Table 1 Demographic characteristics of study participants

From: When ignorance is bliss: weight perception, body mass index and quality of life in adolescents

Variable

Total (N=3040)

Male (n=1706)

Female (n=1334)

P

 

M (s.d.)

M (s.d.)

M (s.d.)

 

Age

14.62 (1.38)

14.59 (1.34)

14.65 (1.42)

0.23

Height

164.84 (9.68)

167.50 (10.55)

161.44 (7.10)

<0.001

Weight

59.61 (13.40)

61.15 (14.33)

57.63 (11.84)

<0.001

BMI

21.78 (3.81)

21.59 (3.72)

22.03 (3.91)

<0.01

BMI-z

0.55 (1.04)

0.58 (1.06)

0.52 (1.03)

0.18

PedsQL

 Global

78.77 (10.40)

79.57 (10.28)

77.74 (10.47)

<0.001

 Psychosocial

74.76 (12.33)

75.30 (12.26)

74.08 (12.38)

<0.01

 Physical

86.38 (9.57)

87.82 (8.90)

84.56 (10.01)

<0.001

Weight status (3-category)

N (%)

N (%)

N (%)

 

 Thinness/normal

2026 (68.58)

1139 (68.61)

887 (68.55)

 

 Overweight

649 (21.97)

352 (21.20)

297 (22.95)

 

 Obesity

279 (9.44)

169 (10.18)

110 (8.50)

0.50

Weight perception

 Underweight

469 (15.88)

312 (18.80)

157 (12.13)

 

 About the right weight

1734 (58.70)

979 (58.98)

755 (58.35)

 

 Overweight

751 (25.42)

369 (22.23)

382 (29.52)

<0.001

  1. Abbreviations: BMI, body mass index; BMI-z, standardised body mass index; M, mean; PedsQL, Paediatric Quality of Life Inventory. Bolded values are significant at P<0.01.