Fig. 2
From: The use of clonidine in elderly patients with delirium; pharmacokinetics and hemodynamic responses
Scatterplot of clonidine concentrations and drop in SBP from baseline to day 2. There was no significant correlation between the clonidine concentrations and the level of drop of SBP from baseline to the morning at day 2. Pearson coefficient 0.271, p = 0.448