Table 4.

Results of exploratory regression analyses for additional results from detrended fluctuation analysis

	Univariate		Bivariatea		Multivariateb
Variable	OR (95 % CI)	p value	OR (95 % CI)	p value	OR (95 % CI)	p value
Long-term fractal exponent	1.3 (1.1–1.6)	0.003	1.3 (1.1–1.6)	0.005	1.3 (1.1–1.6)	0.007
Overall fractal exponent	1.4 (1.1–1.7)	0.003	1.3 (1.1–1.6)	0.005	1.3 (1.1–1.6)	0.007

^aThe bivariate model controlled for mean arterial pressure (MAP)

^bThe multivariate model controlled for MAP, magnitude of vasopressor up-titration, APACHE II, SOFA, age, and sex