Table 4 Statistical comparison between the proposed ISE method and reported method for the determination of ALO⁺, SAX⁺ and VIL⁺ in pharmaceutical dosage forms

ALO⁺

% Mean recovery

98.3

100.1

SD

1.56

1.78

Variance

2.43

3.17

n

6

6

T-test (2.36)^a

1.86

F-test (5.05)^a

1.14

Published method [18]

SAX⁺

% Mean recovery

98.8

100.4

SD

1.23

1.46

Variance

1.51

2.13

n

6

6

T-test (2.36)^a

2.05

F-test (5.05)^a

1.19

Published method [26]

VIL⁺

% Mean recovery

97.8

99.4

SD

0.98

1.35

Variance

0.96

1.82

n

6

6

T-test (2.36)^a

2.35

F-test (5.05)^a

1.38