据进行了分析（平均随访时间：8.2 年）。2110 人的完整数据可用于分析。
根据个人计步数计算的平均年住院天数。
与较高的计步数相关，住院天数呈统计学显著减少；基线时每天额外增加 1000 步的发病率比为 0.91（95%CI，0.90-0.94）。特定疾病的减少在癌症和糖尿病的入院方面显著，但在心血管疾病方面不显著。每天 4500 步和 8800 步（计步计数的上下四分位边界）之间的差异为 0.36 人/年/天，调整年龄、性别、药物数量、合并症数量、吸烟和饮酒状况以及教育程度后。当分析仅限于随访前 2 年的住院时，差异为 0.29 人/年/天。
更活跃的人需要更少的医院护理，每天额外增加 4300 步，平均每年可减少一天住院。
