身体活动和电视观看时间与死亡率的关系是否强大到令人困惑? 一项使用E值的研究,来自墨尔本协作队列研究
Baldwin Pok Man Kwan1, Brigid M Lynch1,2,3, Lara Edbrooke4,5
1Melbourne School of Population and Global Health, The University of Melbourne, Carlton, VIC, Australia.
Journal of physical activity & health
|September 25, 2024
概括
定期体力活动与较低的死亡风险有关,而大量的电视观看时间可能会增加死亡风险. 该研究评估了澳大利亚成年人的这些关联,并考虑了潜在的混因素.
科学领域:
- 流行病学 流行病学
- 公共卫生 公共卫生
- 预防医学 预防医学
背景情况:
- 身体活动和久坐不动行为显著影响健康结果.
- 混偏见可能会影响有关这些行为证据的解释.
- 在不同的人群中调查这些关联对于公共卫生战略至关重要.
研究的目的:
- 检查身体活动水平和电视 (电视) 观看时间与全因,心血管和癌症死亡率之间的关系.
- 评估这些观察到的关联与残留和未测量的混的稳定性.
- 为了解影响澳大利亚成年人死亡率的生活方式因素提供见解.
主要方法:
- 利用了来自墨尔本协作队列研究 (平均年龄66岁) 的27317名参与者的数据.
- 使用国际体育活动问卷-简单表格和电视观看时间来评估体育活动,将其分为不同的类别.
- 采用多变量考克斯回归模型和计算E值来量化未测量的混因子的影响.
主要成果:
- 较高的体力活动与减少全因和心血管死亡率有关 (HR分别为0.67和0.72).
- 较高的体力活动与癌症死亡率的关联较弱 (HR 0.72).
- 增加电视观看时间与较高的全因死亡率 (HR 1.08) 和心血管和癌症死亡率的类似趋势有关.
结论:
- 身体活动和看电视的时间显示,澳大利亚成年人与死亡率有显著的关联.
- 身体活动对所有原因和心血管死亡的保护作用似乎中等强大到令人困惑.
- 身体活动和癌症死亡率,电视观看时间和所有死亡率之间的关联,对未测量的混来说不那么强大.
相关概念视频
Cause and Effect
10.5K
While variables are sometimes correlated because one does cause the other, it could also be that some other factor, a confounding variable, is actually causing the systematic movement in our variables of interest. For instance, as sales in ice cream increase, so does the overall rate of crime. Is it possible that indulging in your favorite flavor of ice cream could send you on a crime spree? Or, after committing crime do you think you might decide to treat yourself to a cone?
10.5K
Introduction to Epidemiology
2.4K
Epidemiology, known as the cornerstone of public health, involves studying the distribution and determinants of health-related events in defined populations and applying these insights to control health issues. This is essential for understanding how diseases spread, identifying populations at greater risk, and implementing measures to control or prevent outbreaks. Epidemiology addresses not only infectious diseases but also non-communicable conditions like cancer and cardiovascular disease,...
2.4K
Causality in Epidemiology
2.2K
Causality or causation is a fundamental concept in epidemiology, vital for understanding the relationships between various factors and health outcomes. Despite its importance, there's no single, universally accepted definition of causality within the discipline. Drawing from a systematic review, causality in epidemiology encompasses several definitions, including production, necessary and sufficient, sufficient-component, counterfactual, and probabilistic models. Each has its strengths and...
2.2K
Confounding in Epidemiological Studies
1.1K
Confounding in statistical epidemiology represents a pivotal challenge, referring to the distortion in the perceived relationship between an exposure and an outcome due to the presence of a third variable, known as a confounder. This variable is associated with both the exposure and the outcome but is not a direct link in their causal chain. Its presence can lead to erroneous interpretations of the exposure's effect, either exaggerating or underestimating the true association. This...
1.1K
Bias in Epidemiological Studies
1.7K
Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
1.7K
Lifestyle Factors and Health
699
Lifestyle factors play a critical role in maintaining overall health and preventing chronic diseases. Key elements, such as regular physical activity, a nutritious diet, and abstinence from smoking, can significantly enhance physical, mental, and emotional well-being while reducing the risk of several life-threatening conditions.
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
Benefits of Physical Activity
Physical activity, whether through structured exercise or casual activities like walking, biking, or dancing, is a cornerstone of a...
699


