Patient demographics

Demographics (n = 92)	All (n = 92)	Stone (n = 31)	No Stone (n = 61)	P Value
Mean age (range) (yr)	50 (20–85)	50 (20–79)	49 (20–85)	.76
Sex (M/F) (%)	43:57	48:52	41:59	.52
Referral source (%)
H&N	79.3% (73/92)	83.9% (26/31)	77% (47/61)
ED	15.2% (14/92)	12.9% (4/31)	16.4% (10/61)
Other	5.4% (5/92)	3.2% (1/31)	6.6% (4/61)
Stone location (n = 50)
Submandibular system		70% (35/50)
Gland		38% (19/50)
Duct		32% (16/50)
Parotid system		30% (15/50)
Gland		24% (12/50)
Duct		6% (3/50)

Note:—H&N indicates head and neck; ED, emergency department.