Table 2. Number and percentage of air samples of two levels of bacterial and fungal counts (≤500 and >500 cfu/m3) collected from the ambulances.
| Ambulance runs | Number (%) of air samples with bacterial counts (cfu/m3) |
Number (%) of air samples with fungal counts (cfu/m3) |
||
|---|---|---|---|---|
| ≤500 | >500 | ≤500 | >500 | |
| At start*n=53 | 44(83.4) | 9(17.0) | 33(62.3) | 20(37.7) |
| During patient services n=106 | 78(73.6) | 28(26.4) | 52(49.1) | 54(50.9) |
| p-value** | <0.010 | <0.010 | ||
*One to two air samples per ambulance run were collected at the start of runs and three to four air samples were collected during patient services
** By proportional Z test