Table 3
Ephedrine data

Variable	Fast group (n=20)	Slow group (n=20)
Number of use	13 (65%)	15 (75%)
Total amount (mg)	19.77±10.28	17.87±8.13
First injection time (min)	5.96±1.63*	7.17±3.26*

There are significant difference between two groups in the first ephedrine injection time but no differences in the number of use and amount of ephedrine. Values are presented as mean±SD. *P<0.05 between two groups.