| Polymers | Coded levels | Actual levels (%) | Response |
% drug release at 6hrs |
% Swelling index at 8 hrs |
|---|---|---|---|---|---|
| Predicted value | 72.94 | 292.01 | |||
| Observed value | 75.32 | 281.73 | |||
| Hydroxyl ethyl cellulose HHX | 0 | 68.5% | Standard deviation | 3.12 | 8.9698 |
| PMMA | 1 | 15% | Standard error mean | 1.648 | 4.7275 |