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Table 1 Baseline characteristics of the study population (DNFCS 2007–2010)

From: The association of dairy intake of children and adolescents with different food and nutrient intakes in the Netherlands

Age 7–13 years 14–18 years
  Non-dairy consumers Tertile 3 mean P for trend Non-dairy consumers Tertile 3 mean P for trend
N 17 330 1007   21 228 706  
Males (N/%) 9 (52.9 %) 184 (55.7 %) 504 (50.1 %)   13 (61.9 %) 141 (61.8 %) 352 (49.9 %)  
Height (cm) M/F 139.9(8.7)/141.5(16.5) 147.8(14.4)/147.0(14.0) 146.1(14.1)/146.3(13.8) 0.09 173.9(8.1)/168.8(5.0) 180.1(8.5)/170.6(6.6) 178.9(9.1)/169.1(6.5) <0.0001
Weight (kg) M/F 31.3(8.0)/36.1(10.6) 38.7(12.0)/39.6(11.7) 38.0(11.9)/39.2(12.3) 0.47 64.9(10.9)/74.3(20.7) 67.7(10.9)/61.0(9.1) 67.4(12.5)/60.9(10.8) 0.02
BMI (kg/m2) M/F 15.9(2.8)/17.8(3.6) 17.3(2.8)/18.0(2.8) 17.4(2.8)/17.9(3.1) 0.57 21.5(3.7)/26.0(6.6) 20.9(3.0)/20.9(2.8) 21.0(3.1)/21.3(3.4) 0.37
EI/BMR 1.58(0.20) 1.79(0.24) 1.69 (0.23) <0.0001 1.13 (0.26) 1.57(0.27) 1.46(0.27) <0.0001
BMI category     0.75     0.45
Seriously underweight 3 (17.6 %) 5 (1.5 %) 28 (2.8)   0 (0.0 %) 3 (1.3 %) 10(1.4 %)  
Underweight 3 (17.6 %) 19 (5.8 %) 70(7.0 %)   1 (4.8 %) 12 (5.3 %) 48(6.8 %)  
Normal weight 8 (47.1 %) 246 (74.5 %) 715(71.2 %)   12 (57.1 %) 183 (80.3 %) 533(75.5 %)  
Overweight 3 (17.6 %) 52 (15.8 %) 160(15.9 %)   6 (28.6 %) 25 (11.0 %) 95(13.5 %)  
Obese 0 (0.0 %) 8 (2.4 %) 33(3.3 %)   2 (9.5 %) 5 (2.2 %) 20(2.8 %)  
Size of household     0.17     0.68
1 0 (0.0 %) 0 (0.0 %) 0(0.0 %)   1 (4.8 %) 4 (1.8 %) 11(1.6 %)  
2 and 3 1 (5.9 %) 76 (23.0 %) 244(24.8 %)   5 (23.8 %) 50 (21.9 %) 169(24.3 %)  
4 12 (70.6 %) 146 (44.2 %) 446(45.4 %)   11 (52.4 %) 102 (44.7 %) 325(46.8 %)  
5+ 4 (23.5 %) 108 (32.7 %) 292(29.7 %)   4 (19.0 %) 72 (31.6 %) 190(27.3 %)  
Education levela     0.22     0.29
Low 3 (17.6 %) 48 (17.4 %) 127(12.6 %)   3 (14.3 %) 102 (44.7 %) 297(42.1 %)  
Moderate 0 (0.0 %) 13 (4.7 %) 52(5.2 %)   1 (7.1 %) 18 (7.9 %) 54(7.7 %)  
High 1 (5.9 %) 29 (10.5 %) 97(9.6 %)   1 (7.1 %) 8 (3.5 %) 18(2.5 %)  
Student/schoolgoing 4 (23.5 %) 88(31.8 %) 271(26.9 %)   19 (90.5 %) 213 (93.4 %) 644(91.2 %)  
Native countryb 17(100 %) 324(98.2 %) 989(98.2 %) 0.023 21 (100 %) 223 (97.8 %) 688(97.5 %) 0.94
Physical activitity false (N/%)c 3 (17.6 %) 69 (24.9 %) 205(20.4 %) 0.43 15 (71.4 %) 144 (63.2 %) 497(70.4 %) 0.01
Smoking habits (yes/former/never) 0//0/4 0/1/89 0/2/275 0.37 3/0/18 16/8/204 66/28/612 0.04
Alcohol consumption yes(N/%) 0 (0.0 %) 1 (0.4 %) 9 (3.3 %) 0.24 6 (0.8 %) 112 (49.1 %) 335(47.5 %) 0.20
  1. aEducation level of parents was divided into low (intermediate general education); moderate (higher vocational education) and high (university)
  2. bNative country: percentage of people from Dutch origin
  3. cPhysical Activity: indication whether the participant meets the physical activity guideline (false/true)
  4. Education level, Physical Activity, Smoking habits and alcohol consumption: 730 missings