Table 1.

Comparison of risk perception of FNA

	Before FNA (n = 300)		After FNA (n = 368)
Perception factors	Mean	SD	Mean	SD	t-statistic
Knowledge	2.52	0.91	2.85	0.88	4.69**
Risk	2.82	1.18	4.62	0.58	24.00**
Benefit	3.27	0.99	2.50	1.01	−10.00**
Trust	3.15	0.92	2.81	0.98	−4.63**
Acceptance	3.34	1.02	2.65	1.03	−8.68**

Significance: **P ≤ 0.01.