the methicillin group had a statistically significant higher rate of urinary tract infection ( cephalothin group , 3 cases ; emthicillin group , 22 cases , p less than 0.05 ) , pneumonia ( cephalothin group , no cases ; methicillin group , 9 cases ; p less than 0.01 ) , and episodes of sepsis and prosthetic valve endocarditis ( cephalothin group , no cases ; methicillin group , 11 cases , p less than 0.001 ) .
C0042029
of urinary tract infection
C0007735
cephalothin