Table 3. Summary of Outcome Data in Studies Included for the Meta-analysis

Percent values were counted as follows so as not to overestimate the efficacy of clonidine: 4% of 22 = 1/22; 38% of 21 = 8/21; 40% of 14 = 6/14; and >70% of 15 = 11.

*= died within 6 months after surgery;

†= died after postoperative day 7.

CABG = coronary artery bypass grafting; CPB = cardiopulmonary bypass; POD = postoperative day.