scholarly journals On two-stage estimation of structural instrumental variable models

Biometrika ◽  
2017 ◽  
Vol 104 (4) ◽  
pp. 881-899 ◽  
Author(s):  
Byeong Yeob Choi ◽  
Jason P Fine ◽  
M Alan Brookhart
Keyword(s):  
Instrumental Variable ◽  
Two Stage ◽  
Stage Estimation

scholarly journals Instrumental Variable Estimation with the R Package ivtools

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Arvid Sjolander ◽  
Torben Martinussen
Keyword(s):  
Instrumental Variable ◽  
Linear Models ◽  
Proportional Hazards ◽  
R Package ◽  
Cox Proportional Hazards ◽  
Causal Effects ◽  
Two Stage ◽  
Instrumental Variable Estimation ◽  
Cox Proportional Hazards Models ◽  
Stage Estimation

Abstract Instrumental variables is a popular method in epidemiology and related fields, to estimate causal effects in the presence of unmeasured confounding. Traditionally, instrumental variable analyses have been confined to linear models, in which the causal parameter of interest is typically estimated with two-stage least squares. Recently, the methodology has been extended in several directions, including two-stage estimation and so-called G-estimation in nonlinear (e. g. logistic and Cox proportional hazards) models. This paper presents a new R package, ivtools, which implements many of these new instrumental variable methods. We briefly review the theory of two-stage estimation and G-estimation, and illustrate the functionality of the ivtools package by analyzing publicly available data from a cohort study on vitamin D and mortality.

scholarly journals Bias in estimating the causal hazard ratio when using two-stage instrumental variable methods

2015 ◽  
Vol 34 (14) ◽  
pp. 2235-2265 ◽  
Author(s):  
Fei Wan ◽  
Dylan Small ◽  
Justin E. Bekelman ◽  
Nandita Mitra
Keyword(s):  
Instrumental Variable ◽  
Hazard Ratio ◽  
Two Stage

Two-Stage and Multi-Stage Estimation

2019 ◽  
pp. 429-452 ◽  
Author(s):  
N. Mukhopadhyay
Keyword(s):  
Two Stage ◽  
Multi Stage ◽  
Stage Estimation

scholarly journals Perempuan dan Kesejahteraan Rumah Tangga Sektor Informal di Indonesia

2020 ◽  
Vol 10 (1) ◽  
pp. 43-54
Author(s):  
Vitriyani Tri Purwaningsih
Keyword(s):  
Family Life ◽  
Instrumental Variable ◽  
Two Stage ◽  
Indonesia Family Life Survey

Rumah tangga yang dipimpin oleh perempuan cenderung lebih banyak berkerja pada sektor informal yang memiliki pendapatan rendah. Penelitian ini bertujuan untuk melihat kesejahteraan antara pekerja informal dan formal di antara rumah tangga yang dipimpin oleh seorang perempuan. Data yang digunakan merupakan data sekunder yang berasal dari Indonesia Family Life Survey (IFLS) 2014, dengan metode analisis Two Stage LeastSquare (2SLS) menggunakan pendekatan instrumental variable. Temuan dari penelitian ini menyatakan bahwa rumah tangga yang dikepalai oleh perempuan yang bekerja di sektor informal memiliki kesejahteraan yang lebih rendah dibandingkan dengan rumah tangga sektor formal. Usia kepala rumah tangga perempuan yang lebih dewasa, memiliki lahan pertanian dan tabungan mampu meningkatkan pengeluaran per kapita bulanan.Penelitian ini menyimpulkan bahwa adanya kesenjangan antar sektor namun kepemilikan aset dapat meningkatkan kesejahteraan di antara rumah tangga perempuan.

Equivariant two-stage estimation of a noral mean

1985 ◽  
Vol 4 (1-2) ◽  
pp. 43-57
Author(s):  
John I. Marden
Keyword(s):  
Two Stage ◽  
Stage Estimation
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