. Author manuscript; available in PMC: 2010 Jan 6.

Published in final edited form as: J R Stat Soc Series B Stat Methodol. 2008 Feb 1;70(1):73–93. doi: 10.1111/j.1467-9868.2007.00628.x

Table 3.

Ecological and case-control data with a binary exposure, and the outcome stratified by a binary confounder in a generic area. In the study design we consider the ecological data consist of N₁₊₀, N₁₊₁, N and M₁₊, M₊₁, while the case-control data are n₀₁₀, n₁₁₀, n₀₁₁, n₁₁₁ and n₀₀, n₁₀, n₀₁, n₁₁.

	Ecological Z = 0			Ecological Z = 1
	Y = 0	Y = 1		Y = 0	Y = 1
X = 0		N₁₀₀	M₀₀		N₁₀₁	M₀₁
X = 1		N₁₁₀	M₁₀		N₁₁₁	M₁₁
		N₁₊₀	M₊₀		N₁₊₁	M₊₁
	Case-Control Z = 0			Case-Control Z = 1
	Y = 0	Y = 1		Y = 0	Y = 1
X = 0
X = 1	n₀₁₀	n₁₁₀	n₊₁₀	n₀₁₁	n₁₁₁	n₊₁₁
	n₀₀	n₁₀	n₊₀	n₀₁	n₁₁	n₊₁