Table 5: Results of analysis of tablets by the proposed methods and statistical comparison with the reference method.

Tablets analysedLabel claim, mg/tabletFound* (percent of label claim ± SD)
Reference methodProposed methods
Method AMethod BMethod C

Asthafen1100.8 ± 0.91101.4 ± 0.89102.8 ± 1.91102.1 ± 1.75

Ketasma 1102.3 ± 1.02100.6 ± 0.98102.8 ± 1.36101.3 ± 0.88

Mean value of five determinations;
Tabulated value at the 95% confidence level is 2.78.
Tabulated value at the 95% confidence level is 6.39.