The main adverse effects of YAZ included intermenstrual bleeding -LSB- @ % ( @/@ ) versus @ % ( @/@ ) -RSB- , menorrhagia -LSB- @ % ( @/@ ) versus @ % ( @/@ ) -RSB- , nausea -LSB- @ % ( @/@ ) versus @ % ( @/@ ) -RSB- and skin rash -LSB- @ % ( @/@ ) versus @ % ( @/@ ) -RSB- .