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Table 2 Energy and protein intakes and dietary TAC of 2108 old Japanese women categorized by no frailty and frailtya

From: Diet with a combination of high protein and high total antioxidant capacity is strongly associated with low prevalence of frailty among old Japanese women: a multicenter cross-sectional study

  Total (n = 2108) No frailtyb (n = 1627) Frailtyb (n = 481) P c
Median IQR Median IQR Median IQR
Energy, kcal/d 1693 1396 - 2012 1729 1425 - 2042 1589 1317 - 1905 <0.0001
Total protein, g/d 73.1 65.0 - 81.4 73.6 65.5 - 82.1 70.6 63.4 - 79.4 0.0001
Total protein, % energy 16.7 14.7 - 18.8 16.9 14.9 - 18.9 15.8 14.2 - 18.2 <0.0001
Total protein, g/kg BW/d 1.43 1.22 - 1.67 1.45 1.23 - 1.68 1.40 1.19 - 1.66 0.045
Animal protein, g/d 42.0 33.7 - 51.8 42.7 34.1 - 52.3 39.8 32.9 - 49.6 0.004
Animal protein, % energy 9.5 7.4 - 11.9 9.7 7.6 - 12.0 8.9 7.0 - 11.3 <0.0001
Plant protein, g/d 30.3 27.7 - 33.2 30.3 27.9 - 33.3 29.9 27.1 - 32.8 0.02
Plant protein, % energy 7.0 6.4 - 7.6 7.0 6.4 - 7.6 6.9 6.2 - 7.7 0.10
Dietary TAC, mmol TE/d 20.2 15.7 - 25.0 20.9 16.5 - 26.1 18.2 13.6 - 22.2 <0.0001
Dietary TAC, mmol TE/1000 kcal 11.7 9.0 - 15.1 12.0 9.4 - 15.4 10.7 7.8 - 13.9 <0.0001
  1. BW Body wight, IQR interquartile range, TAC total antioxidant capacity, TE Trolox equivalent
  2. aValues are medians and interquartile ranges
  3. bFrailty score (0-5) was defined as the sum of poor physical function (two points), exhaustion (one point), low physical activity (one point), and unintentional weight loss (one point). A score of ≥3 was classified as indicating frailty
  4. cValues were compared by Mann–Whitney signed-rank test and proportions for categorical values were compared by the chi-square test