Author(s) [source] | Year | Number of participants | Age | Sex | Mean Urine Iodine ( μg/L, μg/g Cr, or μg/24-hour) | Median Urine Iodine ( μg/L) | City/Region |
---|---|---|---|---|---|---|---|
Suzuki et al. [50] | 1965 | 2 |  |  | 1565 μg/24-hour (hospital diet) |  | Hokkaido |
Suzuki et al. [50] | 1965 | 5 |  |  | 23300 μg/24-hour (seaweed diet) |  | Hokkaido |
Suzuki et al. [50] | 1965 | 7 |  |  | 175 μg/24-hour (iodine restricted) |  | Hokkaido |
Nagataki et al. [39] | 1967 | 9 |  | Both | 3286 μg/24-hour |  | Tokyo |
Suzuki et al. [64] | 1985 | 5 | 19-26 | Male | 357 μg/24-hour |  |  |
Suzuki et al. [64] | 1985 | 10 | 19-21 | Male | 149 μg/24-hour |  |  |
Yabu et al. [65] | 1986 | 127 | 18-57 | Both | 3238 μg/L |  |  |
Yabu et al. [66] | 1988 | 127 | 18-57 | Both | 3022 μg/g Cr |  |  |
Yabu et al. [66] | 1988 | 43 | 4-10 | Both | 2756 μg/g Cr |  |  |
Yabu et al. [66] | 1988 | 30 | Infant | Both | 1854 μg/g Cr |  |  |
Yabu et al. [66] | 1988 | 24 | 11-32 | Female | 1701 μg/g Cr |  |  |
Yabu et al. [66] | 1988 | 73 | 18-27 | Female | 2845 μg/g Cr |  |  |
Nagataki [67] | 1993 | 14 |  |  | 660 μg/g Cr |  | Tohoku |
Nagataki [67] | 1993 | 13 |  |  | 1090 μg/g Cr (hospital diet) |  | Tohoku |
Nagataki [67] | 1993 | 13 |  |  | 1760 μg/g Cr (hospital diet) |  | Tokyo |
Nagataki [67] | 1993 | 22 |  |  | 1460 μg/g Cr (hospital diet) |  | Shinsyu |
Nagataki [67] | 1993 | 8 |  |  | 1370 μg/g Cr (hospital diet) |  | Kyoto |
Nagataki [67] | 1993 | 19 |  |  | 910 μg/g Cr (hospital diet) |  | Nagasaki |
Konno et al. [49] | 1994 | 4138 | Mean ~45 | Both | 3300 μg/L |  | Sapporo |
Tsuda et al. [68] | 1995 | 84 |  |  |  | 596 μg/L | Nagasaki |
Nagata et al. [47] | 1998 | 150 | Mean ~52 | Both | 1480 μg/L |  | Nishihara |
Nagata et al. [47] | 1998 | 37 |  |  | 1470 μg/24-hour |  | Nishihara |
Nagata et al. [47] | 1998 | 20 | Mean ~51 | Both | 1620 μg/L |  | Yamagata |
Nagata et al. [47] | 1998 | 54 | Mean ~49 | Both | 1200 μg/L |  | Kobe |
Nagata et al. [47] | 1998 | 80 | Mean ~50 | Both | 810 μg/L |  | Hotaka |
Ishigaki et al. [69] | 2001 | 250 | 7-14 | Both |  | 362 μg/L | Nagasaki |
Ishigaki et al. [69] | 2001 | 50 | Adult | Both |  | 208 μg/L | Hamamatsu |
Ishigaki et al. [69] | 2001 | 50 | Adult | Both |  | 1015 μg/L | South Kayabe |
Takamura et al. [70] | 2003 | 4 | 18-24 | Male | 406 μg/L |  | Nagasaki |
Zimmermann et al. [71] | 2005 | 302 | 6-12 | Both | 296 μg/L | 292 μg/L | Central Hokkaido |
Zimmermann et al. [71] | 2005 | 280 | 6-12 | Both | 728 μg/L | 741 μg/L | Costal Hokkaido |
Tomoda et al. [72] | 2005 | 47 | Mean ~53 | Both | 428 μg/g Cr |  |  |
Tomoda et al. [72] | 2005 | 21 | Mean ~56 | Both | 587 μg/g Cr |  |  |
Fuse et al. [73] | 2007 | 654 | 6-12 | Both |  | 281 μg/L | Tokyo |
Miyai et al. [74] | 2008 | 6 | Mean ~27 | Both | 560 μg/24-hour |  |  |
Miyai et al. [74] | 2008 | 14 | Mean ~27 | Both | 1110 μg/24-hour |  |  |
Orito et al. [75] | 2009 | 514 | Adult | Female (pregnant) |  | 328 μg/L | Kobe |