Panel designs, TWFE

Mrs. Young | July 17, 2025

This method also belongs to Adjusted methods (Backdoor C.).

Table of Contents

  1. Description & principle
  2. Reference articles
  3. Packages
  4. Assessment table

Description & principle

A clear, technical yet accessible explanation of the method, its core principle(s).

Major variants

optional

If the method has variants that seem important, either already widespread or promising and well documented.

Further online resources

References to useful online resources to get started, e.g. explanation blogs

Reference articles

Method

  • One or a few key academic references that introduce or formalize the method.

Research applications

With RS data in Ecology / Biodiversity

  • A

Without RS data (Ecology domain)

optional

  • B

Packages

Python

R

Code Cells

optional

Assessment table

CategoryCriteriaAssessment
OutcomeObjectiveEffect estimation
 EstimandATT, ATE, CATE
 ValidityVarying
Data compatibilityTypePanel data (many samples)
 Required TS length≥ 10
 Handles few samples10 to 100
 Handles huge datasets (n)Yes
 Handles missing dataNo: requires prelim. correction
 RS-data provenFew applications
AssumptionsFunctional formLinear, Log-linear
 No unobserved confoundersTime-varying OR site-varying
 No interferenceRequired
 Well-defined treatmentsRequired
 Common support (positivity)Recommended
 Causal Markov ConditionRecommended
 FaithfulnessRecommended
 IDDRelaxes assumption
 Model specific assumptionNo specific
Model propertiesRequires explicit processesOptional
 Exposure typeBinary, Categorical, Continuous / Time-varying
 Number of variablesMultivariate
 Handles lag effectsNo
 Propagates uncertaintyModel-specific tools
 Parametric natureParametric
PackagesLanguageR, Python, Others
 UsageTechnical but well documented, Domain-specific skills

References