Table 2.
p-Values obtained from the comparison between spirometry-based (SB) and surface-guidance (SG) distribution average offsets (Student t-test) and variances (Fisher-Snedecor F-test) for each spatial direction. A Mann Whitney U test was employed for the comparison between SB and SG vector modulus distributions. Results were arranged by lesion localization and for the full data set. A significance level of 0.01 was utilized. SI (superior-inferior), LR (left–right), AP (anterior-posterior), M (vector modulus), RUL (right upper lobe), RLL (right lower lobe), RML (right middle lobe), LUL (left upper lobe), LLL (left lower lobe) and FDS (full data set).
| Student T-test |
Fischer-Snedecor F-test |
Mann Whitney U test | |||||
|---|---|---|---|---|---|---|---|
| Localization | SI | LR | AP | SI | LR | AP | M |
| RUL | 0,159 | 0,164 | 0,151 | ≪ 0,001* | ≪ 0,001* | ≪ 0,001* | ≪0,001* |
| RLL | 0,254 | 0,220 | 0,967 | ≪ 0,001* | ≪ 0,001* | ≪ 0,001* | ≪0,001* |
| RML | 0,206 | 0,899 | 0,394 | 0,043 | 0,171 | 0,017 | 0,511 |
| LUL | 0,134 | 0,407 | 0,800 | 0,018 | 0,311 | ≪ 0,001* | 0,011 |
| LLL | 0,125 | 0,144 | 0,662 | 0,288 | 0,001* | 0,111 | 0,047 |
| FDS | 0,709 | 0,297 | 0,492 | ≪ 0,001* | ≪ 0,001* | ≪ 0,001* | ≪ 0,001* |
*
Statistically significant.