Novel HPLC Analysis of Hydrocortisone in Conventional and Controlled-Release Pharmaceutical Preparations

Table 9

Statistical comparison between the developed method and the USP method.

USP method (column B) versus developed method (column A)
-test
value	0.9742
value summary	Ns
Significantly different? ()	No
One- or two-tailed value?	Two-tailed
Mean ± SEM of column A	97.63 ± 1.415 = 15
Mean ± SEM of column B	97.56 ± 1.440 = 15
Difference between means	−0.06600 ± 2.019
95% confidence interval	−4.202 to 4.070