negative correlation: a correlation in which large values of one variable are associated with small values of the other; the correlation coefficient is between 0 and -1
correlation: a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other
amiodarone: an antiarrhythmic drug (trade name Cordarone) that has potentially fatal side effects and is used to control serious heart rhythm problems only when safer agents have been ineffective