Identifying and definitional attributes
|Metadata item type:||Data Element|
|Short name:||Tobacco smoking—duration (daily smoking)|
The total duration in years, of daily smoking for a person who is now a daily smoker or has been a daily smoker in the past.
Public health and health care
|Data Element Concept:||Person—tobacco smoking duration|
Value domain attributes
|Maximum character length:||2|
|Unit of measure:||Year|
Data element attributes
Collection and usage attributes
|Guide for use:|
In order to estimate duration of smoking the person's date of birth or current age should also be collected. If a person reports that they smoke daily now then duration is the difference between the start-age and the person's current age. If a person reports that they smoked daily in the past but do not smoke daily now then duration is the difference between the quit age and the start age. Record duration of less than one year as 0.
The recommended standard for collecting this information is the Standard Questions on the Use of Tobacco Among Adults (1998) - interviewer administered (Question 1, 5, 6, 7) and self-administered (Question 1, 3, 3a, 4) versions. The questions cover persons aged 18 years and over.
Duration of daily smoking is an indicator of exposure to increased risk to health. In this data element, duration is measured as the years elapsed from the time the person first started smoking daily and when they most recently quit smoking daily (or the present for those persons who still smoke daily). There may have been intervening periods when the person did not smoke daily. However, as the negative health effects of smoking accumulate over time, the information on duration of daily smoking, as measured in this data element, remains useful, despite any intervening periods of non-daily smoking.
Where this information is collected by survey and the sample permits, population estimates should be presented by sex and 5-year age groups. Summary statistics may need to be adjusted for age and other relevant variables.
It is recommended that in surveys of smoking, data on age, sex and other socio-demographic variables should be collected. It is also recommended that when smoking is investigated in relation to health, data on other risk factors including pregnancy status, physical activity, overweight and obesity, and alcohol consumption should be collected.
|Related metadata references:|
Supersedes Tobacco smoking - duration (daily smoking), version 1, Derived DE, NHDD, NHIMG, Superseded 01/03/2005.pdf (16.7 KB) No registration status
Is formed using Person—tobacco smoking quit age (daily smoking), total years NN
Is formed using Person—tobacco smoking start age (daily smoking), total years NN
|Implementation in Data Set Specifications:|