... unaware of the randomisation and based by stable vital signs for at least 30 min, VAS pain score of less than 40, lack of surgical complication, absence of opioid related side effects (nausea and ... pain scores of 30 mm and a standard deviation of 15, with a power of 0.8, a P value of 0.05 was considered to be significant. Data were analyzed using Jandel Sigmastat statistical software (San ... a VAS of < 40, the incidence of nausea and Int. J. Med. Sci. 2006, 3 12vomiting and sedation score (0=awake, 1=mild, 2=sleepy but awakable, and 3 = very sleepy) and the length of stay...