The Hokkaido Birth Cohort Study on Environment and Children’s Health: cohort profile—updated 2017

Table 1 Follow-ups performed at different ages

	Neurobehavioral development	Allergy	Anthropometric measurements/puberty
Sapporo cohort
6–7 months	BSID-II, FTII, EES
1.5 years	BSID-II, DDST, EES	ISAAC	Health checkup data
3.5 years	K-ABC, CBCL, WAIS-R, EES	ISAAC	Health checkup data
7 years	WISC-III, WCST-KFS, CBCL, J-PSAI, 2D/4D	ISAAC	Health checkup data
12 years			Tanner staging, onset of puberty
Hokkaido cohort
1 year		ISAAC, ATS-DLD	Health checkup data
1.5 years	M-CHAT
2 years		ISAAC	Health checkup data
3 years	KIDS, SDQ
4 years		ISAAC	Health checkup data
5 years	SDQ, DCDQ
6 years	ADHD-RS, ASQ
7 years		ISAAC, home visit	Health checkup data
8 years	ADHD-RS, Conners 3P, ASQ, CBCL, J-PSAI, WISC-IV
9 years			Tanner staging, onset of puberty

ADHD-RS Attention Deficit Hyperactivity Disorder-Rating Scale, ASQ Autism Screening Questionnaire, ATS-DLD American Thoracic Society-Division of Lung Disease, M-CHAT Modified Checklist for Autism in Toddlers, BSID-II Bayley Scales of Infant Development second edition, CBCL Child Behavior Checklist, Conners 3P Conner’s 3rd Edition for Parents, DCDQ Developmental Coordination Disorder Questionnaire, DDST Denver Developmental Screening Tests, EES Evaluation of Environmental Stimulation, FTII Fagan Test of Infant Intelligence, ISAAC International Study of Asthma and Allergies in Childhood, J-PSAI Japanese Pre-School Activities Inventory, K-ABC Kaufman Assessment Battery for Children, KIDS Kinder Infant Development Scale, SCQ Social Communication Questionnaire, SDQ Strengths and Difficulties Questionnaire, WAIS-R Wechsler Adult Intelligence Scale-Revised, WISC-III Wechsler Intelligence Scale for Children third edition, WCST-KFS Wisconsin Card Sorting Test (Keio Version), WISC-IV Wechsler Intelligence Scale for Children fourth edition

ISSN: 1347-4715