Smoking classification

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Seyedmahdi Pahlavani, M.D. [2]

Smoking may be classified as heavy and non-heavy, depending on the number of cigarettes consumed per day. Smokers can also be classified with respect to duration as acute or chronic smokers.

Smoking and smokers can be classified with respect to quantity and the duration of smoking.

Smoking may be classified based on the number of cigarettes per day multiplied by the duration of smoking as years (pack per year) to:

• Heavy smokers
  • More than 20 packs per year (p/y)
• Non-heavy smokers
  • Less than 20 p/y

With respect to the duration of smoking, smokers can be classified as:

• Acute
• Chronic

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