Table 1.
Summary of investigations at the baseline survey.
| Investigations | No. of variables | Variables |
|---|---|---|
| Questionnaire | ||
| Demographics and socio-economic characteristics | 13 | Name, sex, race, national ID number, present address, contact information, occupation, company name, household income, family number, education, marital status, and type of medical insurance |
| Health care products | 12 | Vitamin A, vitamin B, vitamin C, vitamin D, vitamin E, multivitamins, calcium, iron, zinc, fish oil/DHA, ginseng, and other dietary supplements |
| Health status | 49 | Sleep quality, stress life events, Patient Health Questionnaire (PHQ-9), Generalized Anxiety Disorder scale (GAD-7) |
| Reproductive history | 10 | Age of menarche, menopause status, age of menopause, history of menopausal drug use, experience of pregnancy, history of breast feeding, age at parturition of each live birth, duration of breast feeding, experience of assisted reproductive technology, history of intrauterine contraceptive device, history of contraceptive pills use |
| Diet | 131 | A 110-item food frequency questionnaire (FFQ), cooking methods of meat, vegetables, and seafoods, dietary habits |
| Individual living habits | 36 | Smoking status, age at starting smoking, number of cigarettes per day, depth of smoking, current smoking status, smoking situation today, changes in smoking, drinking status, age at starting drinking, symptoms of drinking, current drinking status, changes in drinking, status of tea drinking, age at starting tea drinking, frequency of changing tea per day, changes in tea drinking, status of carbonated drinks drinking, age at starting carbonated drinks drinking, current status of carbonated drinks drinking, changes in carbonated drinks drinking, status of coffee drinking, age at starting coffee drinking, current status of coffee drinking, changes in coffee drinking |
| Passive smoking and indoor air pollution | 28 | Passive smoking exposure, indoor air pollution, pesticide exposure |
| Physical activity | 25 | Occupational physical activity, transportation physical activity, leisure-time physical activity, high intensive physical activity, housework, weight changes during last 12 months, weight and height at 25 years old |
| Past medical history | 8 | History of disease and history of surgery |
| Family history | 2 | Cancers diagnoses and age/dates for first-degree relatives |
| Anthropometric measurement | 4 | Height, weight, waist circumference, hip circumference |
| Clinical information | 5 | Histological type, histopathologic grade, FIGO stage, residual lesions, comorbidities |