Graphical Approach Background Assuming that a female is coded as 1 and a male is coded as 0, we have Assuming that a female is coded as 1 and a male is coded as 0, we haveFemale: log h(t; X) = log h 0 (t) +  1 x 1 = log h 0 (t) +  1 = log h 0 (t) +  1Male: log h(t; X) = log h 0 (t) +  1 x 0 = log h 0 (t) = log h 0 (t)
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