Age
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Gender
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The number of years you have smoked in your life time (subtract the years you gave up smoking before restarting).
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Family history of Lung cancer ( i.e. first degree relative – brother, sister, mother, father, son, daughter)
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Previous history of other cancer: (i.e. breast, prostate, colon etc. except for non-melanomatous skin cancer)
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Previous history of Pneumonia ( at any age).
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Exposure to Asbestos ( e.g. occupations – asbestos worker, insulators if pipes, ship yard worker,
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plumber or fitter where asbestos is used. Or asbestos discovered in the building you are living or working in.
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