Table 3 Frequencies of MRSA, MSSA, and Total SA colonization at Week 4 by GI and extra-GI body site, stratified by site of original colonization, and randomized treatment group
Initial Colonization Site: | Extra-GI (N = 50) | GI (N = 63) | Cochran-Mantel-Haenszel | ||||||
|---|---|---|---|---|---|---|---|---|---|
Final Colonization Site | Organism | Probiotic (N = 18) n (%) | Placebo (N = 32) n (%) | P-value | Probiotic (N = 34) n (%) | Placebo (N = 29) n (%) | P-value | Odds Ratio | 95% Confidence Interval |
GI | MRSA | 1 (5.6) | 2 (6.3) | 1.0000 | 5 (14.7) | 4 (13.8) | 1.0000 | 1.00 | 0.29–3.43 |
MSSA | 9 (50.0) | 16 (50.0) | 0.8368 | 23 (67.7) | 21 (72.4) | 0.9105 | 0.78 | 0.34–1.83 | |
SA Total | 9 (50.0) | 17 (53.1) | 0.7588 | 25 (73.5) | 24 (82.8) | 0.7574 | 0.62 | 0.26–1.52 | |
Extra-GI | MRSA | 3 (16.7) | 3 (9.4) | 0.4485 | 5 (14.7) | 4 (13.8) | 1.0000 | 1.30 | 0.43–3.90 |
MSSA | 15 (83.3) | 19 (59.4) | 0.1332 | 16 (47.1) | 16 (55.2) | 0.8635 | 1.11 | 0.49–2.53 | |
SA Total | 16 (88.9) | 22 (68.8) | 0.2728 | 20 (58.8) | 19 (65.5) | 0.6134 | 1.08 | 0.46–2.52 | |