Drug dosage

N

Mean

Std. Deviation

Study group

20

8.00

3.71

Control group

13

9.81

4.79

Mann-Whitney U

100.500

Z

-1.092

Wilcoxon W

310.500

Asymp. Sig. (2-tailed)

0.275

Exact Sig. [2^*(1-tailed Sig.)]

0.281