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Table 3 Comparison of intraoperative hypotension and acute kidney injury in the single-arm trial versus contemporaneous comparison group

From: AcumenTM hypotension prediction index guidance for prevention and treatment of hypotension in noncardiac surgery: a prospective, single-arm, multicenter trial

 

Contemporaneous

comparison

N = 15,796

Trial

N = 457

Crude modelb

Inverse probability of treatment weighing propensity model

Effect Estimatec

(95% CI)

P-Value

Effect estimatec

(95% CI)

P value

Duration of Hypotension

(MAP < 65)a

15 [5, 39]

9 [3, 20]

− 0.31 (− 0.39 to − 0.22)

< 0.001

− 0.35 (− 0.43 to − 0.27)

< 0.001

Acute kidney injury

1898/12,421 (15.3%)

45/325 (13.8%)

0.93 (0.67 to 1.27)

0.674

0.91 (0.63 to 1.33)

0.637

  1. CI confidence interval: MAP mean arterial blood pressure)
  2. Data is presented as median [quartile 1, quartile 3] in minutes, or n (%) depending on descriptive statistics
  3. aData is only available for 15,749 observations
  4. bAll models are adjusting for time in which blood pressure is measured (i.e., time at risk)
  5. cEffect estimates for hypotension are reported as exponentiated beta coefficients, whereas effect estimates for acute kidney injury are reported as odds ratios