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Table 1 Characteristics of the participants.

From: Secular trends in adiposity in Norwegian 9-year-olds from 1999-2000 to 2005

Participant Characteristic

1999-2000 (n = 348)

2005

(n = 440)

Age (years)

9.7 (0.3)

9.9 (0.3)

No (%) girls

174 (50)

193 (44)

Height (cm)

139.1 (6.2)

140.7 (6.4)

Weight (kg)

33.3 (5.8)

34.7 (6.7)

BMI (kg/m2)

17.1 (2.2)

17.4 (2.6)

Median (IQR)

16.7 (15.5 - 18.2)

16.7 (15.6 - 18.6)

Overweight (No, %)1

41 (11.8)

68 (15.5)

Obese (No, %)1

3 (0.9)

13 (3.0)

Waist circumference (cm)

60.5 (5.7)

64.7 (7.5)

Sum of 4 skinfolds (mm)

36.3 (17.1)

43.0 (24.6)

Socioeconomic status (No, (%)

  

   Low

135 (38.8)

157 (35.7)

   Middle

75 (21.6)

93 (21.1)

   High

138 (39.7)

190 (43.2)

Ethnic background (No, %)2

  

   Western origin

280 (84.3)

304 (76.8)

   Non-western origin

52 (15.7)

92 (23.2)

  1. Values are mean (SDs) unless otherwise stated.
  2. BMI, body mass index
  3. 1Defined on basis of BMI according to IOTF criteria
  4. 2Percentage is for number with complete data on this variable - 16 participants in 1999-2000 and 44 participants in 2005 had missing data on this variable