Table 5 Statistical comparison for the results obtained by the proposed HPLC method and the official method [1]
Parameter | Proposed method | Official method [1] | ||
|---|---|---|---|---|
PHE | IBU | PHE | IBU | |
Mean of recoveriesa | 99.44 | 99.78 | 100.02 | 99.57 |
SD | 1.38 | 1.27 | 0.85 | 1.09 |
Variance | 1.92 | 0.13 | 0.73 | 1.19 |
N | 5 | 5 | 5 | 5 |
Student’s t-test (2.30)b | 0.78 | 0.24 | – | |
F-test (6.38)b | 2.60 | 0.11 | – | |