Background
Methods
Study design
Dietary assessment
Data and statistical analysis
Results
n | % | |
---|---|---|
Sex | ||
Male | 582 | 48.0 |
Female | 631 | 52.0 |
Age group | ||
12-13 years | 416 | 34.3 |
14-15 years | 427 | 35.2 |
16-17 years | 370 | 30.5 |
Body weight (BMIa) | ||
Under-/normal weight (≤ P90) | 1005 | 82.9 |
Overweight (>P97) | 201 | 16.6 |
Missing | 7 | 0.6 |
Socio-economic statusb
| ||
Low | 249 | 20.5 |
Medium | 617 | 50.9 |
High | 331 | 27.3 |
Missing | 16 | 1.3 |
Correlations
Food group | all n = 1213 | Sex | Age group | |||
---|---|---|---|---|---|---|
Male n = 582 | Female n = 631 | 12-13 years n = 416 | 14-15 years n = 427 | 16-17 years n = 370 | ||
Margarine | 0.69 | 0.65 (.60-.69) | 0.73 (.69-.76) | 0.71 (.66-.75) | 0.67 (.61-.72) | 0.69 (.63-.74) |
Coffee | 0.68 | 0.66 (.61-.70) | 0.69 (.65-.73) |
0.57 (.50-.63)
| 0.66 (.60-.71) |
0.70 (.64-.75)
|
Hazelnut spread | 0.67 | 0.63 (.58-.68) | 0.71 (.67-.75) | 0.68 (.62-.73) | 0.68 (.63-.73) | 0.64 (.58-.70) |
Sweet spreads | 0.66 | 0.65 (.60-.69) | 0.67 (.62-.71) | 0.65 (.59-.70) | 0.64 (.58-.69) | 0.69 (.63-.74) |
Breakfast cereals | 0.66 | 0.67 (.62-.71) | 0.64 (.59-.68) |
0.58 (.51-.64)
| 0.66 (.60-.71) |
0.71 (.66-.76)
|
Milk | 0.66 | 0.66 (.61-.70) | 0.65 (.60-.69) | 0.64 (.58-.69) | 0.69 (.64-.74) | 0.65 (.59-.71) |
Mineral water | 0.66 | 0.68 (.63-.72) | 0.63 (.58-.67) | 0.61 (.55-.67) | 0.67 (.61-.72) | 0.68 (.62-.73) |
Soda | 0.65 | 0.68 (.63-.72) | 0.60 (.55-.65) | 0.63 (.57-.68) | 0.64 (.58-.69) | 0.68 (.62-.73) |
Butter | 0.63 | 0.63 (.58-.68) | 0.62 (.57-.67) | 0.58 (.51-.64) | 0.67 (.61-.72) | 0.63 (.56-.69) |
Fruits | 0.63 | 0.62 (.57-.67) | 0.62 (.57-.67) | 0.60 (.53-.66) | 0.63 (.57-.68) | 0.66 (.60-.71) |
Fruit/herbal tea | 0.62 | 0.60 (.55-.65) | 0.63 (.58-.67) |
0.67 (.61-.72)
|
0.54 (.47-.60)
| 0.64 (.58-.70) |
Green/black tea | 0.62 | 0.58 (.52-.63) | 0.65 (.60-.69) |
0.56 (.49-.62)
|
0.71 (.66-.75)
|
0.57 (.50-.64)
|
Cheese | 0.61 | 0.60 (.55-.65) | 0.62 (.57-.67) | 0.60 (.53-.66) | 0.60 (.54-.66) | 0.62 (.55-.68) |
Fish | 0.60 | 0.57 (.51-.62) | 0.63 (.58-.67) |
0.56 (.49-.62)
|
0.55 (.48-.61)
|
0.70 (.64-.75)
|
Ice cream | 0.59 | 0.56 (.50-.61) | 0.62 (.57-.67) | 0.61 (.55-.67) | 0.59 (.52-.65) | 0.57 (.50-.64) |
