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Table 4 Performance measures of the simplified scoring (0 to 8) with cut-off points 3 and 2, using the original scoring system (0 to 24) and cut-off point 6 as a gold standard

From: Simplified scoring of the Actionable 8-item screening questionnaire for neurogenic bladder overactivity in multiple sclerosis: a comparative analysis of test performance at different cut-off points

Measures of performance

Test 1 (N = 141)

Test 2 (N = 137)

Cut-off

Cut-off

Cut-off

Cut-off

Point 3

Point 2

Point 3

Point 2

True Positives

43.26 %

59.57 %

40.88 %

59.85 %

True Negatives

29.79 %

26.95 %

32.85 %

31.39 %

False Positives

0.00 %

2.84 %

0.00 %

1.46 %

False Negatives

26.95 %

10.63 %

26.28 %

7.30 %

Sensitivity

0.62

0.848

0.608

0.891

Specificity

1.00

0.904

1.00

0.956

Positive Predictive Value

1.00

0.954

1.00

0.976

Negative Predictive Value

0.525

0.716

0.555

0.811

Accuracy

0.730

0.865

0.737

0.912