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. 2023 Aug 9;23:479. doi: 10.1186/s12877-023-04173-w

Table 2.

BDHQ results by quartiles of protein intake (N = 833)

Characteristics mean/n SD/% Protein intake (%Energy)
Q1
–14.7
 N = 208
Q2
–16.7
 N = 208
Q3
–19.1
 N = 209
Q4
19.1–
N = 208
P value
Energy (kcal/day) 2,038 606 1,957 2,041 2,080 2,076 0.016
Carbohydrate (%E) 50.5 7.64 55.4 53.3 49.1 44.1 <0.001
Protein (%E) 17.0 3.18 13.1 15.7 17.9 21.2 <0.001
 Animal protein (%E) 10.3 3.35 6.52 9.06 11.1 14.5 <0.001
 Plant protein (%E) 6.71 1.15 6.66 6.71 6.75 6.72 0.58
  Fish (g/1,000 kcal) 42.2 25.5 20.3 34.3 45.6 68.6 <0.001
  Meats (g/1,000 kcal) 45.8 29.8 29.0 40.1 51.3 62.4 <0.001
  Eggs (g/1,000 kcal) 27.8 17.2 19.5 26.8 31.6 33.4 <0.001
  Dairy products (g/1,000 kcal) 108 67.0 90.1 111 110 121 <0.001
Fat (%E) 29.4 5.29 25.9 28.1 30.9 32.8 <0.001
 Total fatty acid (%E) 25.4 4.66 22.5 24.2 26.6 28.0 <0.001
 SFA (%E) 8.10 1.84 7.40 7.87 8.34 8.77 <0.001
 MUFA (%E) 10.3 2.14 9.18 9.88 10.9 11.4 <0.001
 PUFA (%E) 6.92 1.44 5.96 6.52 7.35 7.82 <0.001
  n-6PUFA (%E) 5.39 1.16 4.82 5.14 5.72 5.85 <0.001
  n-3PUFA (%E) 1.50 0.44 1.11 1.35 1.60 1.92 <0.001
   EPA (%E) 0.20 0.12 0.10 0.16 0.21 0.31 <0.001
   DPA (%E) 0.57 0.30 0.32 0.49 0.61 0.86 <0.001
   DHA (%E) 0.33 0.01 0.18 0.28 0.35 0.50 <0.001

P-value was assessed with trend test on mean values of each quartile

Abbreviations: SFA: saturated fat acids, MUFA: monounsaturated fat acids, PUFA: polyunsaturated fat acid, EPA: eicosapentaenoic acid, DPA: docosapentaenoic acid, DHA: docosahexaenoic acid