Keyphrases
Instrumental Variable Method
100%
Unmeasured Confounding
100%
Confounding by Indication
100%
Preference-based
100%
Between-group
75%
Cluster Size
75%
Group Preference
75%
Instrumental Analysis
75%
Confounding
50%
Asymptotic Bias
50%
Instrumental Variable Estimation
50%
Bias Formula
50%
Number of Groups
50%
Multi-valued
25%
Closed-form Expression
25%
Finite Sample
25%
Confounding Effect
25%
Ordinary Least Squares Estimator
25%
Number of Clusters
25%
Treatment Assignment
25%
Group Size
25%
Within-group
25%
Invalid
25%
Treatment Preferences
25%
Preference-based Instruments
25%
Variation in Treatment
25%
Bias Assessment
25%
Clinical Centers
25%
Practical Guidance
25%
Random Variation
25%
Mathematics
Confounding
100%
Minimizes
28%
Asymptotic Bias
28%
Approximates
14%
Least Square
14%
Square Estimator
14%
Closed Form
14%
Confounders
14%
Treatment Assignment
14%
Random Variation
14%
Economics, Econometrics and Finance
Instrumental Variable
100%