Table 3.

Multivariable Cox proportional hazard regression analysis associated with 28 - and 90-day mortality.

	28-day mortality			90-day mortality
MAP	HR	95% CI	p Value	HR	95% CI	p Value
Quartile 1	Reference	Reference		Reference	Reference
Quartile 2	0.72	0.59–0.89	0.002	0.73	0.60–0.89	0.002
Quartile 3	0.69	0.56–0.85	<0.001	0.71	0.58–0.86	<0.001
Quartile 4	0.51	0.41–0.64	<0.001	0.56	0.45–0.68	<0.001

Quartile 1: MAP < 67.3 mmHg; Quartile 2: 67.3 ≤ MAP < 76.7 mmHg; Quartile 3: 76.7 ≤ MAP < 86.3 mmHg; Quartile 4: MAP ≥ 86.3 mmHg.

MAP: Mean arterial pressure; HR: hazard ratio; CI = confident interval.

Hypertension, cause of continuous renal replacement therapy, Charlson comorbidity index, cause of acute kidney injury, and phosphate were adjusted in model for 28-day mortality.

Hypertension, Charlson comorbidity index, cause of acute kidney injury, and phosphate were adjusted in model for 90-day mortality.