stata绘制roc曲线_使用Stata进行ROC曲线分析实例分析-roc曲线分析实例

使用Stata进行ROC曲线分析实例分析

roctab mods pre,g

. roccomp mods pre ldh cr abl,g

. roccomp mods  pre ldh cr abl

ROC                    -Asymptotic Normal–

Obs       Area     Std. Err.      [95% Conf. Interval]

————————————————————————-

pre                113     0.9273       0.0268        0.87485     0.97977

ldh                113     0.9034       0.0285        0.84752     0.95921

cr                 113     0.7998       0.0633        0.67580     0.92378

abl                113     0.1483       0.0444        0.06136     0.23528

————————————————————————-

Ho: area(pre) = area(ldh) = area(cr) = area(abl)

chi2(3) =   189.39       Prob>chi2 =   0.0000

. rocgold mods  pre ldh cr abl

——————————————————————————-

ROC                                           Bonferroni

Area     Std. Err.       chi2    df  Pr>chi2     Pr>chi2

——————————————————————————-

pre (standard)      0.9273       0.0268

ldh                 0.9034       0.0285      0.6873     1   0.4071      1.0000

cr                  0.7998       0.0633      4.9712     1   0.0258      0.0773

abl                 0.1483       0.0444    135.4836     1   0.0000      0.0000

——————————————————————————-

. roctab mods pre,d

Detailed report of sensitivity and specificity

——————————————————————————

Correctly

Cutpoint      Sensitivity   Specificity   Classified          LR+          LR-

——————————————————————————

( >= .00382 )     100.00%         0.00%       24.78%       1.0000

( >= .0053 )      100.00%         1.18%       25.66%       1.0119       0.0000

( >= .00681 )     100.00%         2.35%       26.55%       1.0241       0.0000

( >= .00703 )     100.00%         3.53%       27.43%       1.0366       0.0000

( >= .00819 )     100.00%         4.71%       28.32%       1.0494       0.0000

( >= .0102 )      100.00%         5.88%       29.20%