Figure 2

Serum bicarbonate correlates well with severity of clinical dehydration score (p=0.0027, r - 0.355, R-squared 0.1262). A serum bicarbonate of 21 mmol/L has a sensitivity of 90% and a specificity of 62% for dehydration in children and is most closely associated with a score of 2 or greater (dotted line). Confidence intervals are represented with dashed line.