From: Assessment of technological level of stem cell research using principal component analysis
Time lag (years) | Residual value (%) | Obsolescence rate (%) |
---|---|---|
0 | 100.0 | 0.0 |
1 | 92.8 | 7.2 |
2 | 86.1 | 13.9 |
3 | 79.9 | 20.1 |
4 | 74.1 | 25.9 |
5 | 68.7 | 31.3 |
6 | 63.8 | 36.2 |
7 | 59.2 | 40.8 |
8 | 54.9 | 45.1 |
9 | 50.9 | 49.1 |
11 | 43.8 | 56.2 |
12 | 40.7 | 59.3 |
13 | 37.7 | 62.3 |
14 | 35.0 | 65.0 |
15 | 32.5 | 67.5 |
16 | 30.1 | 69.9 |
17 | 27.9 | 72.1 |
18 | 25.9 | 74.1 |
19 | 24.1 | 75.9 |
20 | 20.7 | 79.3 |