Table 2. CT findings in groups with different NI values (n = 50 each).

CT finding	Group 1	Group 2	Group 3	Group 4	P-value
	NI = 15	NI = 20	NI = 30	NI = 40
Normal	11	11	10	12	0.99
Emphysema	8	10	8	7	0.91
Solid nodule	19	19	21	18	0.96
Ground glass opacity nodule	5	3	5	5	0.88
Patchy consolidation	3	6	1	2	0.24
Patchy ground glass opacity	5	6	8	6	0.88
Scarring and calcification	24	21	23	23	0.96
Lesion of pleura	7	6	2	5	0.45
Other	2	2	2	3	1.00

Note: Data are shown as numbers of lesions; some patients had more than one kind of lesion.