Table 2

Participants and locations

Age
AuthorsAdolescents (10–24 years old)Adults
(25+ years old)
Boy/girl ratioLocationN total
Chaput et al 20113615–19All boysDenmark22
Desai et al 20102514–181845/2139USA3984
DiFrancisco-Donoghue et al 20192618–22N/AUSA & Canada65
Exelmans et al 2015271894370/474Belgium844
Hellström et al 20152813–183872/3885Sweden7757
Scharrer et al 20143513–15105/69Mid-Atlantic states, USA176
Mario et al 2014291827All boysUnited Kingdom45
Rudolf et al 2020332030980/86Germany1066
Smyth et al 20073418–2073/27New York, USA100
Wallenius et al 20093212–182500/1585Finland4085
Weaver et al 2009301990271/291Seattle, USA562
Zapata et al 20063114376/415São Paulo, Brazil791