Association between alactic base excess on mortality in sepsis patients: a retrospective observational study

Table 3 Threshold effect analysis of ABE on 30-day and 90-day ICU all-cause mortality

Outcomes		effect size (95% confidence interval)	P
30-day all-cause mortality	Model 1 Fitting model by standard Cox regression	0.998 (0.992–1.005)	0.668
	Model 2 Fitting model by two-piecewise Cox regression
	Inflection point = 2.5
	< 2.5	0.975 (0.966–9.983)	< 0.001
	> 2.5	1.047 (1.033–1.061)	< 0.001
	P for likelihood ratio test		< 0.001
30-day all-cause mortality	Model 1 Fitting model by standard Cox regression	1.002 (0.996–1.008)	0.492
	Model 2 Fitting model by two-piecewise Cox regression
	Inflection point = 2.2
	< 2.2	0.976 (0.968–9.985)	< 0.001
	> 2.2	1.048 (1.036–1.060)	< 0.001
	P for likelihood ratio test		< 0.001

ISSN: 2052-0492