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Last data update: 2014.03.03

R: Calculation of confidence intervals (based on normal...

ci	R Documentation

Calculation of confidence intervals (based on normal approximation or t-distribution)

Calculation of confidence intervals; based on normal approximation or t-distribution.

ci(TE, seTE, level=0.95, df=NULL)

`TE`	Estimated treatment effect.
`seTE`	Standard error of treatment estimate.
`level`	The confidence level required.
`df`	Degrees of freedom (for confidence intervals based on t-distribution).

List with components

`TE`	Estimated treatment effect.
`seTE`	Standard error of treatment estimate.
`lower`	Lower confidence limits.
`upper`	Upper confidence limits.
`z`	Test statistic (either z-score or t-score).
`p`	P-value of test with null hypothesis `TE=0`.
`level`	The confidence level required.
`df`	Degrees of freedom (t-distribution).

This function is primarily called from other functions of the library meta, e.g. forest.meta, summary.meta.

data.frame(ci(170, 10))
data.frame(ci(170, 10, 0.99))
data.frame(ci(1.959964, 1))
data.frame(ci(2.2621571628, 1, df=9))