The mean age of the patients in both groups was similar ( amlodipine group : 54.9 4.5 years ; losartan group : 54.0 6.9 years ) , with no significant difference in the mean BP [ amlodipine group : 145 14 mmHg ( systolic ) and 84 8 mmHg ( diastolic ) ; losartan group : 153 19 mmHg ( systolic ) and 90 9 mmHg ( diastolic ) ] .