The R language uses the matchit package for propensity matching analysis and match The data function constructs the matched sample set, and performs Welch double sample t-test analysis and double inde

R Language use MatchIt Package for propensity matching analysis 、 Use match.data Function to build the matched sample set 、 The mean values of target variables corresponding to different groups of matched samples are Welch Double sample t Test analysis 、 Double independent samples t test

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