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Table 1 Components of the questionnaire and their sources

From: Investigating socio-economic-demographic determinants of tobacco use in Rawalpindi, Pakistan

Domain Method Source
Age Date of birth. If unavailable, estimation of age with reference to an index event Modified RISKCORN methodology [11]
Education Based on the level of education in Pakistan As above
Socio-economic status Education and income As above
Tobacco use & Smoking Frequency and quantity Duration of exposure Past status Environmental tobacco smoke As above INTERHEART [12]