Observation No.  Assay of Desogestrel (%) SET I Assay of Desogestrel (%) SET II
1. 99.3 98.9
2. 99.5 99.4
3. 99.7 98.5
4. 99.3 98.7
5. 99.3 98.6
6. 98.7 99.7
Assay 99.3 99.0
Minimum 98.7 98.5
Maximum 99.7 99.7
% RSD 0.3 0.5
Overall % RSD of results (N = 12) of two different sets 0.4
  Ethinyloestradiol SET I SET II
1. 99.5 100.4
2. 99.2 99.5
3. 99.7 99.3
4. 101.1 101.5
5. 100.6 99.7
6. 101.6 99.9
Assay 100.3 100.1
Minimum 99.2 99.3
Maximum 101.6 101.5
% RSD 0.9 0.8
Overall % RSD of results (N = 12) of two different sets 0.9
Table 5: Comparison between method precision and intermediate precision.