Table 1

 Characteristics of the patient groups before (12 months before moving), during, and after (12 months after moving back) rebuilding

BeforeDuringAfter
VAP, ventilator associated pneumonia; SMR, standardised mortality ratio.
*According to SAPS II criteria.
†Patients >18 years, first admission only.
Months12812
Admissions (n)411259410
Mean age (years)48.751.749.2
Planned surgery (%)*9.89.213.0
Medical admission (%)*37.138.441.3
Acute surgical admission (%)*53.152.445.7
Mean length of stay (days, median)4.5 (2.2)4.6 (2.2)4.5 (2.0)
Mean ventilator time (days, median)3.7 (1.8)4.0 (1.8)3.9 (1.7)
VAP18.0 %15.8%15.8%
SAPS II score (mean)†43.144.143.7
Intensive care unit mortality, n (%)68/4111 (6.5)50/259 (19.3)84/410 (20.5)
Hospital mortality, n (%)96/411 (23.4)84/259 (32.4)181/410 (28.8)
Hospital mortality differences, % (95% CI)
    Before v during9% (2 to 16.1)
    After v during3.6% (−3.5 to 10.8)
SMR (95% CI)0.75 (0.60 to 0.90)1.04 (0.83 to 1.28)0.95 (0.77 to 1.13)