By specimen source
Adjusted ORa
Adjusted ORa
95% CI
95% CI
95% CI
95% CI
95% CI
95% CI
p-value
p-value
Tracheostomy aspirate
Any organism isolation
1.30
1.30
1.30
1.30
1.16 – 1.46
1.16 – 1.46
1.16 – 1.46
0.025
0.025
Pseudomonas aeruginosa isolation
0.99
0.99
0.99
0.99
0.84 – 1.17
0.84 – 1.17
0.84 – 1.17
0.95
0.95
Staphylococcus aureus isolation
0.97
0.97
0.97
0.97
0.80 – 1.19
0.80 – 1.19
0.80 – 1.19
0.90
0.90
Bronchoalveolar lavage
Any organism isolation
2.11
2.11
2.11
2.11
1.65 – 2.68
1.65 – 2.68
1.65 – 2.68
0.002
0.002
Pseudomonas aeruginosa isolation
1.25
1.25
1.25
1.25
0.69 – 2.27
0.69 – 2.27
0.69 – 2.27
0.70
0.70
Staphylococcus aureus isolation
0.99
0.99
0.99
0.99
0.48 – 2.02
0.48 – 2.02
0.48 – 2.02
0.85
0.85
Chronic P. aeruginosab
Adjusted ORc
Adjusted ORc
Adjusted ORc
95% CI
95% CI
95% CI
95% CI
p-value
p-value
p-value
Any organism isolation
2.52 2.52 2.52
1.77 – 3.58
1.77 – 3.58
1.77 – 3.58
1.77 – 3.58
0.009
0.009
0.009
Pseudomonas aeruginosa isolation 0.90 0.90 0.90 0.90 0.90 0.72 – 1.11 0.72 – 1.11 0.62 0.62 0.62
Staphylococcus aureus isolation 1.28 1.28 1.28 1.28 1.28 0.15 – 11.1 0.15 – 11.1 0.91 0.91 0.91
Excluding encounters with no diagnosis information
Adjusted ORa
Adjusted ORa
Adjusted ORa
Adjusted ORa
Adjusted ORa
95% CI
95% CI
p-value
p-value
p-value
Any organism isolation 1.28 1.28 1.28 1.28 1.28 1.15 – 1.42 1.15 – 1.42 1.15 – 1.42 0.018 0.018
Pseudomonas aeruginosa isolation 0.97 0.97 0.97 0.97 0.97 0.83 – 1.13 0.83 – 1.13 0.83 – 1.13 0.84 0.84
Staphylococcus aureus isolation 0.92 0.92 0.92 0.92 0.92 0.76 – 1.11 0.76 – 1.11 0.76 – 1.11 0.65 0.65