TABLE 1 .
Baseline characteristics and bacterial colonization by living environment
| Characteristica | No. (%) with characteristic in study group |
P value | ||
|---|---|---|---|---|
| Overall population (n = 67) |
Nursing home (n = 16) |
Community (n = 51) |
||
| Age (median yrs [IQR]) | 72 (69, 79) | 78 (70, 89) | 71 (68, 76) | 0.04 |
| Male | 34 (51) | 13 (81) | 21 (41) | <0.01 |
| Race or ethnicity | 0.31 | |||
| Asian | 2 (3) | 0 (0) | 2 (4) | |
| Black or African American | 15 (23) | 6 (38) | 9 (18) | |
| White | 46 (71) | 10 (63) | 36 (73) | |
| Multiracial | 2 (3) | 0 (0) | 2 (4) | |
| Body mass index (median [IQR]) | 27 (25, 31) | 29 (26, 34) | 27 (25, 30) | 0.25 |
| Diabetes | 7 (11) | 7 (47) | 0 (0) | <0.01 |
| Indwelling medical device | 2 (3) | 2 (13) | 0 (0) | 0.05 |
| Bathed or showered in past 12 h | 37 (56) | 3 (20) | 34 (67) | <0.01 |
| Colonized with Staphylococcus aureus | ||||
| Any body site | 20 (30) | 4 (25) | 16 (31) | 0.76 |
| Nose | 14 (22) | 3 (20) | 11 (22) | 1.00 |
| MRSA | 4 (6) | 1 (7) | 3 (6) | 1.00 |
| MSSA | 10 (15) | 2 (13) | 8 (16) | 1.00 |
| Throat | 11 (17) | 2 (15) | 9 (18) | 1.00 |
| MRSA | 2 (3) | 0 (0) | 3 (4) | 1.00 |
| MSSA | 9 (14) | 2 (15) | 7 (14) | 1.00 |
| Subclavian skin | 4 (7) | 0 (0) | 4 (9) | 0.57 |
| MRSA | 2 (3) | 0 (0) | 2 (4) | 1.00 |
| MSSA | 2 (3) | 0 (0) | 2 (4) | 1.00 |
| Femoral skin | 3 (5) | 1 (6) | 2 (4) | 1.00 |
| MRSA | 2 (3) | 1 (6) | 1 (2) | 0.44 |
| MSSA | 1 (2) | 0 (0) | 1 (2) | 1.00 |
| Colonized with pathogenic GNR | ||||
| Any body site | 29 (43) | 9 (56) | 20 (39) | 0.23 |
| Nose | 19 (29) | 6 (40) | 13 (26) | 0.30 |
| Pseudomonas aeruginosa | 1 (2) | 1 (1) | 0 (0) | 0.23 |
| Acinetobacter spp. | 2 (3) | 1 (7) | 1 (2) | 0.41 |
| Enterobacteriaceae | 18 (28) | 6 (40) | 12 (24) | 0.23 |
| Throat | 16 (25) | 3 (23) | 13 (25) | 1.00 |
| Pseudomonas aeruginosa | 1 (2) | 1 (8) | 0 (0) | 0.20 |
| Acinetobacter spp. | 0 (0) | 0 (0) | 0 (0) | |
| Enterobacteriaceae | 16 (25) | 3 (23) | 13 (25) | 1.00 |
| Subclavian skin | 4 (7) | 2 (15) | 2 (4) | 0.20 |
| Pseudomonas aeruginosa | 1 (2) | 1 (8) | 0 (0) | 0.22 |
| Acinetobacter spp. | 0 (0) | 0 (0) | 0 (0) | |
| Enterobacteriaceae | 4 (7) | 2 (15) | 2 (4) | 0.20 |
| Femoral skin | 12 (18) | 7 (44) | 5 (10) | <0.01 |
| Pseudomonas aeruginosa | 2 (3) | 2 (13) | 0 (0) | 0.06 |
| Acinetobacter spp. | 1 (2) | 1 (6) | 0 (0) | 0.25 |
| Enterobacteriaceae | 11 (17) | 6 (38) | 5 (10) | 0.02 |
a
For GNR data, participants could be colonized with more than one Enterobacteriaceae species. Analysis was performed per participant. The three most common organisms from the Enterobacteriaceae family found at each body site were Escherichia coli, Klebsiella pneumoniae, and Proteus mirabilis. IQR, interquartile range; MRSA, methicillin-resistant S. aureus; MSSA, methicillin-sensitive S. aureus.