Table 2.
Number of CFUs in H(0) samples from the four hospital units: median, interquartile range (IQR), mean and standard deviation P value comparing data of the four units by the Mann-Whitney test.
| Culture medium | (A): cardiology and hemodynamic, 33 objects | (B): first aid, 25 objects | (C): intensive care unit, 29 objects | (D): emergency unit, 12 objects | P value comparing data of the four units by the Mann-Whitney test | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median (IQR) | Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) | Mean (SD) | Median (IQR) | Mean (SD) | A versus B | A versus C | A versus D | B versus C | B versus D | C versus D | |
| TBC 36* | 9 (4 to 27) | 63.0 (157.6) | 24 (8 to 39) | 41.52 (86.9) | 2 (0 to 12) | 6.96 (9.8) | 7 (2.5 to 10) | 100.6 (318.1) | 0.136 | 0.005 | 0.232 | 0.0007 | 0.073 | 0.224 |
| TBC 22 | 9 (3 to 26) | 63.7 (170.5) | 27 (5 to 41) | 37.2 (69.8) | 2 (0 to 9) | 6.14 (11.2) | 6 (0.5 to 17) | 133.8 (432.9) | 0.095 | 0.002 | 0.233 | 0.0001 | 0.066 | 0.181 |
| E. coli | 0 (—) | 1.7 (6.6) | 0 (0 to 1) | 0.4 (0.8) | 0 (—) | 0.03 (0.2) | 0 (—) | 6.1 (20.5) | 0.048 | 0.035 | 0.058 | 0.011 | 0.043 | 0.089 |
| Coliforms | 1 (0 to 5) | 19.9 (68.5) | 8 (5 to 14) | 11.8 (13.6) | 0 (0 to 2) | 1.4 (2.8) | 1.5 (0 to 9) | 29.8 (90.1) | 0.008 | 0.006 | 0.680 | <0.001 | 0.088 | 0.128 |
| Staphylococci | 5 (2 to 14) | 44.7 (145.5) | 12 (3 to 25) | 23.7 (36.6) | 2 (0 to 3) | 4.8 (13.0) | 6.5 (2.5 to 9.5) | 88.7 (288.0) | 0.01 | 0.002 | 0.533 | 0.006 | 0,101 | 0.041 |
| MRSA** | 0 (—) | 3 (10.0) | 0 (0 to 2) | 2.0 (4.5) | 0 (—) | 0.2 (0.7) | 0 (0 to 5) | 2.3 (3.2) | 0.088 | 0.114 | 0.093 | 0.004 | 0.459 | 0.003 |
| Moulds | 0 (0 to 1) | 1.4 (4.1) | 0 (0 to 3) | 2.4 (4.3) | 0 (—) | 0.07 (0.3) | 0 (0 to 1.5) | 3.8 (8.9) | 0.224 | 0.004 | 0.551 | 0.001 | 0.317 | 0.082 |
*TBC 36 and TBC 22: total bacterial count incubating at 36°C and 22°C, respectively; **MRSA: methicillin-resistant Staphylococcus aureus.