Eggs | 0.58 | 0.54 (.48-.60) | 0.60 (.55-.65) | 0.61 (.55-.67) | 0.56 (.49-.62) | 0.57 (.50-.64) |
Cream cheese | 0.58 | 0.52 (.46-.58) | 0.62 (.57-.67) | 0.62 (.56-.68) | 0.54 (.47-.60) | 0.57 (.50-.64) |
Salty snacks | 0.57 | 0.58 (.52-.63) | 0.55 (.49-.60) | 0.60 (.53-.66) | 0.56 (.49-.62) | 0.55 (.47-.62) |
Ketchup/mayonnaise | 0.56 | 0.57 (.51-.62) | 0.54 (.48-.59) | 0.58 (.51-.64) | 0.51 (.44-.58) | 0.61 (.54-.67) |
Curd1
| 0.56 | 0.54 (.48-.60) | 0.57 (.51-.62) | 0.52 (.45-.59) | 0.58 (.51-.64) | 0.58 (.51-.64) |
Meat products | 0.55 | 0.49 (.43-.55) | 0.58 (.53-.63) | 0.50 (.42-.57) | 0.55 (.48-.61) | 0.60 (.53-.66) |
Potatoes | 0.54 | 0.52 (.46-.58) | 0.55 (.49-.60) | 0.48 (.40-.55) | 0.60 (.54-.66) | 0.57 (.50-.64) |
Juice | 0.54 | 0.53 (.47-.59) | 0.55 (.49-.60) | 0.58 (.51-.64) | 0.48 (.40-.55) | 0.57 (.50-.64) |
Fast food2
| 0.53 | 0.50 (.44-.56) | 0.47 (.41-.53) | 0.49 (.41-.56) |
0.45 (.37-.52)
|
0.62 (.55-.68)
|
Soup | 0.52 | 0.51 (.45-.57) | 0.53 (.47-.58) | 0.50 (.42-.57) | 0.54 (.47-.60) | 0.51 (.43-.58) |
Sweets3
| 0.52 | 0.51 (.45-.57) | 0.51 (.45-.57) | 0.50 (.42-.57) | 0.49 (.41-.56) | 0.55 (.47-.62) |
Pudding/rice pudding | 0.50 | 0.50 (.44-.56) | 0.49 (.43-.55) | 0.46 (.38-.53) | 0.51 (.44-.58) | 0.53 (.45-.60) |
Potato products | 0.49 | 0.47 (.40-.53) | 0.50 (.44-.56) | 0.50 (.42-.57) | 0.42 (.34-.50) | 0.55 (.47-.62) |
Pancakes | 0.49 | 0.47 (.40-.53) | 0.51 (.45-.57) | 0.49 (.41-.56) | 0.43 (.35-.50) | 0.55 (.47-.62) |
Meat | 0.47 | 0.41 (.34-.48) | 0.47 (.41-.53) | 0.44 (.36-.51) | 0.45 (.37-.52) | 0.52 (.44-.59) |
Vegetables | 0.44 |
0.58 (.52-.63)
|
0.40 (.33-.46)
| 0.47 (.39-.54) | 0.41 (.33-.49) | 0.45 (.36-.53) |
Cakes/pastries | 0.44 | 0.44 (.37-.50) | 0.43 (.36-.49) | 0.39 (.31-.47) | 0.47 (.39-.54) | 0.46 (.38-.54) |
Tap water | 0.43 | 0.44 (.37-.50) | 0.41 (.34-.47) | 0.41 (.33-.49) | 0.43 (.35-.50) | 0.43 (.34-.51) |
Cookies | 0.41 | 0.44 (.37-.50) | 0.40 (.33-.46) | 0.43 (.35-.51) | 0.44 (.36-.51) | 0.36 (.27-.45) |
Poultry | 0.39 |
0.30 (.22-.37)
|
0.46 (.40-.52)
| 0.39 (.31-.47) | 0.37 (.29-.45) | 0.43 (.34-.51) |
Nuts | 0.38 | 0.37 (.30-.44) | 0.38 (.31-.44) | 0.46 (.38-.53) | 0.40 (.32-.48) | 0.38 (.29-.46) |
Brown bread4
