summary.sisVIVE: A summary of the sisVIVE object

In sisVIVE: Some Invalid Some Valid Instrumental Variables Estimator

Description

Produces a summary of the sisVIVE object, including the estimates of the causal effect of exposure on outcome and the estimated set of invalid instruments for sequence of lambdas

Usage

## S3 method for class 'sisVIVE'
summary(object,...)

Arguments

object	a sisVIVE object
...	additional arguments for summary generic

Details

Each row summarizes an estimated causal effect of exposure on outcome and the estimated set of invalid instruments for one lambda

Value

Each row summarizes an estimated causal effect of exposure on outcome and the estimated set of invalid instruments for one lambda. For the estimated set of invalid instruments, each number is a column index number for Z that is estimated to be invalid.

Author(s)

Hyunseung Kang

See Also

predict and cv.sisVIVE

Examples

library(MASS)
library(lars)

n = 1000; L = 10; s= 3;
Z <- matrix(rnorm(n*L),n,L)
error <- mvrnorm(n,rep(0,2),matrix(c(1,0.8,0.8,1),2,2))
intD = rnorm(1); ZtoD =   rnorm(L,0,1); ZtoY = c(rnorm(s),rep(0,L-s)); DtoY = 1; intY = rnorm(1)
D = intD + Z %*% ZtoD + error[,1]
Y = intY + Z %*% ZtoY + D * DtoY + error[,2]

result = sisVIVE(Y,D,Z)
summary(result)

Example output

Loading required package: lars
Loaded lars 1.2


Call:
sisVIVE(Y = Y, D = D, Z = Z)
 Estimates of Beta    Number of Invalid IVs        Invalid IVs
         0.9554367                        0                   
         0.9990268                        1                  2
         1.0344044                        2                2,3
         1.0086483                        3              1,2,3
         1.0085856                        4            1,2,3,5
         1.0081106                        5          1,2,3,4,5
         1.0083853                        6        1,2,3,4,5,7
         1.0063534                        7      1,2,3,4,5,7,8
         1.0054089                        8   1,2,3,4,5,7,8,10
         1.0061529                        9 1,2,3,4,5,7,8,9,10
         1.0280706                        9 1,2,3,4,5,6,7,9,10
         1.0280706                        9 1,2,3,4,5,6,7,9,10
         1.0451771                        9 1,2,3,4,6,7,8,9,10
         1.0451771                        9 1,2,3,4,6,7,8,9,10

sisVIVE documentation built on May 2, 2019, 1:44 p.m.