Table 2. Catheter Characteristics with Yearly Unadjusted Time Trends: Hospital-wide Prevention Programme for Central Line-Associated Bloodstream Infections, University of Geneva Hospitals, 2008–2011.
| All CVCs | Time trend, IRR (95% CI) | P value | |
| Total number of catheters, N | 6352 | NA | NA |
| Dwell time, median (IQR) | 6 (3–12) | 1.05 (1.04–1.06) | <.001 |
| Jugular position, N (%) | 4272 (67.3) | 1.07 (1.04–1.10) | <.001 |
| Subclavian position, N (%) | 1319 (20.8) | 0.86 (0.81–0.90) | <.001 |
| Femoral position, N (%) | 761 (12.0) | 0.89 (0.84–0.95) | .001 |
| Multilumen catheters, N (%) | 4207 (66.2) | 1.06 (1.04–1.10) | <.001 |
| Placed in the operating theatre, N (%) | 2913 (45.9) | 1.00 (0.97–1.04) | .929 |
| Placed in the ICU, N (%) | 2647 (41.7) | 0.97 (0.94–1.01) | .116 |
| Placed in a non-ICU ward, N (%) | 786 (12.4) | 1.09 (1.02–1.16) | .007 |
| Dwell-time3 in ICU, median (IQR) | 4 (2–7) | 1.06 (1.05–1.07) | <.001 |
| Dwell-time3 in non-ICU settings, median (IQR) | 9 (4–17) | 1.06 (1.05–1.07) | <.001 |
| Dwell-time3 in medical wards1, median (IQR) | 10 (5–20) | 1.05 (1.04–1.06) | <.001 |
| Dwell-time3 in surgical wards2, median (IQR) | 8 (3–15) | 1.06 (1.05–1.08) | <.001 |
CVC: central venous catheter.
ICU: intensive care unit.
IQR: interquartile range.
IRR: incidence rate ratio.
NA: not applicable.
95% CI: 95% confidence interval.
1
Medicine: internal medicine, neurology, rehabilitation.
2
Surgery: cardiovascular, thoracic and abdominal surgery, orthopaedics, neurosurgery, urology, ear-nose-throat, trauma surgery.
3
Dwell-time: catheter-days.