Sleep apnea clinical score

Neck circumference (cm)	Not hypertensive historical features*			Hypertensive historical features
Neck circumference (cm)	None	One	Both	None	One	Both
28	0	0	1	0	1	2
30	0	0	1	1	2	4
32	0	1	2	1	3	5
34	1	2	3	2	4	8
36	1	3	5	4	6	11
38	2	4	7	5	9	16
40	3	6	10	8	13	22
42	5	8	14	11	18	30
44	7	12	20	15	25	42
46	10	16	28	21	35	58
48	14	23	38	29	48	80
50	19	32	53	40	66	110

Sleep apnea clinical score to predict the apnea-hypopnea index using the linear model of neck circumference, hypertension, and historical features of habitual snoring and partner's observation of nocturnal choking or gasping. Begin on the line of the patient's neck circumference and then choose the appropriate value based upon the presence or absence of hypertension and whether the patient has none, one, or both of the above historical features.
A clinical score of 15 or greater indicates a high risk of obstructive sleep apnea.

* Historical features are habitual snoring and partner reports of nocturnal choking or gasping.

Redrawn from: Flemons WW, Whitelaw WA, Brant R, Remmers JE. Am J Respir Crit Care Med 1994; 150:1279.

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