twoXtwoRR {EValue}

Estimate risk ratio and compute CI limits from two-by-two table

Description

Given counts in a two-by-two table, computes risk ratio and confidence interval limits.

Usage

twoXtwoRR(n11, n10, n01, n00, alpha = 0.05)

Arguments

n11

Number exposed (X=1) and diseased (D=1)

n10

Number exposed (X=1) and not diseased (D=0)

n01

Number unexposed (X=0) and diseased (D=1)

n00

Number unexposed (X=0) and not diseased (D=0)

alpha

Alpha level associated with confidence interval

Examples

# Hammond and Holl (1958 JAMA) Data
# Two by Two Table
#          Lung Cancer    No Lung Cancer
# Smoker    397            78557
# Nonsmoker 51             108778

twoXtwoRR(397, 78557, 51, 108778)