# Should multiple imputation be stratified by exposure group when estimating causal effects via outcome regression in observational studies?

> Research article (BMC Medical Research Methodology, 2023) · cited 20× · AI/ML

**Wikidata**: [openalex:W4321107063](https://www.wikidata.org/wiki/openalex:W4321107063)  
**Source**: https://4ort.xyz/entity/should-multiple-imputation-be-stratified-by-exposure-group-when-estimating-causal-effects-via-outcome-regression-in-obse