Table 3. Comparison of intensity of vomiting from the first day to the fourth day of acupressure in two groups under study.

Vomiting intensity after pressuring	Intervention (n = 40)a	Placebo (n = 40)	P Value
1st day	1 (2-0)	1 (2-1)	0.012
2st day	0 (1-0)	1 (2-0.25)	0.003
3st day	0 (1-0)	1 (2-0)	0.001
4st day	0 (0.75-0)	1 (2-0)	< 0.001

^aValues are given median (IQR).By the mann-whitney U test