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Table 1 Descriptive characteristics for the participants in this study (n = 389)

From: Associations between the duration of active commuting to school and academic achievement in rural Chilean adolescents

Girls, n (%)

193 (49.6)

 Age, years

12.0 ± 0.6

Weight status a

 Underweight, n (%)

4 (1.0)

 Normal, n (%)

172 (44.2)

 Overweight, n (%)

115 (29.6)

 Obesity, n (%)

98 (25.2)

Birth weight

 Low birth weight (≤2500 g), n (%)

20 (5.1)

Self-reported physical activity

 High b

72 (18.5)

Sedentary behaviour

 Exceeding recommended limits c, n (%)

266 (68.4)

Mother’s education

 Level university, n (%)

57 (14.7)

SES

 Low, n (%)

52 (13.4)

 Medium, n (%)

267 (68.6)

 High, n (%)

70 (18.0)

Academic achievement

 Language (1–7)

5.0 ± 0.9

 High academic achievement, n (%)

217 (57.7)

 Mathematics (1–7)

5.3 ± 0.6

 High academic achievement, n (%)

238 (61.3)

Means of transport

 Public transport, n (%)

148 (38.0)

 Car/Motorbike, n (%)

152 (39.1)

Frequency

 Active transport to school, n (%)

89 (22.9)

 Active transport from school, n (%)

111 (28.5)

Duration of ACS d

 Non-ACS, n (%)

273 (70.2)

 ACS ≤30 min, n (%)

55 (14.1)

 ACS 30–60 min, n (%)

40 (10.3)

 ACS ≥60 min, n (%)

21 (5.4)

  1. Values are means (standard deviations ± SD) and number and proportions (%) for categorical data. ACS, active commuting to school; BMI, body mass index; SES, socio economic status. a, Weight status defined as follows: Underweight (z-score < −1 s), Normal weight (z-score from −1 s to 1 s), Obesity risk (z-score from 1 s to 2 s) and Obesity (z-score >2 s); b, Physical activity ≥2.09; c, ≥2 h/day of screen time; d, duration of walking active commuting to school and/or from school