Table 2.

The health questionnaire contents of this study

Category	Contents	Age (yr)			Parents (mother)
		≥19	7-18	0-6
Demographic features	Age, sex, residence period	○	○	○	○
Socioeconomic features	Job, education level (parents), income level	○	○		○
Environmental exposure	Indoor-outdoor residence environment	○	○	○	○
Drinking water	Drinking water type	○	○	○	○
Health behavior	Smokinga, drinkingb, exercisec	○	○		○
Clinical symptoms	Clinical diagnosisd	○			○
Pesticide use	Pesticides used, protection equipment usage	○			○
Asthma and allergic effect	ISAAC		○
Neurological development disorder	K-ARS		○
Breast milk	Feeding period, frequency, amount			○
Allergies	Asthma and allergic rhinitis		○	○
Pubertal development	Menarche, voice change, pubic hair		○
Disease history	Family disease history, current symptoms	○	○	○	○

ISAAC, International Study of Asthma and Allergic Diseases in Childhood; K-ARS, Korean attention deficit hyperactivity disorder rating scale.

^aFrequency, period, exposure to environmental tobacco smoke.

^bFrequency and amount, period.

^cFrequency, strength.

^dHypertension, diabetes, tuberculosis, arthritis, hepatitis, cardiac disorder, and kidney disorder.