Table 2.
Factors associated with pneumococcal carriage or C. pneumoniae detection among Alpha and Hotel Company trainees
| S. pneumoniae positive | S. pneumoniae negative | OR (CI) | |
|---|---|---|---|
| n = 49 | n = 275 | ||
| Receipt of antibioticsa | 7/37 (19%) | 82/240 (34%) | 0.4 (0.2-1.1) |
| "Bay" resident (> 4 trainees per room) | 35 (71%) | 191 (69%) | 1.1 (0.6-2.2) |
| Current smoker | 30 (61%) | 142 (52%) | 1.5 (0.8-2.8) |
| Floor of barracks | |||
| Floor 1 | 7/42 (17%) | 64/233 (28%) | 0.6 (0.2-1.6) |
| Floor 2 | 20/42 (47%) | 87/233 (37%) | 1.3 (0.6-2.6) |
| Floor 3 | 15/42 (36%) | 82/233 (35%) | 1 (Ref)b |
| One or more symptomsc | 35 (71%) | 229 (83%) | 0.5 (0.3-1.0) |
| C. pneumoniae positive | C. pneumoniae negatived | OR (CI) | |
| n = 37 | n = 48 | ||
| Receipt of antibioticsa | 25 (69%) | 34 (71%) | 0.9 (0.3-2.3) |
| "Bay" resident (> 4 trainees per room) | 30 (81%) | 31 (65%) | 2.4 (0.9-6.5) |
| Current smoker | 18 (49%) | 16 (33%) | 1.9 (0.8-4.6) |
| Floor of barracks | |||
| Floor 1 | 2/34 (6%) | 9/45 (20%) | 0.2 (0-1.0) |
| Floor 2 | 11/34 (32%) | 15/45 (33%) | 0.6 (0.2-1.7) |
| Floor 3 | 21/34 (62%) | 18/45 (40%) | 1 (Ref)b |
aTrainee reported taking antibiotics during February 1-19, 2009
bTrainees living on the 3rd floor of the barracks were used as the reference group for comparison with trainees living on the first and second floors of the barracks
cOf the following symptoms: fever, chills, cough with or without sputum, difficulty breathing, wheezing, runny nose, sore throat or ear pain
d Two Alpha Company trainees with respiratory specimens that were negative for C. pneumoniae were not included in univariate analysis including one trainee who had a sample that could not be linked back to the survey data and one trainee who gave a respiratory specimen but did not complete a survey