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Table 1 Description of the sample at all timepoints by intervention and control

From: Tracking of fruit, vegetables and unhealthy snacks consumption from childhood to adulthood (15 year period): does exposure to a free school fruit programme modify the observed tracking?

  Baseline (2001)   Follow-up 1 (2002)   Follow-up 2 (2003)*  
Intervention Control Intervention Control Intervention Control
  p-value   p-value   p-value
N 585 1365   532 1262   293 625  
Gender (% female) 49 50 0.488 49 50 0.517 46 51 0.102
Parental education (% high) 48 39 < 0.001 48 39 0.001 46 40 0.115
  Mean ± SD Mean SD   Mean ± SD Mean ± SD   Mean ± SD Mean ± SD  
Fruit (portions/day) 1.3 ± 1.5 1.5 ± 1.9 0.009 1.7 ± 1.6 1.2 ± 1.5 < 0.001 1.4 ± 1.4 1.2 ± 1.4 0.005
Fruit (times/week) 7.3 ± 4.4 7.6 ± 4.4 0.298 7.7 ± 4.1 7.2 ± 4.4 0.051 7.6 ± 4.2 7.4 ± 4.2 0.700
Vegetable (portions/day) 0.8 ± 1.1 0.9 ± 1.3 0.287 0.6 ± 1.0 0.6 ± 1.0 0.451 0.6 ± .09 0.6 ± 0.9 0.860
Vegetable (times/week) 6.5 ± 3.9 6.6 ± 3.8 0.763 7.1 ± 3.8 6.3 ± 3.9 < 0.001 6.6 ± 3.5 6.4 ± 3.6 0.280
Unhealthy Snacks (times/week) 6.5 ± 4.1 7.2 ± 7.7 0.001 6.3 ± 4.4 7.4 ± 5.1 < 0.001 6.0 ± 3.9 7.1 ± 5.0 < 0.001
  Follow-up 3 (2005)   Follow-up 4 (2009)   Follow-up 5 (2016)  
Intervention Control Intervention Control Intervention control
  p-value   p-value   p-value
N 500 1101   112 208   297 685  
Gender (% female) 48 52 0.200 59 64 0.355 54 55 0.917
Parental education (% high) 48 40 0.004 53 46 0.229 54 48 0.141
  Mean ± SD Mean ± SD   Mean ± SD Mean ± SD   Mean ± SD Mean ± SD  
Fruit (portions/day) 1.2 ± 1.4 1.2 ± 1.6 0.820 1.2 ± 1.4 1.0 ± 1.3 0.245 1.3 ± 1.3 1.2 ± 1.3 0.858
Fruit (times/week) 7.5 ± 4.3 7.0 ± 4.5 0.020 6.4 ± 4.3 6.0 ± 4.2 0.417 6.3 ± 3.6 6.3 ± 3.5 0.903
Vegetable (portions/day) 1.0 ± 1.3 0.9 ± 1.4 0.293 1.0 ± 1.1 1.0 ± 1.08 0.763 1.6 ± 1.4 1.5 ± 1.4 0.600
Vegetable (times/week) 6.9 ± 3.9 6.3 ± 3.7 < 0.001 6.6 ± 3.8 6.5 ± 3.9 0.825 7.8 ± 3.3 8.1 ± 3.4 0.301
Unhealthy snacks (times/week) 6.5 ± 5.2 7.2 ± 5.1 0.013 4.7 ± 3.4 5.4 ± 4.8 0.143 3.7 ± 2.6 4.1 ± 2.9 0.050
  1. T-test for continuous variables. Chi square for categorical variables. *Follow-up 2 included only initially 6th graders (not 7th graders as they in May 2003 were in secondary elementary schools