Factors associated with unfavorable outcomes in patients with acute abdominal pain visiting the emergency department

Table 3 Accuracy of vital signs, abdominal signs, and laboratory results in predicting unfavorable outcomes in patients with acute abdominal pain

Variables	AUROC	Sensitivity	Specificity	LR + (95% CI)	LR − (95% CI)	PPV	NPV
Age ≥ 65 years	0.5530594	0.29	0.81	1.57	0.87	0.12	0.93
Vital signs
SBP < 125 mmHg	0.5605708	0.45	0.67	1.36	0.82	0.10	0.93
SBP < 100 mmHg	0.5137215	0.04	0.99	3.19	0.97	0.21	0.92
DBP < 80 mmHg	0.6280822	0.73	0.52	1.54	0.51	0.12	0.96
RR ≥ 24 breaths/min	0.5650228	0.59	0.54	1.28	0.76	0.10	0.94
Abdominal tenderness
Generalized	0.6722063	0.47	0.88	3.82	0.61	0.25	0.95
Epigastrium	0.5709132	0.24	0.90	2.44	0.84	0.17	0.93
RLQ	0.5756393	0.19	0.96	5.27	0.84	0.31	0.93
RUQ	0.610137	0.63	0.59	1.54	0.63	0.12	0.95
Laboratory results
WBC count ≥ 12,000	0.6469595	0.61	0.69	1.94	0.57	0.33	0.88
ANC > 75%	0.6689189	0.77	0.57	1.78	0.40	0.31	0.91
EDLOS > 4 h	0.7833562	0.77	0.79	3.74	0.29	0.24	0.98

AUROC area under receiver operating characteristic curve, LR + positive likelihood ratio, LR − negative likelihood ratio, PPV positive predictive value, NPV negative predictive value, CI confidence interval, SBP systolic blood pressure, DBP diastolic blood pressure, RR respiratory rate, RLQ right lower quadrant, RUQ right upper quadrant, WBC white blood cell, ANC absolute neutrophil count, EDLOS emergency department length of stay

ISSN: 1471-227X