Adverse events were comparable between zirconium cyclosilicate and placebo , although edema was more common in the @-g group ( edema incidence : @/@ -LSB- @ % -RSB- , @/@ -LSB- @ % -RSB- , @/@ -LSB- @ % -RSB- , and @/@ -LSB- @ % -RSB- patients in the placebo , @-g , @-g , and @-g groups ) .