Table 2 Preoperative length of stay and surgical site infection (SSI) in the cohort
From: Effect of preoperative hospital stay on surgical site infection in Chinese cranial neurosurgery
Preoperative length of stay (day, media[range]) | Partici-pants, n | SSI, n | Adjusted Odd Ratio(95%CI) | ||
|---|---|---|---|---|---|
Model 1 * | Model 2† | Model3‡ | |||
Total | |||||
144 | 9 | 1.000(reference) | 1.000(reference) | 1.000(reference) | |
352 | 27 | 1.254(0.574–2.739) | 0.913(0.408–2.041) | 0.975(0.417,2.281) | |
76 | 18 | 4.714(1.994–11.142) | 3.548(1.456–8.644) | 2.830(1.092,7.332) | |
Q4(7[≥ 7]) | 28 | 7 | 5.141(1.711–15.445) | 4.721(1.496–14.899) | 4.039(1.164,14.015) |
P for trend | 0.000 | 0.000 | 0.001 | ||
Increase per day | 1.423(1.211–1.672) | 1.428(1.196–1.706) | 1.387(1.147,1.677) | ||
Deep§ | |||||
144 | 6 | 1.000(reference) | 1.000(reference) | 1.000(reference) | |
352 | 26 | 1.856(0.747–4.613) | 1.354(0.533,3.442) | 1.590 (0.598,4.223) | |
76 | 13 | 4.864(1.762–13.428) | 3.544(1.248,10.069) | 2.867(0.948,8.668) | |
Q4(7[≥ 7]) | 28 | 7 | 8.106(2.452–26.796) | 7.652(2.193,26.707) | 7.522(1.909,29.639) |
P for trend | 0.000 | 0.000 | 0.001 | ||
Increase per day | 1.462(1.233–1.733) | 1.461(1.209–1.766) | 1.404(1.148,1.717) | ||
Superficial|| | |||||
144 | 3 | 1.000(reference) | 1.000(reference) | 1.000(reference) | |
352 | 3 | 0.408(0.081,2.054) | 0.267(0.050,1.424) | 0.281(0.045,1.770) | |
76 | 6 | 4.173(1.002,17.373) | 2.818(0.646,12.296) | 2.474(0.481,12.725) | |
Q4(7[≥ 7]) | 28 | 1 | 1.797(0.176,18.368) | 1.332(0.127,13.929) | 1.394(0.111,17.513) |
P for trend | 0.020 | 0.030 | 0.062 | ||
Increase per day | 1.276(0.922–1.765) | 1.296(0.903–1.861) | 1.242(0.835,1.848) | ||