Country (reference) | Years pre-iodized salt | Year and change in salt iodization | Years post-iodized salt | ||||
---|---|---|---|---|---|---|---|
PTC:FTC | % ATC | F:M | PTC:FTC | % ATC | F:M | ||
Basel, Switzerland [148] | 1944–1953 | 1962 | 1964–1973 | ||||
0.27 | 28.7 | 2.5 | Increase from 5 to 10Â ppm | 0.74 | 27.7 | 2.5 | |
Zurich, Switzerland [67] | 1925–1941 | 1962 | 1962–1973 | ||||
0.19 | 36.9 | 1.3 | Increase from 5 to 10Â ppm | 1.1 | 23.8 | 2.1 | |
Innsbruck, Austria [66] | 1952–1959 | 1963 | 1970–1975 | ||||
0.21 | na | 0.9 | Introduction at 10Â ppm | 1.1 | na | 1.9 | |
Tyrol, Austria [98] | 1952–1975 | 1963; 1992 | 1986–1995 | ||||
0.55 | 28.4 | na | Introduction at 10Â ppm; increase to 20Â ppm | 1.5 | 4.9 | na | |
Klagenfurt, Austria [149] | 1984–1989 | 1992 | 1990–1995 | ||||
2.6 | na | na | Increase from 10 to 20Â ppm | 4.0 | na | na | |
Krakow and Nowy Sacz, Poland [150] | 1986 | 1997 | 2001 | ||||
1.0 | na | na | Introduction at 30Â ppm | 5.9 | na | na | |
Lower Franconia, Germany [99] | 1981–1985 | 1993 | 1991–1995 | ||||
1.5 | 11.3 | 3.0 | Increased use by the food industry at 20Â ppm | 3.4 | 7.3 | 2.2 | |
Salta, Argentina [95] | 1958–1972 | 1963; 1970 | 1985–2007 | ||||
1.7 | 16.9 | 2.9 | Introduction at 40Â ppm; decrease to 33Â ppm | 3.9 | 6.4 | 4.0 | |
Galicia, Spain [84] | 1978–1985 | 1985 | 1994–2001 | ||||
2.3 | na | 4.3 | Introduction at 60 ppm | 11.5 | na | 3.4 | |
Parma, Italy [100] | 1998–2003 | 2005 | 2004–2009 | ||||
13.0 | 2.3 | 3.1 | Introduction at 30Â ppm | 13.6 | 1.0 | 3.2 | |
Shenyang, China [86] | 1992–1996 | 1995; 2000 | 1997–2009 | ||||
2.3 | 7.1 | 3.2 | Introduction at 20–60 ppm; decrease to 35 ppm | 21.9 | 2.1 | 3.6 |