Table 1 Questions R3 and R4, aimed to compare the degree of concern of respondents when the same results were expressed in terms of % excess and Time Needed to Harm (TNH). English translation from the Italian

R3

% excess

From 2001 to 2006, death rates from cancer in Livorno-Collesalvetti were 4.5% higher than in Tuscany as a whole, with 620 overall deaths every year.

Please state your concern about this result on a scale ranging from 0 (no concern) to 10 (extremely concerned).

TNH

From 2001 to 2006, we observed 1 more death from cancer every 13 day in Livorno-Collesalvetti relative to Tuscany as a whole.

Please state your concern about this result on a scale ranging from 0 (no concern) to 10 (extremely concerned).

R4

% excess

From 2001 to 2006, we observed the following results in Livorno-Collesalvetti*:

a-The risk of death from sexual glands is 25% higher than in Tuscany, with an overall number of 13 deaths every year.

b- The risk of death from thyroid cancer is 60% higher than in Tuscany, with an overall number of 2 deaths every year.

c- The risk of death from lung cancer is 4% higher than in Tuscany, with an overall number of 27 deaths every year.

Please, tick which result is the most concerning and which one is the least concerning to you.

(*) results refer to women.

TNH

From 2001 to 2006 we observed the following results in Livorno-Collesalvetti*:

a-one more death every 4 months and a half relative to Tuscany from sexual glands cancer.

b-one more death every 14 months and a half relative to Tuscany from thyroid cancer.

c- one more death every 12 months, relative to Tuscany from lung cancer.

Please, tick which result is the most concerning and which one is the least concerning to you.

(*) results refer to women.