Assessment from Preschool to Puberty (APPLE)
The APPLE study is a prospective population-based study tracking children from 5 years of age until their adolescence (age 12). The study was established to clarify the role of early developmental profiles on the patterns of their developmental trajectories and mental health outcomes in adolescence. Five-year-old children who resided in Hirosaki city, Japan, between 1 April 2013 and 31 March 2016, were recruited for the study annually in a sequential design. Nearly 4,000 five-year-old children participated in the screening phase.
Study design
Cohort - birth
Number of participants at first data collection
3,954 (participants)
Age at first data collection
5 years (participants)
Participant year of birth
2008 - 2011 (participants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
2013
Primary Institutions
Hirosaki University
University of California, San Francisco (UCSF)
Links
No website available
Profile paper DOI
Funders
Hirosaki University
Japan Society for the Promotion of Science (JSPS)
Ongoing?
Yes
Data types collected
- Computer, paper or task testing (e.g. cognitive testing, theory of mind doll task, attention computer tasks)
- Interview – face-to-face
- Self-report questionnaire – paper or computer assisted
- None
- None
- Healthcare data
Engagement
Keywords
