Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparing the frequency of positive response to drug in two groups
| Response to drug | Sodium valproate (%) | Phenobarbital (%) |
|---|---|---|
| Group | ||
| Positive | 18 (45) | 32 (80) |
| Negative | 22 (55) | 8 (20) |
| Total | 40 (100) | 40 (100) |
| Chi-square test | X2= 10.45 df= 1 P-value= 0.001 | |
