Table 2.

Data^a collected in the ELFE study (2011–16)

	Delivery	2 months	1 year	2 years	3.5 years	4–5 years
Sociodemographic data
Household composition		M	M	M	MorF	–
Familial situation	M	M	M	M	MorF	–
Education level	M	MF	MF	M	MorF	–
Employment status	M	MF	MF	M	MorF	–
Earnings and life conditions	–	F	F	MF	MorF	–
Family life
Arguments between parents	–	MF	–	MF	–	–
Language spoken at home	–	MF	M	–	MorF	–
Educational practices	–	MF	MF	–	MorF	–
Infant/child feeding	M	M,/b	M	MF	MorF	–
Equipment in cultural goods (TV, books, music player, computer…)	–	–	F	F	MorF	–
Description and perception of home environment	–	–	F	F	–	–
Housing		MF	MF	MF	MorF	–
Day care and school
Type, schedule	–	M	M	M	MorF	–
Parental, child choice/satisfaction	–	MF	MF	M	MorF	–
Parental health, behaviour, life values						–
Pregnancy-related	M,	M	–	–	–	–
Maternal exposure during pregnancy	M, M	M	–	MF	MorF	–
Anthropometry	M,MF	MF	–	–		–
Depression	M	MF	MF	MF	MorF	–
History of asthma/allergy	–	MF	–	–	–	–
Hospitalization	M,	M	–	–	–	–
Chronic diseases	M,	MF	–	–	–	–
Smoking	M	MF	MF	–	–	–
Sleep	–	MF	–	–	–	–
Diet, alcohol	M, MF	–	–	–	–	–
Life value	–	MF	MF	MF	–	–
Physical activity	M	–	–	MF	–	–
Dental health	–	–	MF	–	–	–
Mental health	M	MF	MF	MF	–	–
Child health and development
Birth-related		–	–	–	–	–
General health	–	M	M	M	MorF	–
Health care use and reasons	M,	M	M	M,	MorF	–
Accident	–	M	M	M	MorF
Anthropometry		M	M	M,
Urogenital, endocrine		–	M
Respiratory health		M	M	M,	MorF	–
Allergies	–	M	–	M,	MorF	–
Hearing, vision		–	M	M,	MorF, C
Dental health	–	–	–	M	MorF
Sleeping	–	–	M	M	MorF
Vaccination	–	M	M	M,
Cognitive and motor development		M	M	M,	MorF, C
Child school performance						, T
Child behaviour	–
Physical (in)activity	–	–	–	MF	MorF,C	–
Socialization	–	–	M	M	MorF	–
Mental health	–	–	M	M	MorF
Child environmental exposures
Ultraviolet radiation	–	–	–	–	MorF	–
Ionizing radiation	–	M	M	M	MorF	–
Electromagnetic fields	–	F	–	MF	MorF	–
Indoor contaminants	–	F		F	MorF	–
Pesticides	–	F	–	–	MorF	–
Home dust samples	–	x	–	–	x	–

The table specifies whether information was collected through health records or physician (), self-administered () or web () questionnaires, face-to-face interview or test by survey technician (), telephone interview (), environmental, biological sampling (x).

Questions asked to: M mother, F father, F(M) father or mother if father is not participating, MorF mother or father if mother not available, C child, T teacher.

^aSome data have been collected only on subsamples (see Table 3).

^bInfant feeding data for the period 2–10 months collected monthly by or .