Table 2. Quantification of 16S copies in culture-negative, culture-positive, and respiratory tract flora (RTF) for bronchoalveolar lavage (BAL) samples.

Patients who were on antibiotics at the time of BAL are denoted with an asterisk next to BAL ID #. Pathology results are the results of BAL which were used for treatment clinically. Copy number of 16S is denoted at copies per microliter +/- standard error of the mean (SEM).

BAL ID #	Pathology Lab Results	VAP	Inflammation	No Inflammation	16S Copies/μl ± SEM
			No VAP	NoVAP
186	No growth	No	No	Yes	24,266 ± 624
189*	No growth	No	Yes	No	21,840 ± 706
196	No growth	No	No	Yes	10,860 ± 1,244
197*	No growth	No	Yes	No	6,160 ± 136
201*	No growth	No	No	Yes	252,533 ± 9,534
209*	No growth	No	Yes	No	134,000 ± 5,108
260*	No growth	No	No	Yes	67,533 ± 7,720
184	>100,000 S. aureus, >100,000 S. pneumoniae	Yes	No	No	413,000 ± 9,035
195*	>100,000 Citrobacter koseri, 40,000 P. aeruginosa	Yes	No	No	912,000 ± 24,248
204	>100,000 Streptococci (NOT S. pneumoniae or Enterococcus)	Yes	No	No	78,666 ± 2,130
204B	>100,000 Pseudomonas, >100,000 Enterobacter spp., 100,000 RTF	Yes	No	No	6,789,333 ± 202,403
206	>100,000 H. influenza, light RTF	Yes	No	No	669,200 ± 20,047
221	>100,000 M. catarrhalis, 20,000 K. pneumoniae	Yes	No	No	434,600 ± 16,985
226	>100,000 Acinetobacter baumannii/ haemolyticus, >100,000 RTF	No	Yes	No	134,200 ± 3,113
185	60,000 RTF	No	Yes	No	836,000 ± 42,755
211	50,000 RTF	No	No	Yes	725,800 ± 4,331
224	30,000 RTF	No	Yes	No	209,600 ± 7,480
229	50,000 RTF	No	Yes	No	476,400 ± 2,271
246*	3,000 RTF	No	Yes	No	110,933 ± 7,968
249	2,000 RTF	No	Yes	No	706,000 ± 14,089
254	4,000 RTF	No	Yes	No	174,666 ± 5,484
255	30,000 RTF	No	Yes	No	53,400 ± 6,293