TABLE 2.

Promethazine results.

Promethazine		Mean	Standard deviation	Standard error	95% confidence interval
Frequency (Hz)	Control (n = 3)	0.8867	0.34616	0.11539	N/A
	Therapeutic (n = 3)	0.85	0.33117	0.11039	0.972
	Supratherapeutic (n = 3)	0.6922	0.35231	0.11744	0.464
	Total	0.8096	0.34088	0.0656	N/A
Amplitude (mm)	Control (n = 3)	0.1244	0.05388	0.01796	N/A
	Therapeutic (n = 3)	0.0889	0.0348	0.0116	0.194
	Supratherapeutic (n = 3)	0.0889	0.0348	0.0116	0.194
	Total	0.1007	0.04393	0.00846	N/A

95% confidence interval is obtained when compared with internal control.