The mean reduction was 55.74.2 % among patients who underwent background therapy with diet alone , 61.62.6 % among those who received 10 mg of atorvastatin , 56.85.3 % among those who received 80 mg of atorvastatin , and 48.55.2 % among those who received a combination of 80 mg of atorvastatin and 10 mg of ezetimibe ( P < 0.001 for all comparisons ) .