| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Currently and regularly implemented | 238 |
76.8%
|
| 2 | 2. Still implemented,but not routine | 71 |
22.9%
|
| 3 | 3. Conducted once but no longer implemented | 1 |
0.3%
|
| 4 | 4. Never conducted | 0 |
0%
|
| 9 | 9. Missing | 0 |
0%
|