Table 5. Univariate analysis of factors associated with PA isolation or infection.
| Parameter | PA isolation |
PA infection |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Yes (No.) | No (No.) | OR | 95% CI | P | Yes (No.) | No (No.) | OR | 95% CI | P | ||
| Sex | |||||||||||
| Male | 9 | 45 | 1.00 | – | – | 7 | 47 | 1.00 | – | – | |
| Female | 35 | 55 | 3.18 | 1.39-7.31 | <0.01 | 32 | 58 | 3.70 | 1.50-9.15 | <0.01 | |
| Age (years) | |||||||||||
| 18-35 | 12 | 30 | 1.00 | – | – | 12 | 30 | 1.00 | – | – | |
| 36-49 | 10 | 37 | 0.68 | 0.26-1.78 | 0.43 | 9 | 38 | 0.59 | 0.22-1.59 | 0.3 | |
| ≥50 | 22 | 33 | 1.67 | 0.71-3.94 | 0.24 | 18 | 37 | 1.22 | 0.51-2.92 | 0.66 | |
| BMI (kg/m2) | |||||||||||
| <18.5 | 18 | 26 | 1.73 | 0.56-5.31 | 0.34 | 16 | 28 | 1.83 | 0.56-5.94 | 0.31 | |
| 18.5-23.9 | 20 | 59 | 0.85 | 0.29-2.48 | 0.76 | 18 | 61 | 0.94 | 0.30-2.93 | 0.92 | |
| ≥24.0 | 6 | 15 | 1.00 | – | – | 5 | 16 | 1.00 | – | – | |
| Duration of bronchiectasis symptoms (years)* | |||||||||||
| <10 | 9 | 47 | 1.00 | – | – | 8 | 43 | 1.00 | – | – | |
| ≥10 | 35 | 53 | 3.45 | 1.50-7.92 | <0.01 | 31 | 57 | 2.92 | 1.22-7.00 | 0.01 | |
| No. of acute exacerbations within 2 years* | |||||||||||
| 0-3 | 14 | 62 | 1.00 | – | – | 13 | 58 | 1.00 | – | – | |
| ≥4 | 30 | 38 | 3.50 | 1.65-7.42 | <0.01 | 26 | 42 | 2.76 | 1.27-6.00 | <0.01 | |
| HRCT score | |||||||||||
| ≤6 | 12 | 56 | 1.00 | – | – | 11 | 57 | 1.00 | – | – | |
| 7-12 | 24 | 34 | 3.29 | 1.46-7.43 | <0.01 | 21 | 37 | 2.94 | 1.27-6.81 | 0.01 | |
| ≥13 | 8 | 10 | 3.73 | 1.22-11.44 | <0.01 | 7 | 11 | 3.3 | 1.05-10.38 | 0.04 | |
| 24-hour sputum volume (mL) | |||||||||||
| ≤10 | 12 | 48 | 1.00 | – | – | 11 | 49 | 1.00 | – | – | |
| 11-30 | 9 | 26 | 1.39 | 0.52-3.72 | 0.52 | 8 | 27 | 1.32 | 0.47-3.68 | 0.59 | |
| ≥30 | 23 | 26 | 3.54 | 1.52-8.24 | <0.01 | 20 | 29 | 3.07 | 1.29-7.31 | <0.01 | |
| Cystic bronchiectasis | |||||||||||
| No | 10 | 52 | 1.00 | – | – | 8 | 53 | 1.00 | – | – | |
| Yes | 34 | 48 | 3.68 | 1.64-8.26 | <0.01 | 32 | 51 | 4.16 | 1.75-9.87 | <0.01 | |
Data in bold suggested statistically significant odds ratios. *, missing data were not imputed in this model. PA, Pseudomonas aeruginosa; OR, odds ratio; HRCT, high-resolution computed tomography.