Confounding via Stratification Part B:

The researchers were also interested in determining if gender is a confounder or effect modifier in the relationship between electronic blanket use and stomach cancer. Below are the results stratified by gender:

Electronic Blanket Use	Females	Males
Cases	Controls	Cases	Controls
Yes	245	147	29	51
No	100	50	105	150

Calculate the stratum-specific odds ratios and compare them to the crude odds ratio from part A (= 1.32). Do you think gender is a confounder? Please, explain why or why not.