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. 2022 May 19;12(5):e058913. doi: 10.1136/bmjopen-2021-058913

Table 1.

Sample characteristics of adolescents in six countries (weighted) n=9171

Characteristic All countries (n=9171) Australia (n=1127) Canada (n=2869) Chile (n=1124) Mexico (n=1505) UK
(n=1140)
USA (n=1406)
% (n)
Age (years)
 10–13 50 (4551) 51 (574) 50 (1438) 47 (534) 50 (750) 49 (562) 49 (693)
 14–17 50 (4620) 49 (553) 50 (1431) 53 (590) 50 (755) 51 (578) 51 (713)
Sex
 Male 51 (4664) 52 (582) 50 (1446) 51 (572) 51 (761) 51 (581) 51 (722)
 Female 49 (4507) 48 (545) 50 (1423) 49 (552) 49 (744) 49 (559) 49 (684)
Ethnicity
 Majority group 76 (6976) 75 (850) 73 (2098) 85 (958) 78 (1170) 83 (941) 68 (959)
 Minority group 24 (2195) 25 (277) 27 (771) 15 (166) 22 (335) 17 (199) 32 (447)
School grades
 Low 16 (1461) 32 (365) 13 (373) 6 (65) 7 (101) 29 (334) 16 (223)
 Mid 38 (3508) 38 (430) 34 (974) 49 (555) 36 (549) 38 (430) 41 (570)
 High 46 (4202) 29 (332) 53 (1522) 45 (505) 57 (855) 33 (375) 44 (613)
Perceived income adequacy
 Inadequate 24 (2222) 25 (283) 17 (488) 31 (345) 28 (418) 26 (291) 28 (397)
 Adequate 76 (6949) 75 (844) 83 (2381) 69 (779) 72 (1087) 74 (849) 72 (1009)
Self-reported BMI
 Severe thinness/thinness/normal weight 49 (4480) 45 (509) 57 (1630) 43 (478) 48 (717) 41 (462) 49 (683)
 Overweight 18 (1665) 16 (176) 16 (473) 21 (231) 22 (334) 13 (147) 22 (304)
 Obesity 10 (927) 10 (113) 9 (255) 9 (97) 10 (148) 8 (92) 16 (222)
 Not reported 23 (2100) 29 (328) 18 (511) 28 (319) 20 (306) 39 (439) 14 (197)

BMI, body mass index.