Table 7.
CT parameters in subjects according to sputum microbiology
| Frequency | %LAA<−950 | E/I MLD | Pi10 | |
|---|---|---|---|---|
| Potentially Pathogenic Bacteria | ||||
| Culture positive | 55 | 10.9 (17.2) | 0.92 (0.07) | 3.79 (0.12) |
| Culture negative | 51 | 15.1 (24.0) | 0.90 (0.07) | 3.78 (0.09) |
| P value | – | 0.260 | 0.152 | 0.146 |
| Haemophilus influenzae | ||||
| Culture positive | 31 | 11.5 (18.0) | 0.92 (0.08) | 3.79 (0.11) |
| Culture negative | 75 | 13.3 (20.0) | 0.91 (0.07) | 3.79 (0.10) |
| P value | – | 0.370 | 0.207 | 0.197 |
| Moraxella catarrhalis | ||||
| Culture positive | 8 | 12.4 (23.1) | 0.93 (0.07) | 3.78 (0.10) |
| Culture negative | 98 | 12.5 (20.3) | 0.91 (0.07) | 3.79 (0.11) |
| P value | – | 0.981 | 0.720 | 0.549 |
| Streptococcus pneumoniae | ||||
| Culture positive | 18 | 10.2 (9.9) | 0.92 (0.05) | 3.83 (0.11) |
| Culture negative | 88 | 14.3 (24.9) | 0.91 (0.08) | 3.79 (0.09) |
| P value | – | 0.501 | 0.626 | 0.203 |
| Staphylococcus aureus | ||||
| Culture positive | 6 | 13.5 (22.4) | 0.91 (0.08) | 3.74 (0.05) |
| Culture negative | 100 | 12.5 (20.6) | 0.91 (0.07) | 3.80 (0.11) |
| P value | – | 0.667 | 0.682 | 0.039* |
| Pseudomonas aeruginosa | ||||
| Culture positive | 6 | 21.4 (27.5) | 0.95 (0.06) | 3.83 (0.16) |
| Culture negative | 100 | 12.0 (20.1) | 0.91 (0.07) | 3.79 (0.11) |
| P value | – | 0.367 | 0.034* | 0.498 |
Frequency given as number of subjects. For CT parameters, values represent medians and IQR. *P < 0.05 using Mann Whitney U test