| Characteristic | Without postoperative AE of IP (n = 112) | With postoperative AE of IP (n = 8) | P |
---|---|---|---|---|
Age, years |  | 74.5 (50–90) | 71.5 (60–85) | N.S. |
Sex | Male | 91 | 6 | Â |
Female | 21 | 2 | N.S. | |
Smoking status | Never | 7 | 0 | Â |
Current or former | 105 | 8 | N.S. | |
Brinkman Index |  | 900 (0–4400) | 850 (200–2380) | N.S. |
HRCT IP pattern | UIP | 52 | 6 | Â |
Non-UIP | 60 | 2 | N.S. | |
Pulmonary emphysema | Yes | 85 | 7 | Â |
No | 27 | 1 | N.S. | |
Treatment agents for preexisting IP | Steroids | 5 | 0 | N.S. |
Antifibrotic agents | 1 | 0 | N.S. | |
Pulmonary function test results | VC (mL) | 3290 (1680–5790) | 3025 (1920–3910) | N.S. |
% predicted VC | 100.0 (55–151) | 88.0 (82–106) | 0.044 | |
FVC (mL) | 3290 (1560–5790) | 2970 (1920–3910) | N.S. | |
% predicted FVC | 102.1 (56–162) | 92.0 (86–114) | N.S. | |
% predicted FEV1.0 | 69.9 (41.5–93.1) | 77.6 (55.3–82.4) | N.S. | |
% predicted DLco | 74.0 (17–133) | 63.0 (48–116) | N.S. | |
Laboratory data | KL-6 (U/mL) | 487.0 (163–5051) | 599.0 (233–1386) | N.S. |
SP-D (ng/mL) | 109.0 (21.0–542.0) | 156.0 (62.1–530.0) | N.S. | |
SP-A (ng/mL) | 49.8 (17.4–291.6) | 67.3 (26.9–143.0) | N.S. | |
GAP index* |  | 3 (0–6) | 2.5 (1–4) | N.S. |
Surgical procedure | Lobectomy | 75 | 8 | 0.047 |
Segmentectomy | 23 | 0 | N.S. | |
Wedge resection | 14 | 0 | N.S. |