Table 2.
Number of infections
|
Incidence rate (infections/1,000 resident-months)
|
Relative risk (95%) | p-value | Attributable rate | Attributable fraction (AR%) | |||
---|---|---|---|---|---|---|---|---|
Device (263 f/u-mon) | Non-device (644 f/u-mon) | Device (IRe) | No-device (IRu) | (IRe – IRu) | ([IRe – IRu]/IRe) × 100 | |||
Total infectionsa | 87 | 110 | 331 | 171 | 1.9 (1.4–2.6) | <0.001 | 160 | 48 |
Urinary tract infectionsa | 49 | 54 | 186 | 84 | 2.2 (1.5–3.3) | <0.001 | 102 | 55 |
Pneumoniaa | 23 | 20 | 87 | 31 | 2.8 (1.5–5.4) | 0.0004 | 56 | 64 |
Other infectionsb | 15 | 36 | 57 | 56 | 1.0 (0.5–1.9) | 0.47 | 5.7 | 2 |
McGeer–s criteriac | 8 | 15 | 30 | 23 | 1.3 (0.5–3.3) | 0.27 | 7.1 | 23 |
Minimum criteriac | 12 | 10 | 46 | 16 | 2.9 (1.2–7.6) | 0.007 | 30 | 66 |
McGeer’s or minimum criteriac | 15 | 18 | 57 | 28 | 2.0 (1.0–4.3) | 0.02 | 29 | 51 |
Clinical defintion
Includes skin and soft tissue infections, Clostridium difficile colitis, conjunctivitis, upper respiratory, and lower respiratory tract infections
Includes pneumonia and/or urinary tract infections