Clinical Scoring for Diagnosis of Acute Lower Abdominal Pain in Female of Reproductive Age

Table 5

Diagnostic indices (and 95% confidence interval; CI) of the scoring scheme for diagnosis of appendicitis and common obstetrics and gynecological conditions (OB-GYNc).

Diagnostic indices	Appendicitis (95% CI)	OB-GYNc (95% CI)
Sensitivity (%)	89.25 (85.01, 92.63)	66.67 (54.29, 77.56)
Specificity (%)	70.00 (60.96, 78.02)	94.85 (91.88, 96.97)
Positive likelihood ratio	2.97 (2.26, 3.92)	12.94 (7.91, 21.17)
Negative likelihood ratio	0.15 (0.11, 0.22)	0.35 (0.25, 0.49)
Positive predictive value (%)	87.37 (82.94, 90.99)	73.02 (60.35, 83.42)
Negative predictive value (%)	73.68 (64.61, 81.49)	93.15 (89.90, 95.61)