Case Processing Summary

阳性阴性

Valid N (listwise)

Unweighted

Weighted

Positivea

2

243.00

Negative

2

2815.00

Larger values of the test result variable(s) indicate stronger evidence  for a positive actual state.

a. The positive actual state is 阳性.

Area Under the Curve

Test Result Variable(s):   分类  

Area

Std. Errora

Asymptotic Sig.b

Asymptotic 95% Confidence Interval

Lower Bound

Upper Bound

.347

.017

.000

.314

.380

The test result variable(s): 分类 has at least  one tie between the positive actual state group and the negative actual state  group. Statistics may be biased.

a. Under the nonparametric assumption

b. Null hypothesis: true area = 0.5

Coordinates of the Curve

Test Result Variable(s):   分类  

Positive if Greater Than or Equal Toa

Sensitivity

1 - Specificity

4.0000

1.000

1.000

6.5000

.218

.524

9.0000

.000

.000

The test result variable(s): 分类 has at least  one tie between the positive actual state group and the negative actual state  group.

a. The smallest cutoff value is the minimum observed test value minus 1,  and the largest cutoff value is the maximum observed test value plus 1. All  the other cutoff values are the averages of two consecutive ordered observed  test values.