Implementation and evaluation of the SPRINT protocol for tight glycaemic control in critically ill patients: a clinical practice change

Table 3 Significance of mortality difference between SPRINT and retrospective cohorts grouped by length of intensive care unit stay

	Intensive care unit mortality
	Retrospective	SPRINT	Percentage change (relative)	P value
LOS ≥ 1 day	18.6%	16.8%	-10%	0.523
LOS ≥ 2 days	20.7%	17.9%	-14%	0.403
LOS ≥ 3 days	22.0%	16.9%	-23%	0.177
LOS ≥ 4 days	22.7%	16.6%	-27%	0.130
LOS ≥ 5 days	21.1%	13.9%	-34%	0.087
	Hospital mortality
	Retrospective	SPRINT	Percentage change (relative)	P value
LOS ≥ 1 day	27.4%	24.9%	-9%	0.457
LOS ≥ 2 days	31.6%	26.3%	-17%	0.170
LOS ≥ 3 days	34.1%	25.4%	-26%	0.045
LOS ≥ 4 days	34.3%	23.5%	-32%	0.020
LOS ≥ 5 days	31.9%	20.6%	-35%	0.019

The P values test the median mortality result using the chi-square contingency table test. LOS, length of stay; SPRINT, Specialised Relative Insulin Nutrition Tables.