Table 4.
Intrinsic and extrinsic risk factors for Hospital Acquired Infection: univariate and multi-variate analysis (logistic regression)
| Infected patients (%) |
Univariate analysis |
Multivariate analysis |
|||||
|---|---|---|---|---|---|---|---|
| OR* | 95% CI | pvalue | OR* | 95% CI | pvalue | ||
|
Age (years) |
|
|
|
|
|
|
|
| ≤ 15 |
8.5 |
1.07 |
0.6-1.9 |
0.815 |
1.03 |
0.47-2.28 |
0.939 |
| 16 - 40 |
9.6 |
1.22 |
0.7-2.1 |
0.450 |
1.24 |
0.67-2.57 |
0.65 |
| 41 - 60 |
8.0 |
1 |
|
|
1 |
|
|
| > 60 |
15.1 |
2.05 |
1.2-3.6 |
0.012 |
2.71 |
1.21-4.95 |
0.006 |
|
Gender |
|
|
|
|
|
|
|
| Female |
9.3 |
1 |
|
|
|
|
|
| Male |
10.1 |
1.09 |
0.7-1.6 |
0.66 |
|
|
|
|
Length of hospital stay (days) |
|
|
|
|
|
|
|
| ≤ 5 |
3.5 |
1 |
|
|
1 |
|
|
| 6 - 10 |
9.5 |
2.87 |
1.4-5.7 |
0.003 |
3.79 |
1.68- 8.93 |
0.001 |
| 11 - 20 |
11 |
3.40 |
1.7-6.8 |
0.01 |
4.40 |
1.83-10.61 |
0.001 |
| > 20 |
16.1 |
5.26 |
2.7-10.1 |
<0.001 |
9.6 |
3.63-18.51 |
<0.001 |
|
Provenance |
|
|
|
|
|
|
|
| Home |
8.5 |
1 |
|
|
1 |
|
|
| Hospital |
1.1 |
1.77 |
1.2-2.7 |
0.07 |
1.45 |
0.84-2.50 |
0.18 |
|
MacCabe index |
|
|
|
|
|
|
|
| Non fatal disease |
6 .3 |
1 |
|
|
1 |
|
|
| Ultimately fatal disease |
14.5 |
2.5 |
1.7-3.8 |
<0.001 |
2.01 |
1.21-3.36 |
0.007 |
| Rapidly fatal disease |
20.3 |
3.8 |
1.9-7.6 |
<0.001 |
2.50 |
0.99-6.27 |
0.051 |
|
Immune deficiency |
|
|
|
|
|
|
|
| No |
10 |
1 |
|
|
|
|
|
| Yes |
8.2 |
0.80 |
0.46-1.40 |
0.44 |
|
|
|
|
Diabetes |
|
|
|
|
|
|
|
| No |
6.7 |
1 |
|
|
1 |
|
|
| Yes |
17.4 |
1.57 |
0.86-2.85 |
0.14 |
0.98 |
0.44-2.14 |
0.95 |
|
Surgery |
|
|
|
|
|
|
|
| No |
6.9 |
1 |
|
|
1 |
|
|
| Yes |
20.8 |
3.55 |
2.37-5.29 |
<0.001 |
1.06 |
0.61-1.85 |
0.83 |
|
Intravascular catheter |
|
|
|
|
|
|
|
| No |
6.3 |
1 |
|
|
1 |
|
|
| Yes |
21.0 |
3.95 |
2.67-5.86 |
<0.001 |
1.75 |
1.0-3.1 |
0.048 |
|
Urinary catheter |
|
|
|
|
|
|
|
| No |
5.5 |
1 |
|
|
1 |
|
|
| Yes |
50 |
17.32 |
11.03-27.2 |
<0.001 |
9.84 |
5.16-17.55 |
<0.001 |
|
Mechanical ventilation |
|
|
|
|
|
|
|
| No |
9 |
1 |
|
|
1 |
|
|
| Yes |
71.4 |
25.35 |
7.82-82.2 |
<0.001 |
3.43 |
0.70-17.00 |
0.131 |
|
Antimicrobials |
|
|
|
|
|
|
|
| No |
4.4 |
|
|
|
1 |
|
|
| Yes | 20.7 | 5.72 | 3.76-8.78 | <0.001 | 5.69 | 3.37-9.61 | <0.001 |
* Odds Ratio.