Table 2 Characteristics of 19,468 patients with and without hospital-associated infections (HAIs) treated at Haukeland University Hospital, 2004-2011
HAIs | Prevalence of HAIs | ||||
|---|---|---|---|---|---|
All patients | No | Yes | |||
Characteristics | n (%) | n (%) | n (%) | P valuea | % |
All | 19468 (100) | 17806 (100.0) | 1662 (100.0) | 8.5 | |
Gender | <0.001 | ||||
Women | 10140 (52.1) | 9378 (52.7) | 762 (45.8) | 7.5 | |
Men | 9328 (47.9) | 8428 (47.3) | 900 (54.2) | 9.7 | |
Age (years) | <0.001 | ||||
0-14 | 2131 (10.9) | 2076 (11.7) | 55 (3.3) | 2.6 | |
15-34 | 2447 (12.6) | 2331 (13.1) | 116 (7.0) | 4.7 | |
35-54 | 3345 (17.2) | 3084 (17.3) | 261 (15.7) | 7.8 | |
55-74 | 6113 (31.4) | 5498 (30.9) | 615 (37.0) | 10.1 | |
>74 | 5432 (27.9) | 4817 (27.1) | 615 (37.0) | 11.3 | |
Time period | 0.005 | ||||
Jan-Mar | 4924 (25.3) | 4512 (25.3) | 412 (24.8) | 8.4 | |
Apr-Jun | 5010 (25.7) | 4618 (25.9) | 392 (23.6) | 7.8 | |
Jul-Sept | 4786 (24.6) | 4391 (24.7) | 395 (23.8) | 8.3 | |
Oct-Dec | 4748 (24.4) | 4285 (24.1) | 463 (27.9) | 9.8 | |
Admission type | <0.001 | ||||
Acute | 12080 (62.3) | 10918 (61.6) | 1162 (70.2) | 9.6 | |
Elective | 7304 (37.7) | 6810 (38.4) | 494 (29.8) | 6.8 | |
Surgery | <0.001 | ||||
No | 12543 (64.4) | 11920 (66.9) | 623 (37.5) | 5.0 | |
Yes | 6925 (35.6) | 5886 (33.1) | 1039 (62.5) | 15.0 | |
Urinary tract | |||||
catheter | <0.001 | ||||
No | 16216 (83.3) | 15162 (85.2) | 1054 (63.4) | 6.5 | |
Yes, permanent | 2682 (13.8) | 2150 (12.1) | 532 (32.0) | 19.8 | |
Yes, intermittent | 570 (2.9) | 494 (2.8) | 76 (4.6) | 13.3 | |
Use of antibiotics | <0.001 | ||||
No | 14372 (73.8) | 14241 (80.0) | 131 (7.9) | 0.9 | |
Yes | 5096 (26.2) | 3565 (20.0) | 1531 (92.1) | 30.0 | |
Pre-prevalence period (days)b | <0.001 | ||||
2 | 5182 (26.6) | 5112 (28.7) | 70 (4.2) | 1.4 | |
3-5 | 4537 (23.3) | 4339 (24.4) | 198 (11.9) | 4.4 | |
6-9 | 4133 (21.2) | 3756 (21.1) | 377 (22.7) | 9.1 | |
10-15 | 2295 (11.8) | 1938 (10.9) | 357 (21.5) | 15.6 | |
16-30 | 2258 (11.6) | 1814 (10.2) | 444 (26.7) | 19.7 | |
>30 | 1063 (5.5) | 847 (4.8) | 216 (13.0) | 20.3 | |
Charlson comorbidity indexc | <0.001 | ||||
0 | 9758 (50.1) | 9202 (51.7) | 556 (33.5) | 5.7 | |
1 | 3464 (17.8) | 3125 (17.6) | 339 (20.4) | 9.8 | |
2 | 3234 (16.6) | 2827 (15.9) | 407 (24.5) | 12.6 | |
3 | 1118 (5.7) | 951 (5.3) | 167 (10.0) | 14.9 | |
4 | 420 (2.2) | 377 (2.1) | 43 (2.6) | 10.2 | |
>4 | 1380 (7.1) | 1236 (6.9) | 144 (8.7) | 10.4 | |