Table 5 Cause of death of participants, according to pulmonary function categories at registration

All-cause, n (%)

11

17

21

9

58

Respiratory disease, n (%)

4 (36.4)

7 (41.2)

12 (57.1)

2 (22.2)

25 (43.1)

Lung cancer, n (%)

2 (18.2)

2 (11.8)

0 (0.0)

2 (22.2)

6 (10.3)

Cancer other than lung cancer, n (%)

0 (0.0)

2 (11.8)

2 (9.5)

2 (22.2)

6 (10.3)

Non-respiratory infection, n (%)

1 (9.1)

1 (5.9)

0 (0.0)

1 (11.1)

3 (5.2)

Cardiovascular disease, n (%)

1 (9.1)

1 (5.9)

0 (0.0)

0 (0.0)

2 (3.4)

Others, n (%)

0 (0.0)

2 (11.8)

3 (14.3)

0 (0.0)

5 (8.6)

Unknown, n (%)

3 (27.3)

2 (11.8)

4 (19.0)

2 (22.2)

11 (19.0)