The Pack Years Calculator calculates pack years in patients who smoke.

A pack year is the equivalent of smoking one standard pack of cigarettes (20 cigarettes) per day for the whole year. Calculating pack years describes how many cigarettes you've smoked in your lifetime. More pack years correlate with higher lung disease risk.

计算“烟包年”（pack year）的作用在于评估吸烟者的累积吸烟量，这对理解吸烟对健康的潜在影响非常重要，特别是在医学和公共卫生领域。 具体来说，计算烟包年有以下几个主要作用：

A pack-year is a clinical quantification of cigarette smoking used to measure a person's exposure to tobacco. This is used to assess their risk of developing lung cancer or other pathologies related to tobacco use.

2023年11月17日 · Pack years is a standard measure of how much you've smoked and how that smoking affects your risk of lung cancer and heart disease. It is determined by multiplying the years you've smoked by the number of cigarettes per day.

2022年7月28日 · 包年（pack-years）的概念 在调整了潜在的混杂变量后，研究者分别评估了不同吸烟包年数人群的心衰发病率。 结果显示，吸烟超过25包年的人心衰风险是从未吸烟者的2倍，吸烟超过10包年就已经开始与HFpEF或HFrEF风险增加有关。

2023年1月3日 · Pack-years is a clinical and research approach that helps us better understand a person’s exposure to smoking. It can be very general or get more detailed when we start including factors like the age at which a person began smoking, the volume they smoked during the time when they did, and the date when they quit, if that’s something they ...

A pack year is defined as twenty cigarettes smoked everyday for one year. People who smoke often vary their smoking habits over the years which can make it difficult to create a pack score. This smoking pack year calculator simplifies the task.

2025年2月26日 · Pack years quantify smoking exposure over time, serving as a vital metric to assess cumulative health risks from smoking. The pack year formula is straightforward: divide the number of cigarettes smoked daily by 20 (cigarettes per pack), then multiply by …

A way to measure the amount a person has smoked over a long period of time. It is calculated by multiplying the number of packs of cigarettes smoked per day by the number of years the person has smoked. For example, 1 pack year is equal to smoking 1 pack per day for 1 year, or 2 packs per day for half a year, and so on.