Unit-to-unit transfer due to shortage of intensive care beds in Sweden 2015–2019 was associated with a lower risk of death but a longer intensive care stay compared to no transfer: a registry study

Table 3 Risk of death within 90 days after ICU admission

a All transferred patients
Model	Cohort	OR	95% CI	P-value^$	Pseudo R²	Adjusted for
Unadjusted	Transfer due to lack of resources	1.51	1.39–1.64	< 0.001	0.001	–
Model 1	Transfer due to lack of resources	0.77	0.7–0.85	< 0.001	0.371	SAPS 3
Model 2	Transfer due to lack of resources	0.71	0.64–0.78	< 0.001	0.406	SAPS 3, ICU diagnosis
Model 3	Transfer due to lack of resources	0.71	0.65–0.79	< 0.001	0.406	SAPS 3, ICU diagnosis, days in ICU
						Before transfer/discharge or death

b Inter-hospital and intra-hospital transferred patients
Model	Cohort	OR	95% CI	P-value^$	Pseudo R²	Adjusted for
Unadjusted	Inter-hospital transfer due to lack of resources	1.63	1.48–1.79	< 0.001	0.001	–
	Intra-hospital transfer due to lack of resources	1.24	1.05–1.45	0.01
Model 1	Inter-hospital transfer due to lack of resources	0.79	0.71–0.88	< 0.001	0.371	SAPS 3
	Intra-hospital transfer due to lack of resources	0.72	0.59–0.87	< 0.001
Model 2	Inter-hospital transfer due to lack of resources	0.75	0.67–0.84	< 0.001	0.406	SAPS 3, ICU diagnosis
	Intra-hospital transfer due to lack of resources	0.58	0.48–0.7	< 0.001
Model 3	Inter-hospital transfer due to lack of resources	0.76	0.68–0.85	< 0.001	0.406	SAPS 3, ICU diagnosis, days in ICU
	Intra-hospital transfer due to lack of resources	0.59	0.48–0.71	< 0.001		Before transfer/discharge or death

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