| 0.35 | 0.36 (.29-.43) | 0.34 (.27-.41) | 0.32 (.23-.40) | 0.32 (.23-.40) | 0.43 (.34-.51) |
White bread5
| 0.31 | 0.23 (.15-.31) | 0.33 (.26-.40) | 0.27 (.18-.36) | 0.31 (.22-.39) | 0.62 (.55-.68) |
Sport/energy drinks | 0.31 |
0.38 (.31-.45)
|
0.18 (.10-.25)
|
0.32 (.23-.40)
|
0.31 (.22-.39)
|
0.29 (.19-.38)
|
Pasta/rice | 0.22 | 0.19 (.11-.27) | 0.26 (.19-.33) | 0.17 (.08-.26) | 0.25 (.16-.34) | 0.25 (.15-.34) |
Mean | 0.53 | 0.52 | 0.53 | 0.52 | 0.52 | 0.56 |
Subgroups
Food group | Body weighta
| Socio-economic statusb
| |||
---|---|---|---|---|---|
normal weight n = 1005 | overweight n = 201 | low n = 249 | medium n = 617 | high n = 331 | |
Milk | 0.67 (.63-.70) | 0.65 (.56-.72) |
0.58 (.49-.66)
| 0.66 (.61-.70) |
0.74 (.69-.79)
|
Soda | 0.67 (.63-.70) | 0.54 (.43-.63) | 0.62 (.54-.69) | 0.63 (.58-.68) | 0.67 (.61-.73) |
Sport/energy drinks | 0.33 (.27-.38) | 0.17 (.03-.30) | 0.19 (.07-.31) | 0.32 (.25-.39) | 0.38 (.28-.47) |
Juice | 0.56 (.52-.60) | 0.46 (.34-.56) | 0.44 (.33-.54) | 0.56 (.50-.61) | 0.58 (.50-.65) |
Tap water | 0.44 (.39-.49) | 0.35 (.22-.47) | 0.34 (.23-.45) | 0.41 (.34-.47) | 0.49 (.40-.57) |
Mineral water | 0.67 (.63-.70) | 0.56 (.46-.65) | 0.67 (.60-.73) | 0.67 (.62-.71) | 0.62 (.55-.68) |
Fruit/herbal tea |
0.64 (.60-.68)
|
0.47 (.35-.57)
|
0.47 (.37-.56)
|
0.62 (.57-.67)
|
0.71 (.65-.76)
|
Green/black tea | 0.61 (.57-.65) | 0.64 (.55-.72) | 0.69 (.62-.75) | 0.57 (.51-.62) | 0.61 (.54-.67) |
Coffee | 0.68 (.65-.71) | 0.67 (.59-.74) | 0.64 (.56-.71) | 0.65 (.60-.69) | 0.75 (.70-.79) |
Breakfast cereals | 0.66 (.62-.69) | 0.66 (.57-.73) |
0.50 (.40-.59)
|
0.69 (.65-.73)
|
0.73 (.68-.78)
|
Brown bread1
| 0.36 (.30-.41) | 0.30 (.17-.42) | 0.29 (.17-.40) | 0.35 (.28-.42) | 0.39 (.29-.48) |
White bread2
| 0.31 (.25-.36) | 0.33 (.20-.45) | 0.33 (.21-.44) | 0.28 (.21-.35) | 0.35 (.25-.44) |
Butter |
0.64 (.60-.68)
|
0.49 (.38-.59)
| 0.42 (.31-.52) | 0.65 (.60-.69) | 0.70 (.64-.75) |
Margarine | 0.69 (.66-.72) | 0.67 (.59-.74) | 0.65 (.57-.72) | 0.68 (.64-.72) | 0.73 (.68-.78) |
Cheese | 0.63 (.59-.67) | 0.51 (.40-.61) | 0.49 (.39-.58) | 0.64 (.59-.68) | 0.63 (.56-.69) |
Curd3
| 0.56 (.52-.60) | 0.53 (.42-.62) | 0.46 (.36-.55) | 0.58 (.53-.63) | 0.59 (.51-.66) |
Cream cheese |
0.61 (.57-.65)
|
0.43 (.31-.54)
