Table 1. Sample characterization by individual: gender, age, marital status, profession, working status, length of dependence on cigarettes, clinical diagnosis and treatment.

Individual	Characteristics
1	Male, 65 years old, married, retired taxi driver. Tobacco dependence for 39 years, lung neoplasia without anatomopathological confirmation. Chemotherapy and radiotherapy.
2	Female, 58 years old, married, retired domestic maid. Tobacco dependence for 35 years. Lung neoplasia without anatomopathological confirmation. Thoracic drainage, awaiting clinical decision.
3	Female, 68 years old, widow, retired farm worker. Tobacco dependence for 40 years. Lung neoplasia without anatomopathological confirmation. Chemotherapy.
4	Male, 49 years old, married, retired metalworker. Tobacco dependence for 27 years. Non-oat cell carcinoma. Chemotherapy, awaiting radiotherapy.
5	Male, 52 years old, single, retired driver. Tobacco dependence for 30 years. Non-oat cell carcinoma compatible with epidermoid carcinoma. Chemotherapy, awaiting radiotherapy.
6	Male, 46 years old, married, retired mechanic. Tobacco dependence for 30 years. Adenocarcinoma. Surgery (lobectomy), chemotherapy, radiotherapy.
7	Male, 58 years old, married, retired construction worker. Tobacco dependence for 30 years. Oat cell carcinoma. Chemotherapy.
8	Male, 66 years old, single, retired plumber. Tobacco dependence for 60 years. Squamous cell carcinoma. Chemotherapy.
9	Female, 61 years old, widow, retired farm worker. Tobacco dependence for 53 years. Non-oat cell carcinoma compatible with adenocarcinoma. Awaiting clinical decision.
10	Female, 51 years old, divorced, retired farm worker. Tobacco dependence for 3 years. Non oat-cell carcinoma. Chemotherapy.
11	Female, 58 years old, married, domestic maid. Tobacco dependence for 40 years. Adenocarcinoma. Surgery (lobectomy).