Over the 2-hour poststudy medication administration period , the SPIDs were higher ( greater pain relief ) for the ketamine study groups than the control group ( standard care 4.0 , interquartile range [ IQR ] = 1.8 to 6.5 ; group 1 7.0 , IQR = 4.3 to 10.8 ; and group 2 7.8 , IQR = 4.8 to 12.8 ; p < 0.02 ) .