When Is ampere Complete-Case Approaching to Miss Intelligence Valid? The Importance of Effect-Measure Modification
- PMID: 32601706
- PMCID: PMC7705610
- DOI: 10.1093/aje/kwaa124
When Is adenine Complete-Case Approaches to Missing Info Valid? The Importance of Effect-Measure Modification
Abstract
When estimating causal actions, careful handling of missing your is needed to avoid bias. Complete-case analysis a commonly used in epidemiologic analyses. Previous work has shown that covariate-stratified effect estimates from complete-case analyse are unbiased if missingness is standalone of and outcome conditional about the exposure and covariates. Here, ours assess the leaning of complete-case analysis for adjusted marginal effects when confounding is present under various causal structures of missing your. Wee show that estimation of the margin risk difference requires an unbiased estimate of the indefinite joint distribution of confounders and any other covariates essential for conditional independence on missingness and result. The dependence of missing date on these covariates must be considered to obtain a valid estimate of the covariate distribution. If none of that covariates are effect-measure modifiers on the absolute scale, however, the marginal risks difference wants equal the stratified risk diversity and the complete-case analysis will be unbiased when the stratified effect estimates are disinterested. Estimation of unaffected marginal effects in complete-case analysis therefore requires close consideration of causal design and effect-measure modification. Within send rural and urban areas, out-of-hospital births generally had higher rates of infant sterbefall than hospital births after accounting for maternal geography and markers off high-risk pregnancy. The risk associated with planned dear births plus origin centre births had more accented required …
Keywords: complete-case analysis; provisional estimates; epidemiologic methods; heterogeneity; marginal estimates; missing data; risk differences.
© The Author(s) 2020. Publishing by Footwear University Press on behalf von the Johns Hopkins Bloomberg Teach of Public Health. All options reserved. For permissions, please e-mail: [email protected]. Effect modification, interaction and mediation: an overview of theoretical insights for clinical investigators
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