Table 1.

Summary of data items in the WHZH cohort

Category	Measurements
Demographics and socioeconomics	Birthday, residential address, race, religion, housing conditions, household income, education, work status, occupation, marital status
Life style	Diet, smoking, alcohol consumption, tea, physical activity, sleep, afternoon nap, pets, plants
Family history of diseases	Family history of hypertension, hyperlipidemia, coronary heart disease, diabetes, stroke, cancers, emphysema, chronic bronchitis, asthma, pulmonary tuberculosis, chronic hepatitis, nephritis and arthritis
Past medical history	Diagnosed medical conditions, use of health services, use of medicines for the most recent two weeks
Environmental exposure	Occupational history, environmental tobacco smoke, exposure to traffic, cooking and heating mode, the use of exhaust fan
Anthropometrics	Height, weight, waist circumference, hip circumference
Clinical test	Blood pressure, heart rate, lung function, heart rate variability, exhaled nitric oxide, exhaled carbon monoxide, cardiopulmonary auscultation, smell, tendon reflexes, skin punctures
Biochemiacl analysis of blood and urine	Total cholesterol, LDL-cholesterol, HDL-cholesterol, triglycerides, fasting plasma glucose, alanine aminotransferase, complete blood count, urine routine test, urinary PAH metabolites, 23 urinary metals