Table 4.
Risk factors for chest tube insertion
| Variable | No chest tube (n=48) | Chest tube insertion (n=5) | P |
|---|---|---|---|
| Age (years)a | 65±14 | 69±7 | 0.600 |
|
| |||
| Sex, n | |||
| Male | 19 | 3 | 0.638 |
| Female | 29 | 2 | |
|
| |||
| Lesion size (mm)a | 34±19 | 25±16 | 0.308 |
|
| |||
| Wall thickness (biopsy site, mm)a | 14±12 | 8±6 | 0.227 |
|
| |||
| Emphysema, n | |||
| Present | 31 | 4 | 0.651 |
| Absent | 17 | 1 | |
|
| |||
| Location, n | |||
| Upper & middle lobe | 25 | 3 | |
| Lower lobe | 23 | 2 | 1 |
|
| |||
| Final diagnosis, n | |||
| Benign | 20 | 0 | 0.144 |
| Malignant | 28 | 5 | |
|
| |||
| Needle path, n | |||
| <3 cm | 12 | 0 | 0.577 |
| ≥3 cm | 36 | 5 | |
|
| |||
| Biopsy needle category, n | |||
| FNA | 31 | 4 | 0.651 |
| Core | 17 | 1 | |
FNA, fine-needle aspiration.
a
Data are mean ± standard deviation.