Fig. 4

Odds ratios and 95% CI for AKI within 7 days associated with CVP in subgroups. Odds ratios (solid line) and 95% CI (gray area) for AKI associated with CVP in (a) all subjects, (b) subgroup with age > 65 years, (c) subgroup with SBP < 110 mmHg, (d) subgroup with use of diuretics, (e) subgroup with sepsis, (f) subgroup with use of ventilation, (g) subgroup with use of vasopressors, (h) subgroup with use of inotropes, (i) subgroup without use of any vasopressors or inotropes, (j) subgroup with CHF, and (k) subgroup in CSRU. The results were calculated using an adjusted restricted cubic spline model with a reference CVP of 5 mmHg (dotted line). CVP, central venous pressure; AKI, acute kidney injury; CSRU, cardiac surgery recovery unit; CHF, congestive heart failure; SBP, systolic blood pressure; CI, confidence interval