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Table 2 Dietary components derived from the FFQs and plasma measurements by gender

From: A Taiwanese food frequency questionnaire correlates with plasma docosahexaenoic acid but not with plasma eicosapentaenoic acid levels: questionnaires and plasma biomarkers

  Women (n = 140) Men (n = 157)  
FFQ Mean SD Mean SD P value
Total energy intake (kcal/d) 1306.7 420.8 1599.6 413.9 <.0001
Protein (g) 45.3 16.9 55.8 18.8 <.0001
Protein (% energy) 14.0 3.3 14.4 3.1 0.34
Fat (g) 46.6 19.2 51.8 19.2 0.020
Fat (% energy) 32.3 8.6 30.0 7.5 0.014
Carbohydrate (g) 176.0 65.1 216.4 67.1 <.0001
Carbohydrate (% energy) 53.6 10.3 55.6 9.4 0.09
Cholesterol (mg) 149.4 93.4 216.0 115.4 <.0001
Fish consumption serving (/d)      
Deep sea fish 0.49 0.76 0.51 0.74 0.82
Other fish 0.69 0.83 0.76 0.91 0.50
Seafood 0.15 0.27 0.25 0.46 0.034
Total fish & seafood 1.33 1.37 1.51 1.48 0.28
Saturated fat (g/d) 12.2 5.1 15.0 5.8 <.0001
Monounsaturated fat (g/d) 18.8 8.9 20.8 9.8 0.07
Polyunsaturated fat (g/d) 12.7 6.8 13.8 5.5 0.15
Saturated fat (% fat) 27.5 6.0 30.1 4.9 <.0001
Monounsaturated fat (% fat) 41.3 8.1 40.5 6.5 0.31
Polyunsaturated fat (% fat) 28.1 7.8 27.9 6.9 0.77
EPA (% fat) 0.48 0.46 0.46 0.40 0.77
C22:5 (% fat) 0.20 0.14 0.22 0.12 0.26
DHA (% fat) 0.77 0.65 0.78 0.54 0.89
Plasma concentration (/dL)
Saturated fat (g) 1733 612 1774 606 0.56
Monounsaturated fat (g) 718 303 784 393 0.11
Polyunsaturated fat (g) 1726 487 1743 441 0.77
N-6 fatty acid 1511 442 1531 394 0.68
N-3 fatty acid 215.5 59.9 211.8 62.2 0.60
Marine fatty acid 147.9 45.4 146.9 47.2 0.85
EPA (20:5n-3) 20.7 6.4 19.4 4.0 0.034
DHA (22:6n-3) 127.2 42.3 127.5 46.0 0.95
Percentage of total fat, %      
Saturated fat 38.9 2.6 38.7 2.2 0.45
Monounsaturated fat 15.9 2.2 16.6 2.5 0.02
Polyunsaturated fat 39.2 3.5 38.8 3.8 0.29
N-6 fatty acid 34.3 3.4 34.1 3.6 0.56
N-3 fatty acid 4.93 0.89 4.72 0.86 0.04
Marine fatty acid 3.41 0.87 3.28 0.78 0.19
EPA (20:5n-3) 0.48 0.14 0.45 0.11 0.014
DHA (22:6n-3) 2.93 0.82 2.84 0.75 0.34