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Table 2 Dietary intakes of study participants by quartiles of DPI

From: The association between dietary phytochemical index with depression and quality of life in iranian adolescent girls

Variables Q1
(N = 183)
Q2
(N = 183)
Q3
(N = 184)
Q4
(N = 183)
P trend **
Energy (kcal)* 2751.25 ± 835.61 2619.72 ± 742.90 2793.33 ± 833.42 2868.57 ± 900.95 0.932
Carbohydrate (gr/1000Kcal) 134.62 ± 21.85b 135.13 ± 16.88b 135.69 ± 16.73b 142.83 ± 15.82a < 0.001
Protein (gr/1000Kcal) 32.74 ± 6.21b 33.79 ± 5.08b 34.32 ± 4.56 35.56 ± 5.91a < 0.001
Fat (gr/1000Kcal) 39.09 ± 10.66b 38.15 ± 7.93b 36.15 ± 7.58b 34.98 ± 7.05a < 0.001
Cholesterol (mg/100Kcal) 86.20 ± 55.66 92.35 ± 39.24 91.64 ± 38.68 87.29 ± 46.17 0.865
Saturated fatty acid (gr/1000Kcal) 11.51 ± 3.82b 11.74 ± 3.47 b 11.28 ± 3.06 10.38 ± 2.85a < 0.001
MUFA (gr/1000Kcal) 13.08 ± 4.36b 12.13 ± 3.15 12.06 ± 3.08 11.23 ± 2.82a < 0.001
PUFA (gr/1000Kcal) 8.98 ± 3.97b 8.20 ± 2.78 8.42 ± 2.73 7.91 ± 2.92 a 0.004
Calcium (mg/1000Kcal) 414.77 ± 150.29 438.53 ± 134.59 439.96 ± 129.99 412.06 ± 120.88 0.880
Iron (mg/1000Kcal) 7.29 ± 1.70b 7.12 ± 1.34b 7.17 ± 1.21b 7.94 ± 1.43a < 0.001
Magnesium (mg/1000Kcal) 174.79 ± 45.60b 171.18 ± 35.40b 181.52 ± 33.56b 206.96 ± 34.39a < 0.001
Thiamine (mg/1000Kcal) 0.89 ± 0.21 0.84 ± 0.16 0.80 ± 0.15 0.85 ± 0.19 0.005
Riboflavin (mg/1000Kcal) 0.81 ± 0.33 0.83 ± 0.19 0.83 ± 0.19 0.81 ± 0.19 0.782
Niacin (mg/1000Kcal) 9.30 ± 2.24 9.05 ± 1.90 8.65 ± 1.82 9.18 ± 2.05 0.242
Vitamin B6 (mg/1000Kcal) 0.68 ± 0.13b 0.70 ± 0.11 0.71 ± 0.11 0.74 ± 0.14a < 0.001
Folate (µg/1000Kcal) 214.74 ± 45.11b 228.88 ± 44.22 229.98 ± 44.52 239.69 ± 58.66a < 0.001
Vitamin B12 (µg/1000Kcal) 1.75 ± 4.45 1.58 ± 0.71 1.57 ± 0.67 1.44 ± 0.77 0.221
Vitamin C (mg/1000Kcal) 24.89 ± 11.32b 33.48 ± 15.09b 41.33 ± 19.83 42.86 ± 27.21a < 0.001
Vitamin A (IU/1000Kcal) 209.25 ± 438.47 216.99 ± 98.04 231.29 ± 100.13 239.44 ± 138.68 0.188
Fruits (gr/1000 kcal) 48.90 ± 29.42b 79.24 ± 43.83b 105.45 ± 70.05 113.86 ± 97.87a < 0.001
Vegetables (gr/1000 kcal) 65.98 ± 45.88b 83.30 ± 48.62b 98.70 ± 53.53 110.56 ± 80.14a < 0.001
Legumes (gr/1000 kcal) 15.59 ± 9.77b 24.86 ± 15.80b 29.59 ± 16.08 33.57 ± 27.96a < 0.001
Nuts and seeds (gr/1000 kcal) 2.00 ± 1.88b 3.83 ± 3.65b 6.72 ± 6.43b 10.44 ± 15.04a < 0.001
Whole grains (gr/1000 kcal) 3.69 ± 5.02b 8.91 ± 10.70b 13.80 ± 17.02b 57.36 ± 52.62a < 0.001
  1. *Values are means ± SDs and adjusted for energy intake,** Obtained from one-way ANOVA; DPI: dietary phytochemical index. MUFA: monounsaturated fatty acid. PUFA: polyunsaturated fatty acid. a: last quartile is considered as reference quartile, b: Significant difference between quartile with reference quartile (P value < 0.05).