Table 2.
—Mixed Linear Model Analysis of the Sternum to Lung Point Distance Relative to the Pneumothorax Volume on the Thoracic Insufflation Side and Chest Level
| Variable | Coefficient |
F Test |
|
| Estimate | 95% CI | P Value | |
| Intercept, mm | 43.7 | 16.0 to 71.3 | .010 |
| Sidea | |||
| R | 54.0 | 39.5 to 68.5 | < .001 |
| L | 0.0 | Reference | … |
| Levelb | |||
| High | −20.6 | −27.7 to −13.4 | < .001 |
| Medium | 0.0 | Reference | … |
| Volume, mL | 0.11 | 0.08 to 0.13 | < .001 |
| Thoracic side (R) × volume | −0.067 | −0.11 to −0.03 | .001 |
| Thoracic side (L) × volume | 0.000 | Reference | … |
L = left; R = right.
a
Right and left thoracic sides; the left is the reference.
b
Chest level; high is between costae 2 and 3; medium is between costae 5 and 6 (reference).