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Table 3 Median of iodine intake and excretion across three dietary patterns identified by cluster analysis (n = 195, Japanese men)a

From: Adequacy of iodine intake in three different Japanese adult dietary patterns: a nationwide study

 

All

Cluster I (Rice and vegetables)

Cluster II (Meat, non-Japanese noodles, and sugar sweetened beverages)

Cluster III (Fish, Japanese noodles, and alcohol)

p-value†

 

n

Median

IQR

n

Median

IQR

n

Median

IQR

n

Median

IQR

 

Total energy intake (kcal/d)

195

2357

2053, 2654

101

2298

2040, 2540

34

2372

2004, 2704

60

2400

2090, 2762

0.22

Crude iodine intake (μg/d)

195

632

210, 2025

101

1068

245, 2636

34

279

119, 1028

60

577

224, 1692

0.005

Habitual iodine intake (μg/d)

195

698

396, 1310

101

907

501, 1548

34

335

231, 535

60

625

397, 1068

-

Iodine excretion (μg/d)

179

417

203, 1297

95

409

203, 1448

30

344

183, 898

54

467

214, 1014

0.67

Iodine excretion (μg/gCre/d)

179

268

128, 817

95

267

134, 1034

30

201

109, 496

54

359

146, 796

0.41

  1. IQR interquartile range
  2. aIodine intake was assessed with 4-day dietary records and iodine excretion by 24-h urine collection. Habitual iodine intake was calculated using the Best-Power method
  3. † The Kruskal-Wallis test was used to test the median differences among clusters