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Table 1 Demographic data of participants of the 1995 NNS and 2007 ANCNPAS

From: Food and beverage portion sizes in Australian children: a secondary analysis of 1995 and 2007 national data

  2-4 years 5-8 years 9-12 years 13-16 years
  1995 2007 1995 2007 1995 2007 1995 2007
n = 581 1491 624 954 544 966 449 1388
Mean age (y) [SD] 2.97c [0.81] 2.83c [0.74] 6.42b [1.12] 6.60b [1.12] 10.47 [1.14] 10.53 [1.10] 14.47 [1.12] 14.55 [1.01]
Sex (%)         
Male 49 52 55 51 53 47 52 50
Female 51 48 45 49 47 53 48 50
Weight status (%)         
Underweight 8.1 4.4 4.5 3.7 2.9 5.6 4.5 4.1
Normal 70.7 74.6 63.9 76.2 65.8 67.0 67.5 70.4
Overweight 13.1 15.4 23.6 13.6 23.7 19.4 20.5 17.8
Obese 5.0 3.4 7.7 6.2 7.4 7.2 6.0 6.4
Unknown 3.1 2.1b* 0.3 0.3c* 0.2 0.8a* 1.6 0.4
Intake (%)         
Usual 65.7 97.9 63 97.1 61.4 72.5 56.6 72.3
Unusual 32.7 2.1c* 36.4 2.9c* 38.2 27.5c* 43.2 27.7c*
  1. ap value <0.05.
  2. bp value <0.01.
  3. cp value <0.001.
  4. *The distribution of the specified categorical variables significantly differs between 1995 and 2007.
  5. When decimal age could not be determined it was assumed age was midway through the year [43, 44].