Table 3.

Predictive Parameters of STOP-BANG Questionnaire Score for Identification of Patients With OSA

STOP-BANG Score for OSA	Value, Median (IQR)
	Sensitivity	Specificity	PPV	NPV
Any (AHI >5)
≥3	0.66 (0.49–0.80)	0.50 (0.31–0.69)	0.62 (0.47–0.79)	0.52 (0.32–0.70)
≥4	0.47 (0.31–0.64)	0.71 (0.51–0.87)	0.69 (0.48–0.86)	0.50 (0.34–0.66)
≥5	0.13 (0.04–0.28)	0.93 (0.76–0.99)	0.71 (0.29–0.96)	0.44 (0.31–0.58)
Moderate-to-severe (AHI >15)
≥3	0.77 (0.46–0.95)	0.45 (0.32–0.60)	0.26 (0.13–0.42)	0.89 (0.71–0.98)
≥4	0.54 (0.25–0.81)	0.64 (0.50–0.77)	0.27 (0.12–0.48)	0.85 (0.70–0.94)
≥5	0.31 (0.09–0.61)	0.94 (0.84–0.99)	0.57 (0.18–0.90)	0.85 (0.73–0.93)
Severe (AHI >30)
≥3	0.67 (0.22–0.96)	0.42 (0.29–0.55)	0.10 (0.03–0.24)	0.93 (0.76–0.99)
≥4	0.67 (0.22–0.96)	0.63 (0.50–0.75)	0.15 (0.04–0.35)	0.95 (0.83–0.99)
≥5	0.50 (0.12–0.88)	0.93 (0.84–0.98)	0.43 (0.10–0.82)	0.95 (0.86–0.99)

Abbreviations: AHI, apnea-hypopnea index; IQR, interquartile range; NPV, negative predictive value; OSA, obstructive sleep apnea; PPV, positive predictive value; STOP-BANG, snoring, tiredness, observed apneas, high blood pressure, body mass index, age, neck sizes, gender.