Table 1. Statistical Analysis of Red Flag Symptoms ^a.

Symptom	Sensitivity	(95% CI)	Specificity	(95% CI)	Likelihood Ratio
Saddle sensory disturbance	0.27	(0.12 - 0.48)	0.87	(0.81 - 0.92)	2.11
Bowel/bladder dysfunction	0.65	(0.44 - 0.82)	0.73	(0.66 - 0.80)	2.45
Saddle sensory disturbance or bowel/bladder dysfunction	0.27	(0.12 - 0.48)	0.92	(0.87 - 0.96)	3.46

^a Abbreviation: CI, confidence interval.