5. Comparison of risk of malignancy among different studies.

DC	Present study				First edition TBSRTC		Second edition TBSRTC			Bongiovanni et al. (12)			Sheffield et al. (19)
	N	NIFTP=Ca (%)	NIFTP≠Ca (%)		(%)		NIFTP=Ca (%)	NIFTP≠Ca (%)		N	%		N	95% CI (%)
DC, diagnostic category; NIFTP, non-invasive follicular thyroid neoplasm with papillary-like nuclear features; Ca, carcinoma.
I	42	59.5	57.1		1−4		5−10	5−10		530	16.8		641	11−26
II	36	41.7	38.9		0−3		0−3	0−3		1,563	3.7		2,176	4−9
III	90	50.0	50.0		5−15		10−30	6−18		957	15.9		805	19−38
IV	29	34.5	31.0		15−30		25−40	10−40		1,791	26.1		2,183	27−40
V	200	78.5	78.5		60−75		50−75	45−60		501	75.2		886	50−79
VI	725	99.4	99.3		97−99		97−99	94−96		1,020	98.6		1,353	98−100