Study to Compare the Efficacy and Safety of Pitavastatin and Simvastatin

Inclusion Criteria: * Males and females (18-75 years) * Must have been following a restrictive diet * Diagnosis of primary hypercholesterolemia or combined dyslipidemia Exclusion Criteria: * Homozygous familial hypercholesterolemia or familial hypoalphalipoproteinemia; * Conditions which may cause secondary dyslipidemia. * Uncontrolled diabetes mellitus (by hemoglobin A1c \[HbA1c\] \> 8%) * Abnormal serum creatine kinase (CK) above the pre-specified level * Abnormal pancreatic, liver or renal function * Significant heart disease