Table 1. Experimental design in coded factors and responses
| Case | Design point | Run order | X1 | X2 | X3 | RDIF (%, from USPHS code)* | P=RDIF/100 | L=logit(P)=log(P/[1–P]) |
| 1 | 1 | 2 | –1 | –1 | –1 | 30.12 | 0.3012 | –0.84159 |
| 2 | 2 | 5 | –1 | –1 | 1 | 36.36 | 0.3636 | –0.55977 |
| 3 | 3 | 20 | –1 | 1 | –1 | 48.69 | 0.4869 | –0.05241 |
| 4 | 4 | 10 | –1 | 1 | 1 | 59.62 | 0.5962 | 0.38966 |
| 5 | 5 | 11 | 1 | –1 | –1 | 0.73 | 0.0073 | –4.91255 |
| 6 | 6 | 15 | 1 | –1 | 1 | 1.96 | 0.0196 | –3.91243 |
| 7 | 7 | 13 | 1 | 1 | –1 | 4.09 | 0.0409 | –3.15487 |
| 8 | 8 | 17 | 1 | 1 | 1 | 8.55 | 0.0855 | –2.36986 |
| 9 | 9 | 1 | –1 | 0 | 0 | 38.91 | 0.3891 | –0.45110 |
| 10 | 10 | 7 | 1 | 0 | 0 | 2.63 | 0.0263 | –3.61153 |
| 11 | 11 | 4 | 0 | –1 | 0 | 3.55 | 0.0355 | –3.30208 |
| 12 | 12 | 16 | 0 | 1 | 0 | 15.73 | 0.1573 | –1.67846 |
| 13 | 13 | 18 | 0 | 0 | –1 | 5.65 | 0.0565 | –2.81536 |
| 14 | 14 | 6 | 0 | 0 | 1 | 7.84 | 0.0784 | –2.46429 |
| 15 | 15 | 3 | 0 | 0 | 0 | 8.55 | 0.0855 | –2.36986 |
| 16 | 15 | 8 | 0 | 0 | 0 | 6.99 | 0.0699 | –2.58823 |
| 17 | 15 | 9 | 0 | 0 | 0 | 6.56 | 0.0656 | –2.65633 |
| 18 | 15 | 12 | 0 | 0 | 0 | 6.78 | 0.0678 | –2.62099 |
| 19 | 15 | 14 | 0 | 0 | 0 | 5.88 | 0.0588 | –2.77301 |
| 20 | 15 | 19 | 0 | 0 | 0 | 6.98 | 0.0698 | –2.58977 |
X1=–1, 0, 1 stands for homogenizer pressure=10, 20, 30 MPa; X2=–1, 0, 1, storage temperature=10°C, 15°C, 20°C; and X3=–1, 0, 1, storage period=10, 15, 20 days.
The lower RDIF is, the better homogenization efficiency is.
USPHS, United States Public Health Service.