Propensity Score Matching 편집하기 (부분)

==Matching Methods==
Several methods are used for matching units based on propensity scores:
*'''Nearest Neighbor Matching:''' Matches each treated unit with the closest untreated unit based on propensity score.
*'''Caliper Matching:''' Matches units only if their propensity scores are within a predefined threshold.
*'''Radius Matching:''' Matches treated units with all untreated units within a specified range of propensity scores.
*'''Kernel Matching:''' Uses weighted averages of untreated units within a certain range of propensity scores.
*'''Stratification Matching:''' Divides units into strata based on propensity scores and compares treated and untreated units within each stratum.