Hepatitis C virus enhances incidence of idiopathic pulmonary fibrosis

Table 4 Characteristics of patients with IPF in the HCV-group

Case	Age (yr)1	Sex	Liver disease1	Smoking index2	Age at the time of IPF onset	Period after IPF development2	Alive or death2	Cause of death
1	49	M	LC	25	57	5.7	Death	HCC
2	50	M	CH	38	62	12.3	Death	IPF
3	52	M	CH	0	73	3.8	Death	IPF
4	57	M	LC	28	68	8.7	Death	d-LC
5	58	M	LC	22	68	1.1	Death	IPF
6	61	M	LC	0	71	6	Death	IPF
7	61	F	LC	30	66	3.2	Death	IPF
8	62	M	LC	0	72	10.2	Death	HCC
9	62	F	LC	5	66	3.5	Death	d-LC
10	63	M	CH	26	75	10.6	Alive
11	63	M	CH	34	64	12.1	Death	HCC
12	64	M	CH	40	69	10.1	Alive
13	66	F	CH	24	79	1.8	Alive
14	69	M	LC	0	70	2.3	Death	HCC
15	70	M	LC	42	76	4.1	Death	HCC

CH: Chronic hepatitis; d-LC: Decompensated liver cirrhosis; HCC: Hepatocellular carcinoma; IPF: Idiopathic pulmonary fibrosis; LC: Liver cirrhosis.

¹Characteristics of patients at the first consultation;

²Smoking index = (package/d) × year, Smoking index indicates the sum of before and after first consultation; Period after IPF development, period (yr) between onset of IPF and final consultation; Alive or death, alive or death at the final consultation