2. The table below shows the risk of suicide during a 1 year follow-up in black and white men and women in a given country Risk per thousand over 1 year Black White 0.019 0.044 0.112 0.186 Women Men 1 EPID600 Introduction to Epidemiology a. Assume both sex and race have causal effects on death from suicide. Determine whether there is an interaction between sex and race in the additive scale by estimating and comparing the differences between expected and observed joint effects. Consider black women as the reference (unexposed). b. Determine whether there is an interaction between sex and race in the multiplicative scale by estimating and comparing the differences between expected and observed joint effects. Consider black women as the reference (unexposed). 2. The table below shows the risk of suicide during a 1 year follow-up in black and white men and women in a given country Risk per thousand over 1 year Black White 0.019 0.044 0.112 0.186 Women Men 1 EPID600 Introduction to Epidemiology a. Assume both sex and race have causal effects on death from suicide. Determine whether there is an interaction between sex and race in the additive scale by estimating and comparing the differences between expected and observed joint effects. Consider black women as the reference (unexposed). b. Determine whether there is an interaction between sex and race in the multiplicative scale by estimating and comparing the differences between expected and observed joint effects. Consider black women as the reference (unexposed)