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Table 3 Baseline and 4-year follow-up post-intervention measurements of BMI categorized as OW and OB in the intervention and control groups

From: Follow-up of a healthy lifestyle education program (the EdAl study): four years after cessation of randomized controlled trial intervention

  Baseline, n (%) 4-year follow-up post-intervention, n (%) p-value Baseline to 4-year follow-up post-interventiona p-value Intervention vs. Controlb
WHO Criteriac
 OW
  Intervention Boys 39 (21.9) 31 (17.4) 0.322 0.314
Girls 38 (22.2) 12 (7.0) <0.001 0.602
Total 77 (22.1) 43 (12.3) <0.001 0.238
  Control Boys 8 (11.8) 6 (8.8) 0.774  
Girls 18 (20.9) 12 (14.0) 0.286  
Total 26 (16.9) 18 (11.7) 0.229  
 OB
  Intervention Boys 24 (13.5) 3 (1.7) <0.001 0.019
Girls 11 (6.4) 4 (2.3) 0.039 0.560
Total 35 (10.0) 7 (2.0) <0.001 0.205
  Control Boys 5 (7.4) 3 (4.4) 0.500  
Girls 6 (7.0) 2 (2.3) 0.289  
Total 11 (7.1) 5 (3.2) 0.109  
IOTF Criteriad
 OW
  Intervention Boys 39 (21.9) 30 (16.9) 0.163 0.238
Girls 30 (17.5) 11 (6.4) 0.002 0.581
Total 69 (19.8) 41 (11.7) 0.001 0.244
  Control Boys 6 (8.8) 3 (4.4) 0.375  
Girls 18 (20.9) 9 (10.5) 0.022  
Total 24 (15.6) 5 (3.2) 0.008  
 OB
  Intervention Boys 4 (2.2) 1 (0.6) 0.375 0.578
Girls 8 (4.7) 4 (2.3) 0.289 0.430
Total 12 (3.4) 5 (1.4) 0.092 0.186
  Control Boys 3 (4.4) 3 (4.4) 1.000  
Girls 1 (1.2) 2 (2.3) 1.000  
Total 4 (2.6) 5 (3.2) 1.000  
  1. BMI body mass index, IOTF International Obesity Task Force, OW overweight, OB obesity, WHO World Health Organization
  2. Bold text indicates significant values
  3. The 4-year follow-up post-intervention measurements were conducted over the 2014 academic year in Reus (intervention group) and in Cambrils, Salou and Vila-seca (control group)
  4. aFisher’s exact test
  5. bMcNemar’s test
  6. cThe WHO criteria cutoff points (2007) were used for the BMI classification
  7. dThe IOTF criteria cutoff points (Cole, 2000) were used for the BMI classification