Table 3. Comparison of mean intake of B vitamins among BMI categories in Iranian children and adolescents .
| B Vitamins intake | Emaciated(n = 90) |
Thin
(n = 275) |
Normal weight
(n = 3591) |
Overweight
(n = 894) |
Obese(n = 525) | P value a | |
| B1 (mg/d) | Total | 2.05 ( 1.05) | 2.04 ( 1.11) | 2.23 ( 1.27) | 2.38 ( 1.44) | 2.28 ( 1.27) | <0.001 |
| Boys | 1.99 ( 0.94) | 2.07 ( 1.14) | 2.27 ( 1.36) | 2.51 ( 1.66) | 2.26 ( 1.04) | 0.003 | |
| Girls | 2.12 ( 1.20) | 2.01 ( 1.08) | 2.19 ( 1.17) | 2.25 ( 1.18) | 2.31 ( 1.53) | 0.159 | |
| B2 (mg/d) | Total | 2.45 ( 1.27) | 2.50 ( 1.45) | 2.69 ( 1.57) | 2.86 ( 1.72) | 2.73 ( 1.49) | 0.007 |
| Boys | 2.36 ( 1.23) | 2.51 ( 1.45) | 2.68 ( 1.57) | 3.02 ( 1.86) | 2.67 ( 1.39) | 0.002 | |
| Girls | 2.57 ( 1.32) | 2.48 ( 1.46) | 2.70 ( 1.56) | 2.71 ( 1.55) | 2.79 ( 1.63) | 0.437 | |
| B3 (mg/d) | Total | 21.27 ( 9.80) | 21.17 ( 10.83) | 23.04 ( 12.16) | 23.90 ( 13.59) | 23.75 ( 12.29) | 0.020 |
| Boys | 21.36 ( 9.31) | 20.71 ( 9.99) | 23.04 ( 12.35) | 24.28 ( 13.99) | 23.93 ( 11.36) | 0.044 | |
| Girls | 21.45 ( 10.55) | 21.69 ( 11.75) | 23.04 ( 11.94) | 23.52 ( 13.18) | 23.52 ( 12.42) | 0.478 | |
| B5 (mg/d) | Total | 5.72 ( 2.38) | 5.65 ( 2.47) | 5.65 ( 2.33) | 5.69 ( 2.38) | 5.91 ( 2.30) | 0.151 |
| Boys | 5.60 ( 2.39) | 5.72 ( 2.40) | 5.63 ( 2.45) | 5.65 ( 2.44) | 5.99 ( 2.35) | 0.176 | |
| Girls | 5.89 ( 2.39) | 5.56 ( 2.55) | 5.68 ( 2.31) | 5.72 ( 2.31) | 5.82 ( 2.25) | 0.679 | |
| B6 (mg/d) | Total | 2.18 ( 1.35) | 2.21 ( 1.28) | 2.36 ( 1.44) | 2.35 ( 1.63) | 2.39 ( 1.34) | 0.008 |
| Boys | 2.12 ( 1.22) | 2.22 ( 1.36) | 2.34 ( 1.46) | 2.62 ( 1.78) | 2.32 ( 1.22) | 0.015 | |
| Girls | 2.26 ( 1.52) | 2.20 ( 1.18) | 2.37 ( 1.42) | 2.44 ( 1.47) | 2.47 ( 1.49) | 0.462 | |
| B8 (mcg/d) | Total | 32.43 ( 16.66) | 32.73 ( 17.09) | 34.15 ( 17.49) | 35.48 ( 17.90) | 34.54±16.69 | 0.085 |
| Boys | 31.12 ( 16.69) | 32.87 ( 16.78) | 34.29 ( 17.94) | 36.19 ( 18.67) | 34.21 ( 16.48) | 0.082 | |
| Girls | 34.24 ( 16.67) | 32.58 ( 17.52) | 33.99 ( 16.96) | 34.77 ( 17.09) | 34.97 ( 17.01) | 0.691 | |
| B9 (mcg/d) | Total | 580.13 ( 274.56) | 569.25 ( 295.45) | 587.44 ( 278.31) | 596.99 ( 302.55) | 600.30 ( 268.39) | 0.160 |
| Boys | 564.43 ( 251.60) | 562.52 ( 274.89) | 588.95 ( 283.49) | 598.46 ( 303.23) | 621.44 ( 255.97) | 0.060 | |
| Girls | 601.62 ( 305.37) | 577.09 ( 318.66) | 585.73 ( 272.40) | 595.54 ( 282.24) | 572.11 ( 282.24) | 0.577 | |
| B12 (mcg/d) | Total | 5.49 ( 3.16) | 6.09 ( 5.06) | 6.43 ( 4.98) | 6.88 ( 5.33) | 6.46 ( 4.68) | 0.007 |
| Boys | 5.35 ( 3.05) | 6.42 ( 5.30) | 6.51 ( 5.32) | 7.34 ( 5.95) | 6.25 ( 3.76) | 0.007 | |
| Girls | 5.68 ( 3.33) | 5.71 ( 4.75) | 6.34 ( 4.56) | 6.42 ( 4.60) | 6.75 ( 5.68) | 0.117 | |
Note: Values are mean (SD).
aComparison of the mean intakes of B vitamins among BMI categories using Kruskal-Wallis test.