More patients in group 1 than in group 2 had postoperative moderate-to-severe pain ( 165 [ 33.0 % ] vs 115 [ 23.0 % ] ; P = 0.001 ) and needed additional postoperative analgesia ( 100 [ 20.0 % ] vs 50 [ 10.0 % ] ; P < 0.001 ) .