https://www.statsmodels.org/stable/generated/statsmodels.stats.contingency_tables.Table2x2.riskratio_confint.html
statsmodels.stats.contingency_tables.Table2x2.riskratio_confint - statsmodels 0.14.6
contingency tablesstatsmodelsconfint
https://www.rdocumentation.org/packages/fmsb/versions/0.7.0/topics/riskratio
riskratio function - RDocumentation
functionrdocumentation