The levobupivacaine group reported less pain ( p < 0.001 ) than controls in the postanesthesia care unit ( 1.6 1.3 versus 6.7 1.8 ) and on the ward at 24 ( 0.8 0.9 versus 4.2 1.9 ) and 48 ( 0.4 0.7 versus 3.3 2.3 ) hours .