Table 5.

Variables related to the utility of the AASTRE (multivariate analysis)

	Ratio Patients:nurses OR (95% CI)	Ratio Patients: physicians OR (95% CI)	SOFA OR (95% CI)	Patient type OR (95% CI)	Length of stay OR (95% CI)
Mechanical ventilation	2.6 (1.1–6.7)	0.9 (0.7–1.0)	1.4 (1.1–1.7)	1.1 (1.0–1.4)	0.9 (073–1.0)
Haemodynamics	2.9 (1.2–7.4)	0.9 (0.6–1.3)	0.9 (0.7–1.3)	0.9 (0.8–1.2)	0.9 (0.8–1.2)
Renal function/CRRT	0.3 (0.0–1.4)	0.9 (0.6–1.4)	2.0 (1.5–2.5)	1.1 (0.9–1.4)	0.9 (0.8–1.1)
Sedation and analgesia	0.9 (0.2–3.5)	0.9 (0.5–1.3)	1.2 (0.8–1.7)	1.0 (0.8–1.3)	0.9 (0.7–1.1)
Treatment 1	0.5 (0.1–2.7)	1.4 (0.9–2.0)	1.4 (1.1–1.8)	0.9 (0.8–1.1)	0.8 (0.6–0.9)
Treatment 2	1.5 (0.2–11.1)	1.5 (0.9–2.5)	1.1 (0.8–1.7)	0.9 (0.7–1.3)	0.6 (0.4–0.8)
Techniques and tests	1.3 (0.4–3.6)	0.6 (0.4–1.9)	0.9 (0.7–1.2)	0.9 (0.8–1.2)	0.7 (0.5–0.9)
Nutrition	0.5 (0.1–2.5)	1.2 (0.8–1.6)	0.9 (0.8–1.3)	1.1 (0.9–1.3)	0.9 (0.8–1.1)
Nursing care	1.2 (0.5–3.2)	1.1 (0.8–1.4)	1.4 (1.1–1.7)	0.9 (0.8–1.1)	0.9 (0.8–1.2)
Structure	1.0 (0.4–2.5)	1.0 (0.7–1.2)	1.2 (1.0–1.5)	1.1 (0.9–1.3)	0.9 (0.8–1.1)

CRRT continuous renal replacement techniques

Italic text: significant OR