orscoreci {PropCIs}

score confidence interval for an odds ratio in a 2x2 table [p1(1-p1)/(p2(1-p2))]

Description

score confidence interval for an odds ratio in a 2x2 table [p1(1-p1)/(p2(1-p2))]

Usage

orscoreci(x1, n1, x2, n2, conf.level)

Arguments

x1

number of successes in sample 1

n1

sample size in sample 1

x2

number of successes in sample 2

n2

sample size in sample 2

conf.level

confidence coefficient 1-\alpha

Value

A list with class '"htest"' containing the following components:

conf.int

a confidence interval for the difference in proportions.

References

Cornfield, J. (1956) A statistical problem arising from retrospective studies. In Neyman J. (ed.), Proceedings of the third Berkeley Symposium on Mathematical Statistics and Probability 4, pp. 135–148.

Miettinen O. S., Nurminen M. (1985) Comparative analysis of two rates. Statistics in Medicine 4, 213–226.

Agresti, A. 2002. Categorical Data Analysis. Wiley, 2nd Edition.