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Fig. 1 | BMC Medical Research Methodology

Fig. 1

From: Oversampling and replacement strategies in propensity score matching: a critical review focused on small sample size in clinical settings

Fig. 1

Balance assessment on the matched sets obtained in each scenario of the Monte Carlo simulations. The plot on the right shows the Average Standardized Mean Differences (ASMDs), and the left-graph the proportion of matched treated. On the x-axis, the level of oversampling is represented. Matching without and with replacement are identified by the colors. The shape of the dots distinguishes between weak and strong treatment assignment. The columns of the panel grids show the proportion of treated subjects in the dataset, whereas the rows show the sample size of the dataset

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BMC Medical Research Methodology

ISSN: 1471-2288

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