Linear regressions (left; dotted line: Line of equality; r: Pearson correlation coefficient) and Bland-Altman plots (right; dashed lines: Limits of agreement; dotted lines: Confidence intervals) for pairs (n = 335) of invasively (IBP) and non-invasively measured blood pressure (NBP) readings in the first four weeks of life obtained from preterm infants born below 28 weeks of gestation.

Linear regressions (left; dotted line: Line of equality; r: Pearson correlation coefficient) and Bland-Altman plots (right; dashed lines: Limits of agreement; dotted lines: Confidence intervals) for pairs (n = 335) of invasively (IBP) and non-invasively measured blood pressure (NBP) readings in the first four weeks of life obtained from preterm infants born below 28 weeks of gestation.