Country (reference) | Year | No. autopsy cases | % with occult thyroid cancer |
---|---|---|---|
Probable deficient iodine intake (UIC < 100 μg/L) (n = 11) | |||
Italy [151] | 1982 | 111 | 3.6 |
Chile [152] | 1984 | 274 | 2.9 |
Poland [108] | 1975 | 110 | 6.6 |
Portugal [153] | 1979 | 600 | 1.0 |
Israel [154] | 1981 | 260 | 4.2 |
Germany [155] | 1987 | 1020 | 6.1 |
Spain [156] | 1993 | 100 | 22.0 |
Belarus [157] | 1993 | 215 | 8.8 |
Ukraine [158] | 1996 | 162 | 10.8 |
Guatemala [159] | 2005 | 150 | 2.0 |
Hungary [109] | 2005 | 222 | 5.0 |
Mean | Â | Â | 6.6 |
Weighted mean | Â | Â | 5.3 |
Probable sufficient iodine intake (UIC = 100–299 μg/L) (n = 10) | |||
Canada [108] | 1975 | 100 | 6.0 |
Sweden [160] | 1981 | 500 | 6.4 |
USA [161] | 1988 | 138 | 2.9 |
Brazil [162] | 1989 | 300 | 1.0 |
Argentina [163] | 1989 | 100 | 11.0 |
Iceland [164] | 1992 | 199 | 6.0 |
Singapore [165] | 1994 | 444 | 9.0 |
Austria [110] | 2001 | 118 | 8.6 |
Greece [166] | 2002 | 160 | 5.6 |
Turkey [167] | 2011 | 108 | 3.7 |
Mean | Â | Â | 6.0 |
Weighted mean | Â | Â | 6.0 |
Probable excessive iodine intake (UIC ≥ 300 μg/L) (n = 10) | |||
USA [168] | 1952 | 429 | 0.9 |
USA [169] | 1955 | 1000 | 2.8 |
USA [170] | 1955 | 221 | 1.4 |
USA [171] | 1964 | 100 | 4.0 |
USA [172] | 1966 | 300 | 2.7 |
USA [173] | 1969 | 220 | 0.5 |
USA [174] | 1974 | 157 | 5.7 |
Columbia [108] | 1975 | 607 | 5.6 |
Hungary [109] | 2005 | 221 | 4.5 |
Brazil [175] | 2006 | 166 | 7.8 |
Mean | Â | Â | 3.6 |
Weighted mean | Â | Â | 3.3 |
Studies of Japanese populations in areas of excessive iodine intake (n = 5) | |||
USA, Japanese [176] | 1971 | 100 | 24.0 |
Japan [174] | 1974 | 1096 | 17.9 |
USA, Japanese [108] | 1975 | 248 | 24.2 |
Japan [108] | 1975 | 1167 | 28.4 |
Japan [111] | 1990 | 408 | 15.7 |
Mean | Â | Â | 22.0 |
Weighted mean | Â | Â | 22.4 |