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Table 2 Mean matching rate/mean lower CI limit of the matching rate at interim and final analysis for the naive approach and the resampling CI method for different numbers of patients in the control group

From: Adaptive propensity score procedure improves matching in prospective observational trials

  Interim Final Interim Final
n control Naiv   99%-CI  
50 0.89 0.79 0.49 0.92
75 0.93 0.81 0.58 0.92
100 0.95 0.82 0.64 0.92
125 0.96 0.83 0.67 0.92
150 0.97 0.84 0.70 0.92
175 0.98 0.84 0.72 0.92
200 0.98 0.84 0.73 0.92
225 0.98 0.85 0.74 0.92
250 0.99 0.85 0.76 0.92
275 0.99 0.85 0.76 0.92
300 0.99 0.86 0.77 0.92
  95%-CI   90%-CI  
50 0.54 0.91 0.56 0.90
75 0.62 0.91 0.64 0.90
100 0.67 0.91 0.68 0.91
125 0.70 0.91 0.71 0.91
150 0.72 0.91 0.73 0.91
175 0.74 0.91 0.75 0.91
200 0.75 0.91 0.76 0.91
225 0.76 0.91 0.77 0.91
250 0.77 0.91 0.78 0.91
275 0.78 0.91 0.79 0.91
300 0.79 0.91 0.80 0.91
  1. The resampling CI method is applied for different confidence levels (αCI{0.01,0.05,0.1})
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