Table 1.
Exposure category | Variables |
Socioeconomic status | Household size, aged ≥ 30 years in household Location of father and mother's birthplace Household income, occupation, education, marriage status |
Personal behavior | Smoking, use of computer, mobile phone, and microwave oven, watching of television |
Type of food and drink | Drinking of alcohol, tea, and coffee, consumption of food grains, cooking oil, vegetables, meat, poultry, eggs, fresh milk, preserved milk, fish, bean curd, |
Cooking style | Fuel (coal, gas, natural gas) Boiled, stir-fried, deep-fried, steamed, grilled, cooked |
Environment and occupational exposures | Exposure to chemical solvent, dye, engine oil, gasoline, rubber, plastic product, antiseptic, insecticide, chemical fertilizer, sawdust, asbestos, weaving fiber, dust |
Physical activity | Light, middle, and heavy physical labor, physical output in work, during and after work, and leisure time. |
Family history | Family history of hypertension, coronary artery disease, diabetes, peptic ulcer, cancer, and other chronic diseases Current age, age at death, and cause of death of first- and second-degree relatives |
Medical history | Medical conditions diagnosed by doctors (specifically itemized) |
Use of health services | |
Use of Chinese medicines | |
Use of Western and other medications | |
Reproductive history | Age of menarche, menopause status and associated timing, parity and breastfeeding history |
Use of contraceptives | |
History of use of hormone-replacement therapy | |
Hysterectomy or other gynecological interventions | |
Psychological status | Stress, anger/hostility, social isolation |
Physical examination | Height, weight, waist size, hip size, blood pressure |