| 0.59 (.50-.67) | 0.55 (.49-.60) | 0.65 (.58-.71) |
Eggs | 0.59 (.55-.63) | 0.57 (.47-.66) | 0.58 (.49-.66) | 0.58 (.53-.63) | 0.59 (.51-.66) |
Soup | 0.50 (.45-.54) | 0.61 (.52-.69) | 0.48 (.38-.57) | 0.49 (.43-.55) | 0.60 (.53-.66) |
Meat | 0.46 (.41-.51) | 0.50 (.39-.60) | 0.41 (.30-.51) | 0.45 (.38-.51) | 0.55 (.47-.62) |
Poultry | 0.41 (.36-.46) | 0.33 (.20-.45) | 0.36 (.25-.46) | 0.40 (.33-.46) | 0.43 (.34-.51) |
Meat products |
0.58 (.54-.62)
|
0.42 (.30-.53)
|
0.46 (.36-.55)
| 0.55 (.49-.60) |
0.63 (.56-.69)
|
Fish | 0.60 (.56-64) | 0.62 (.53-.70) | 0.56 (.47-.64) | 0.57 (.51-.62) | 0.67 (.61-.73) |
Fruits | 0.64 (.60-.68) | 0.58 (.48-.67) | 0.55 (.46-.63) | 0.67 (.62-.71) | 0.60 (.53-.66) |
Vegetables | 0.45 (.40-.50) | 0.40 (.28-.51) | 0.40 (.29-.50) | 0.45 (.38-.51) | 0.51 (.43-.59) |
Pasta/rice | 0.21 (.15-.27) | 0.29 (.16-.41) | 0.14 (.02-.26) | 0.21 (.13-.28) | 0.29 (.19-.39) |
Potatoes | 0.56 (.52-.60) | 0.43 (.31-.54) |
0.42 (.31-.52)
| 0.54 (.48-.59) |
0.60 (.53-.66)
|
Potato products | 0.48 (.43-.53) | 0.50 (.39-.60) | 0.42 (.31-.52) | 0.49 (.43-.55) | 0.52 (.44-.59) |
Fast food4
| 0.53 (.48-.57) | 0.51 (.40-.61) |
0.42 (.31-.52)
| 0.51 (.45-.57) |
0.60 (.53-.66)
|
Ketchup/mayonnaise | 0.55 (.51-.59) | 0.62 (.53-.70) |
0.39 (.28-.49)
| 0.58 (.53-.63) |
0.63 (.56-.69)
|
Cakes/pastries |
0.47 (.42-.52)
|
0.28 (.15-.40)
|
0.36 (.25-.46)
| 0.43 (.36-.49) |
0.56 (.48-.63)
|
Cookies | 0.41 (.36-.46) | 0.43 (.31-.54) | 0.39 (.28-.49) | 0.43 (.36-.49) | 0.39 (.29-.48) |
Sweets5
|
0.54 (.49-.58)
|
0.36 (.23-.47)
| 0.48 (.38-.57) | 0.54 (.48-.59) | 0.49 (.40-.57) |
Ice cream | 0.61 (.57-.65) | 0.50 (.39-.60) | 0.53 (.43-.61) | 0.61 (.56-.66) | 0.59 (.51-.66) |
Pudding/rice pudding | 0.50 (.45-.54) | 0.47 (.35-.57) | 0.38 (.27-.48) | 0.53 (.47-.58) | 0.55 (.47-.62) |
Pancakes | 0.50 (.45-.54) | 0.43 (.31-.54) | 0.42 (.31-.52) | 0.48 (.42-.54) | 0.58 (.50-.65) |
Sweet spreads | 0.65 (.61-.68) | 0.66 (.57-.73) | 0.63 (.55-.70) | 0.63 (.58-.68) | 0.71 (.65-.76) |
Hazelnut spread |
0.68 (.65-.71)
|
0.50 (.39-.60)
| 0.58 (.49-.66) | 0.69 (.65-.73) | 0.71 (.65-.76) |
Salty snacks | 0.57 (.53-.61) | 0.56 (.46-.65) | 0.50 (.40-.59) | 0.56 (.50-.61) | 0.63 (.56-.69) |
