Data source: D:/孕34周以上子痫前期分娩人群的新生儿NICU预测模型/原始数据/原始数据 - 顺产.xlsx 
Baseline cohort: 560 cases, 91 events
Training baseline cohort: 392 cases, 57 events
Internal test baseline cohort: 168 cases, 34 events
Final model training complete cases: 391 cases, 57 events
Final model internal test complete cases: 168 cases, 34 events
Bootstrap resamples planned: 1000 
Bootstrap resamples used: 631 

Performance metrics
                  metric training_apparent mean_optimism
                     auc         8.050e-01      0.034546
                   brier         8.927e-02     -0.007795
   calibration_intercept        -1.067e-07     -0.002152
 recalibration_intercept         2.161e-06      0.221565
       calibration_slope         1.000e+00      0.156055
 training_optimism_corrected internal_test bootstrap_replicates
                    0.770423        0.7759                  631
                    0.097069        0.1307                  631
                    0.002152        0.4648                  631
                   -0.221563        0.2406                  631
                    0.843946        0.8630                  631

Model coefficients for online calculator
             term  coefficient  odds_ratio standard_error     p_value ci_lower
      (Intercept)  3.46160e+00 3.18678e+01    9.54100e-01 2.85483e-04 4.911580
      DiabetesYes  1.12209e+00 3.07128e+00    3.63163e-01 2.00309e-03 1.507278
          Anemia1  5.53857e-01 1.73995e+00    4.44462e-01 2.12717e-01 0.728133
          Anemia2  3.98031e-01 1.48889e+00    4.26238e-01 3.50395e-01 0.645726
          Anemia3 -1.41380e+01 7.24345e-07    1.02348e+03 9.88979e-01 0.000000
      `24wpci`Yes -3.53315e-01 7.02356e-01    3.29541e-01 2.83655e-01 0.368173
     InfantWeight -2.16280e-03 9.97840e-01    3.64620e-04 2.99893e-09 0.997127
         MSTDPYes  5.27645e-01 1.69494e+00    4.22137e-01 2.11323e-01 0.741019
 FetalDistressYes  1.68759e+01 2.13350e+07    2.39954e+03 9.94389e-01 0.000000
            first  1.16810e-03 1.00117e+00    5.94014e-04 4.92466e-02 1.000004
           second  4.85858e-04 1.00049e+00    5.26617e-03 9.26491e-01 0.990213
         FeverYes  1.38600e+00 3.99881e+00    7.02287e-01 4.84335e-02 1.009584
   ci_upper
 206.768344
   6.258122
   4.157804
   3.433024
        Inf
   1.339870
   0.998553
   3.876832
        Inf
   1.002335
   1.010866
  15.838659
