Table 1.

Baseline Patient and Nodule Characteristics

		Primary cytology diagnosis
	All patients	AUS	FN	SUSP	M
n	1291	130	241	411	509
Age (years)	48 ± 15	50 ± 14	50 ± 16	48 ± 15	47 ± 15
Sex (% female)	1022 (79%)	96 (74%)	193 (80%)	335 (82%)	398 (78%)
Nodule size (mm)	24 ± 14	25 ± 14	27 ± 15	24 ± 12	22 ± 14
Nodule content
Solid	817 (63%)	68 (52%)	169 (70%)	234 (57%)	346 (68%)
<25–50% cystic	451 (35%)	56 (43%)	70 (29%)	171 (42%)	154 (30%)
>75% cystic	23 (2%)	6 (5%)	2 (1%)	6 (1%)	9 (2%)

AUS, atypia of undetermined significance; FN, follicular neoplasm; SUSP, suspicious for malignancy; M, malignant.