Nuts | 0.36 (.30-.41) | 0.46 (.34-.56) | 0.31 (.19-.42) | 0.37 (.30-.44) | 0.45 (.36-.53) |
Mean | 0.54 | 0.49 | 0.46 | 0.53 | 0.58 |
Food group | n | FFQ | Mean difference* | Mean difference%** | P2.5-P97.5 of mean difference | |
---|---|---|---|---|---|---|
Mean | SD | |||||
Milk | 1205 | 230.2 | 355.8 | 3.1 | 1.4 | -406.1-738.5 |
Soda | 1205 | 383.9 | 698.6 | -44.8 | -11.0 | -1518.8-1608.4 |
Sport/energy drinks | 1201 | 26.0 | 110.7 | 11.5 | 56.8 | -85.5-200 |
Juice | 1200 | 306.3 | 526.9 | -172.6 | -44.0 | -1456.8-964.1 |
Tap water | 1204 | 246.3 | 622.4 | 142.3 | 81.2 | -599.1-2090 |
Mineral water | 1206 | 636.2 | 922.0 | -60.3 | -9.0 | -1845-2248.8 |
Fruit/herbal tea | 1203 | 75.1 | 206.1 | -23.7 | -27.2 | -522.9-277.9 |
Green/black tea | 1207 | 33.4 | 182.2 | 8.1 | 27.6 | -116.8-150 |
Coffee | 1208 | 24.3 | 87.7 | -6.4 | -23.2 | -159.5-113 |
Breakfast cereals | 1207 | 21.5 | 33.8 | -3.7 | -15.8 | -89.8-66.6 |
Brown bread1
| 1206 | 64.0 | 95.1 | 9.5 | 16.0 | -190-250 |
White bread2
| 1210 | 66.6 | 86.8 | -30.1 | -36.9 | -197.3-187.2 |
Butter | 1193 | 5.2 | 9.4 | -4.7 | -62.3 | -43.1-18.4 |
Margarine | 1206 | 4.0 | 8.3 | -5.6 | -82.4 | -45.3-10 |
Cheese | 1203 | 24.9 | 40.2 | 5.9 | 26.9 | -49.2-111 |
Curd3
| 1206 | 73.5 | 103.9 | 14.2 | 21.4 | -137.2-200 |
Cream cheese | 1200 | 6.5 | 19.2 | 1.4 | 24.3 | -18.6-30 |
Eggs | 1200 | 13.2 | 22.5 | 0.3 | 2.3 | -32.8-40 |
Soup | 1209 | 75.4 | 118.6 | 8.0 | 11.2 | -181.4-185.7 |
Meat | 1202 | 43.2 | 60.6 | 3.3 | 8.0 | -86.4-113.6 |
Poultry | 1199 | 24.1 | 33.1 | 8.9 | 45.3 | -38-81.3 |
Meat products | 1200 | 20.4 | 24.5 | -26.3 | -78.3 | -119.3-30.6 |
Fish | 1210 | 10.8 | 17.9 | -0.3 | -2.7 | -34.4-30.9 |
Fruits | 1207 | 214.7 | 304.1 | 12.9 | 6.2 | -392.9-650.5 |
Vegetables | 1192 | 137.3 | 158.2 | -36.8 | -23.6 | -370.2-263.6 |
Pasta/rice | 1208 | 52.4 | 61.2 | 35.0 | 100.3 | -36.8-183.3 |
Potatoes | 1207 | 79.6 | 79.0 | 18.0 | 25.5 | -102.7-196.9 |
Potato products | 1209 | 21.4 | 45.5 | 0.4 | 1.9 | -62.1-64.3 |
Fast food4
| 1209 | 22.7 | 72.2 | -11.3 | -39.8 | -110.4-41.8 |
Ketchup/mayonnaise | 1205 | 4.2 | 9.9 | -1.5 | -30.0 | -25.5-14.2 |
Cakes/pastries | 1208 | 25.1 | 36.2 | 6.1 | 27.7 | -52.9-97.5 |
Cookies | 1203 | 5.8 | 10.5 | -1.1 | -17.5 | -36.7-23.5 |
Sweets5
| 1201 | 28.8 | 53.5 | -10.0 | -29.6 | -97.8-70.3 |
