Table 2 UFP concentrations (particles/cm3) in the waiting and procedure rooms overall, and before, during, and after procedures
Location | N | Mean | SD | Median | IQR | 95th percentile | 99th percentile |
|---|---|---|---|---|---|---|---|
Waiting room | |||||||
Overall | 1105 | 14,957.4 | 6,246.8 | 14,704 | 3,974–31,700 | 26,154 | 29,711 |
Before LHR | 130 | 14,997.1 | 4,911.6 | 15,747 | 10,492–17,373 | 24,576 | 25,060 |
During LHR | 138 | 15,597.1 | 5,144.8 | 16,344 | 10,787–19,433 | 23,713 | 24,712 |
After LHR | 126 | 16,350.0 | 4,957.0 | 16,856 | 12,112–19,269 | 24,847 | 29,189 |
Procedure room | |||||||
Overall | 1087 | 22,916.8 | 24,853.5 | 15,970 | 4,882–206,674 | 72,491 | 146,442 |
Before LHR | 130 | 14,332.9 | 4798.1 | 15,035 | 10,170–16,458 | 24,420 | 26,211 |
During LHR | 138 | 55,046.1 | 47,761.2 | 37,469 | 17,671–78,690 | 158,819 | 187,185 |
After LHR | 126 | 36,551.4 | 24,623.4 | 27,534 | 18,876–47,504 | 87,263 | 116,617 |