Table 1 Description of study population
From: Multiple time scales in modeling the incidence of infections acquired in intensive care units
General | Frequency (%) |
Number of admissions | 84843 |
Number of admission-days | 693180 |
Number of ICUs | 81 |
Number of MRSA infections during ICU stay | 469 |
Number of deaths without MRSA infections during ICU stay | 11131 |
Number of discharges without MRSA infections from ICU | 72701 |
Number of administrative censored admissions | 542 |
Overall risk of MRSA infections (censored excluded) | 0.56 % |
Overall rate of MRSA infections | 0.068 % |
Calendar year of admission | Â |
2006 (reference) | 11301 (13.32) |
2007 | 14862 (17.52) |
2008 | 17654 (20.81) |
2009 | 19361 (22.82) |
2010+ | 21665 (25.54) |
Parient level covariates | Â |
APACHE II score 0-10 (reference) | 30291 (35.70) |
APACHE II score 11-20 | 35428 (41.76) |
APACHE II score 21-30 | 15187 (17.90) |
APACHE II score >30 | 3937 (4.64) |
Age (years) 0-40 | 42232 (49.78) |
Age (years) 40-60 | 10227 (12.05) |
Age (years) 61-80 (reference) | 22989 (27.10) |
Age (years)>80 | 9395 (11.07) |
Days in hospital before ICU admission: | Â |
0-3 (reference) | 67301 (79.32) |
4-6 | 4616 (5.44) |
6-10 | 3950 (4.66) |
>10 | 8976 (10.58) |
Type of diagnosis: | Â |
Cardiovascular (reference) | 41990 (49.49) |
Respiratory | 11816 (13.93) |
Gastrointestinal | 10958 (12.92) |
Central nervous system | 14473 (17.06) |
Other diagnoses | 5606 (6.61) |
Antibiotic treatment 48 h before and/or after ICU admission | 18052 (21.28) |
Gender (male) | 55308 (65.19) |
Origin: community (reference) | 41640 (49.08) |
Origin: hospital/ICU | 43203 (50.92) |
Trauma | 7167 (8.45) |