Table 2.

Pathogenic NP organisms and TMP-SMX status at baseline

	Total	Not on TMP-SMX at baseline	On TMP-SMX at baseline	Previously received TMP-SMX
†Pathogenic organisms
S. pneumoniae	48 (26.5%)	9 (5%)	36 (19.9%)	3 (1.7%)
§Gram negative respiratory organism (M. catarrhalis, H. influenzae)	48 (26.5%)	7 (3.2%)	35 (19.3%)	6 (3.3)
S. aureus	44 (24.3%)	10 (5.5%)	31 (17.1%)	3 (1.7%)
Enterobacteriacae	32 (17.7%)	13 (9.9%)	18 (9.9%)	1 (0.5%)
Non-fermenters including Pseudomonas aeruginosa #	5 (2.8%)	4 (2.2%)	1 (0.5%)	0
Acinetobacter species ¶	4 (2.2%)	3 (1.7%)	1 (0.5%)	0

† 10 subjects had 2 organisms and 2 had 3 organisms isolated from a NP swab.

§M. catarrhalis n – 22; H. influenzae – n – 26

TMP-SMX exposure: More than 1 organism per subject

Organisms not included – Coagulase negative staphylococcus – 10; Streptococcus viridans – 2; other commensals – 11; no growth – 10; contaminants – 3

# p = 0.0104 (Fisher's Exact 2-tail test)

¶p = 0.048 (Fisher's Exact 2-tail test)