Validation of the Diagnostic Score for Acute Lower Abdominal Pain in Women of Reproductive Age

Table 5

Diagnostic indices (and 95% confidence interval) of the scoring system for appendicitis (versus nonappendicitis) and OB-GYNc (versus non-OB-GYNc) in the validation data (based on final professional diagnosis).

Diagnostic indices	Appendicitis (versus nonappendicitis)	OB-GYNc (versus non-OB-GYNc)
Sensitivity (%)	91.9 (87.1–95.3)	73.0 (60.3–83.4)
Specificity (%)	79.0 (70.0–86.4)	91.6 (87.4–94.8)
Receiver operating characteristic area	0.855 (0.811–0.898)	0.823 (0.765–0.881)
Positive likelihood ratio	4.39 (3.02–6.37)	8.73 (5.59–13.62)
Negative likelihood ratio	0.10 (0.06–0.17)	0.29 (0.20–0.44)
Positive predictive value (%)	89.2 (84.1–93.1)	69.7 (57.1–80.4)
Negative predictive value (%)	83.8 (75.1–90.5)	92.8 (88.7–95.7)