Table 2 Associations between the Ln (PIV) and all-cause mortality in SA-AKI patients according to different models.

From: Association of PIV value with early mortality in ICU patients with sepsis-associated acute kidney injury from the MIMIC IV database

ln (PIV)

Model1

HR (95% CI)

P value

Model2

HR (95% CI)

P value

Model3

HR (95% CI)

P value

Model4

HR (95% CI)

P value

28-day mortality

1.141 (1.088,1.196)

< 0.0001

1.125 (1.073,1.180)

< 0.0001

1.088(1.041,1.138)

< 0.0001

1.057 (1.009,1.106)

0.019

ln (PIV) ≤ 6.72

0.872(0.804,0.946)

0.001

0.868(0.800,0.941)

0.001

0.931(0.851,1.019)

0.119

0.921(0.840,1.011)

0.083

ln (PIV) > 6.72

1.231(1.117,1.356)

< 0.0001

1.228(1.113,1.354)

< 0.0001

1.123(1.019,1.238)

0.020

1.089(1.035,1.204)

0.035

90-day mortality

1.157 (1.109,1.206)

< 0.0001

1.140 (1.093,1.189)

< 0.0001

1.108 (1.064,1.153)

< 0.0001

1.075 (1.032,1.120)

< 0.0001

ln (PIV) ≤ 6.72

0.875(0.813,0.942)

< 0.0001

0.870(0.809,0.936)

< 0.0001

0.936(0.865,1.013)

0.101

0.930(0.858,1.008)

0.078

ln (PIV) > 6.72

1.279(1.175,1.392)

< 0.0001

1.273(1.169,1.387)

< 0.0001

1.170(1.074,1.273)

< 0.0001

1.140(1.044,1.245)

0.003

  1. HR, hazard ratio; CI, confidence interval; model 1: unadjusted model. model 2: adjusted for age, sex, ethnicity, and weight. model 3: adjusted for variables included in model 2 + cerebrovascular disease, SBP, heart rate, respiratory rate, temperature, SpO2, the Charlson comorbidity index, the SOFA score, the SAPSII score, septic shock, invasive ventilation and RRT. model 4: adjusted for variables included in model 3 + white blood cell count, haemoglobin, anion gap, calcium, blood urea nitrogen, potassium, creatinine, prothrombin time, glucose and albumin.
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