Ice cream | 1205 | 34.2 | 100.2 | 22.0 | 95.0 | -20.5-150 |
Pudding/rice pudding | 1212 | 17.1 | 37.1 | -6.6 | -32.4 | -94.9-52.4 |
Pancakes | 1211 | 12.7 | 55.0 | 3.7 | 34.1 | -30.1-35.7 |
Sweet spreads | 1208 | 5.1 | 8.9 | -3.0 | -45.8 | -33.1-14.1 |
Hazelnut spread | 1205 | 6.0 | 12.4 | -3.3 | -43.1 | -40-13.7 |
Salty snacks | 1211 | 10.0 | 30.8 | 2.4 | 27.3 | -24.4-36.8 |
Nuts | 1210 | 1.3 | 5.3 | -1.2 | -64.9 | -18.9-5.4 |
Ranking classification
Food group | Same (%) | Adjacent (%) | Opposite (%) | Weighted kappa |
---|---|---|---|---|
Quartile | ||||
Mineral water | 51,1 | 37,5 | 1,9 | 0,494 |
Milk | 49,5 | 38,6 | 2,0 | 0,472 |
Soda | 48,1 | 40,1 | 1,9 | 0,471 |
Fruits | 47,2 | 40,4 | 2,5 | 0,455 |
Cheese | 46,8 | 37,4 | 2,7 | 0,445 |
Salty snacks | 44,3 | 38,0 | 3,5 | 0,396 |
Curd1
| 42,9 | 42,3 | 2,1 | 0,393 |
Ketchup/mayonnaise | 43,4 | 41,5 | 2,7 | 0,391 |
Potatoes | 45,3 | 37,4 | 3,4 | 0,389 |
Meat products | 42,4 | 40,2 | 2,8 | 0,385 |
Fast food2
| 43,8 | 41,9 | 2,4 | 0,374 |
Soup | 42,0 | 38,1 | 3,4 | 0,367 |
Potato products | 40,9 | 39,1 | 3,5 | 0,351 |
Sweets3
| 41,2 | 39,1 | 2,2 | 0,350 |
Cakes/pastries | 41,1 | 38,2 | 4,0 | 0,320 |
Cookies | 40,1 | 37,7 | 6,1 | 0,301 |
Vegetables | 38,9 | 39,3 | 4,5 | 0,300 |
Meat | 39,5 | 36,5 | 5,9 | 0,299 |
Poultry | 37,9 | 36,8 | 7,3 | 0,273 |
Juice | 44,7 | 38,3 | 4,3 | 0,202 |
White bread4
| 33,1 | 40,2 | 6,4 | 0,192 |
Adapted groups* | ||||
Coffee | 75,2 | 15,6 | 3,1 | 0,589 |
Margarine | 55,1 | 35,0 | 2,3 | 0,543 |
Black/green tea | 77,4 | 13,2 | 2,7 | 0,499 |
Hazelnut spread | 50,8 | 35,6 | 2,6 | 0,497 |
Sweet spreads | 49,0 | 38,4 | 3,1 | 0,482 |
Breakfast cereals | 47,9 | 40,7 | 2,0 | 0,479 |
Butter | 49,7 | 37,0 | 4,2 | 0,477 |
Fruit/herbal tea | 51,0 | 32,6 | 4,9 | 0,454 |
Fish | 48,3 | 36,2 | 3,4 | 0,451 |
Ice cream | 44,1 | 40,0 | 3,5 | 0,419 |
Eggs | 44,8 | 41,5 | 2,3 | 0,410 |
Cream cheese | 50,4 | 29,2 | 5,8 | 0,399 |
Pudding/rice pudding | 45,8 | 33,9 | 5,4 | 0,379 |
Pancakes | 46,7 | 31,4 | 8,2 | 0,371 |
Nuts | 54,2 | 21,8 | 9,3 | 0,295 |
Tap water | 53,6 | 22,7 | 9,7 | 0,293 |
Brown bread5
| 37,6 | 37,1 | 8,4 | 0,250 |
Sport/energy drinks | 66,1 | 13,5 | 8,8 | 0,202 |
Pasta/rice | 31,1 | 39,0 | 9,6 | 0,151 |