| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Currently and regularly implemented | 91 |
29.4%
|
| 2 | 2. Still implemented,but not routine | 23 |
7.4%
|
| 3 | 3. Conducted once but no longer implemented | 76 |
24.5%
|
| 4 | 4. Never conducted | 120 |
38.7%
|
| 9 | 9. Missing | 0 |
0%
|