Table 1 Data collected during the survey^a

Demographics

(Parents and/or children)

Age, sex, ethnic group, occupation, education level, health status, birth weight, school, grade, class, number of siblings

Family

Family structure, history of family diseases

Medical record

Dental caries, anemia, overweight/obese, myopia, farsightedness, amblyopia, bronchitis, pneumonia, asthma, accidental injury

Physical examination

General body check-up; ear, nose, throat, eye and oral examination

Anthropometry data

Height, weight, waist circumference, hip circumference and blood pressure

Living conditions

House type, passive smoking exposure, house renovation, floor board, furniture, pet ownership, air conditioning, ventilation, cooking and heating fuel

Dietary behavior and lifestyles

Dietary habits, exercise, outdoor activities, homework, watching TV, sleep time and quality, tooth brushing

Bioanalysis

Routine blood and urine test; intestinal parasite infections