Summary of measurements at the baseline survey in the Environment and Chronic Disease in Rural Areas of Heilongjiang, China Cohort study
| Measurements | Variables |
| Electronic questionnaire | |
| Demographics and socioeconomic status | National ID number, home address, date of birth, sex, marital status, ethnic group, education, occupation, type of medical insurance, contact information, household registration status, annual income, poor household |
| Health status | Smoking status, smoking cessation, passive smoking exposure, frequency of drinking, types of drink, amount of alcohol consumption, family and personal disease history, medication history, physical activity, sleep habits |
| Reproductive history (for women) | Age of menarche, menopause status, experience of pregnancy, history of breast feeding, history of contraceptive pills uses, history of hysterectomy and ovary/breast surgery, history of intrauterine contraceptive device |
| Diet | Cooking oil and salt consumption, Food Frequency Questionnaire, nutritional supplements intake, history of severe food shortage |
| Indoor temperature and air pollution in winter | Temperature in work place, somatosensory temperature, fuel used during cooking and heating |
| Psychological assessment | Self-Rating Depression Scale and Self-Rating Anxiety Scale |
| Medical examination | |
| Physical examination | Height, weight, waist circumferences, fasting blood pressure (measured three times, OMRON HEM-8711), fasting heart rate (measured three times, OMRON HEM-8711) |
| Lung function | Vital capacity and forced vital capacity (OMRON HI-101) |
| Glucose spot detection | Blood glucose detection |
| Body composition analyse | Body composition analyser |
| Urine | Specific gravity, urobilinogen, urinary bilirubin, urinary ketone body, urine glucose, urinary protein, pH, urine nitrite |
| ECG | 12-Lead ECG (NIHON KOHDEN ECG-2350) |
| Clinical laboratory test | |
| Lipid levels | Triglycerides, cholesterol, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol |
| Hepatic function | Total protein, albumin, globulin, alanine transaminase, aspartate amino transferase, gamma-glutamyl transpeptidase, alkaline phosphatase, total bilirubin |
| Kidney function | Creatinine, urea, uric acid |
| Blood glucose | Blood glucose |
| Urine | N-acetyl-β-D-glucosaminidase, microalbumin |
| Ion | Iron, magnesium, zinc, calcium, phosphorus, copper |
| Cardiac function | Creatine kinase isomer-MB, creatine kinase, lactate dehydrogenase |