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Table 5 Comparison of intakes of each food group from dietary records and food frequency questionnaires for Japanese athletes

From: Development and validation of a food frequency questionnaire for Japanese athletes (FFQJA)

  DR (g/day) FFQJA (g/day) Correlation coefficient
Median (Interquartile range) Median (Interquartile range) Crude (95% CI) Energy-adjusted (95% CI) ICC (95% CI)
Cereals 596.4 (479.6, 818.0) 680.8 (526.4, 938.6) 0.682 (0.521–0.796) 0.431 (0.218–0.60) 0.609 (0.448–0.732)
Potatoes 34.4 (18.9, 56.4) 12.6 (6.3, 18.9) 0.207 (−0.022–0.415) 0.299 (0.074–0.495) 0.121 (−0.103–0.334)
Sugar 5.3 (3.1, 8.0) 0.0 (0.0, 4.2) −0.005 (− 0.230–0.221) − 0.034 (− 0.258–0.193) 0.076 (− 0.147–0.293)
Nuts and seeds 1.0 (0.2, 2.7) 0.0 (0.0, 1.1) 0.403 (0.186–0.582) 0.413 (0.198–0.590) 0.335 (0.123–0.518)
Green and yellow vegetables 78.7 (48.2, 123.8) 58.2 (32.6, 90.8) 0.385 (0.167–0.567) 0.431 (0.218–0.605) 0.302 (0.086–0.490)
Other vegetables 129.6 (101.4, 169.0) 105.6 (60.1, 159.2) 0.112 (−0.117–0.330) 0.152 (− 0.077–0.366) − 0.024 (− 0.244–0.198)
Fruits 117.5 (54.3, 247.8) 131.9 (77.7, 302.7) 0.478 (0.271–0.643) 0.513 (0.312–0.670) 0.432 (0.233–0.596)
Mushrooms 6.4 (2.9, 11.8) 4.2 (2.1, 6.4) 0.424 (0.210–0.599) 0.488 (0.283–0.650) 0.221 (0.000–0.422)
Seaweed 2.4 (1.2, 4.7) 0.4 (0.2, 1.1) 0.123 (−0.106–0.340) 0.141 (−0.088–0.356) 0.116 (−0.108–0.329)
Beans 30.1 (13.3, 50.8) 25.6 (14.3, 43.8) 0.358 (0.137–0.545) 0.461 (0.252–0.629) 0.357 (0.147–0.536)
Fish 45.0 (26.0, 61.9) 39.3 (27.0, 63.9) 0.177 (−0.052–0.389) 0.180 (− 0.049–0.391) 0.146 (− 0.078–0.356)
Meat 151.9 (101.4, 202.5) 132.4 (97.5, 215.9) 0.421 (0.207–0.597) 0.415 (0.200–0.592) 0.379 (0.172–0.554)
Eggs 43.6 (28.0, 64.6) 42.5 (25.4, 64.0) 0.378 (0.159–0.562) 0.329 (0.106–0.521) 0.406 (0.203–0.575)
Dairy products 133.1 (75.9, 216.4) 147.8 (65.0, 258.1) 0.506 (0.304–0.665) 0.532 (0.106–0.521) 0.495 (0.308–0.646)
Oil 15.0 (10.6, 21.5) 19.3 (12.8, 27.7) −0.147 (−0.362–0.082) −0.271 (−0.047–[− 0.044]) − 0.157 (− 0.365–0.067)
Sweets 35.7 (12.9, 49.0) 55.7 (29.6, 89.9) 0.280 (0.054–0.479) 0.361 (0.140–.547) 0.179 (−−0.044–0.385)
Luxury drinks 82.6 (32.9, 174.9) 215.0 (52.5, 564.4) 0.313 (0.089–0.507) 0.276 (0.050–0.475) 0.212 (−0.009–0.414)
Seasonings 246.7 (196.6, 314.0) 27.3 (18.2, 40.1) 0.306 (0.081–0.501) 0.251 (0.023–0.454) 0.104 (−0.120–0.318)
  1. n = 78
  2. DR Dietary records, FFQJA Food frequency questionnaire for Japanese athletes
  3. Crude correlation coefficient: Spearman’s correlation coefficients
  4. Energy-adjusted correlation coefficients were calculated using an energy density method
  5. ICC Intraclass correlation coefficients
  6. 95% CI: 95% confidence interval