| Value | Category | Cases | |
|---|---|---|---|
| -88 | -88.Not applicable | 0 |
0%
|
| -77 | -77.No data available | 0 |
0%
|
| -66 | -66.Refuse to answer | 0 |
0%
|
| -33 | -33.Don’t know | 0 |
0%
|
| 1 | 1.Monthly | 31 |
12.9%
|
| 2 | 2.Quarterly | 154 |
64.2%
|
| 3 | 3.Twice a year | 15 |
6.3%
|
| 4 | 4.Once a year | 7 |
2.9%
|
| 5 | 5.Irregularly | 33 |
13.8%
|
| 6 | 6.Others, specify | 0 |
0%
|
| Sysmiss | 1 |