The least squares mean reduction from baseline in serum potassium level at week @ or time of first dose titration in patients with mild hyperkalemia was @ ( @ % CI , @-@ @ ) mEq/L for the @ g twice daily starting-dose group , @ ( @ % CI , @-@ @ ) mEq/L for the @ g twice daily starting-dose group , and @ ( @ % CI , @-@ @ ) mEq/L for the @ g twice daily starting-dose group .