Table 1.

Characteristics of Study Population

Variable	n	%
Age
<12 yr	278	33.8
12–18 yr	544	66.2
Sex
Male	436	53
Female	386	47
Patient status
Outpatient	463	56.3
Inpatient	359	43.7
Sedation/Anaesthesia
No sedation	250	30.4
Mild sedation	450	54.7
General anesthesia	122	14.8
Biopsy obtained
Yes	210	25.5
No	612	74.5