Group

Sensitivity

Specificity

Positive predictive value

Negative predictive value

Diagnostic accuracy

Observation group (n = 6)

71.43 (5/7)

66.67 (2/3)

77.78 (7/9)

60.00 (3/5)

60.00 (6/10)

Control group (n = 5)

42.86 (3/7)

33.33 (1/3)

44.44 (4/9)

40.00 (2/5)

30.00 (3/10)

χ²

14.761

12.012

16.982

9.631

14.779

P

<0.001

<0.001

<0.001

<0.001

<0.001