Compute test statistic for effect ratio

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Description

Computes statistic in used for inference on effect ratio in equation (2) of Section 3.3 of Baiocchi (2010). Called by eff.ratio when finding estimate and permutation based confidence interval for effect ratio.

Usage

1
stat.lambda(lambda, dta, match)

Arguments

lambda

Hypothesized value of the effect ratio

dta

Data frame where first column is outcome and second column is treatment

match

Data frame where first column contains indices for those individuals encouraged into treatment by instrumental variable and second column contains indices for those individuals discouraged from treatment by instrumental variable

Value

Returns the value of the statistic described above

Author(s)

Joseph Rigdon jrigdon@stanford.edu

References

Baiocchi M, Small D, Lorch S, Rosenbaum P (2010). Building a stronger instrument in an observational study of perinatal care for premature infants. Journal of the American Statistical Association, 105(492), 1285-1296.

See Also

eff.ratio