TABLE 4.

Estimates and 95% confidence intervals for group medians of UAC.

Study group	n	Median	95% CI for median
G1: Healthy control	17	2.1	1.4 to 3.1
G2: CKD	42	54.2	21.6 to 175.0
G3: Acute sick control	30	5.8	2.5 to 8.2
G4: Chronic sick control	13	104.0	40.6 to 624.0

Note: In contrast to box plots in Figure 5, the confidence intervals capture the uncertainty about the mean/median estimate and do not capture the distribution of the values in the population. Nonoverlapping confidence intervals indicate a statistically significant difference between groups. In some cases, there can be statistically significant differences even when the confidence intervals overlap slightly.

Abbreviation: CI, confidence interval.