| Value |
Category |
| 100 |
One day |
| 199 |
Day, missing number |
| 201 |
One month |
| 299 |
Month, missing number |
| 301 |
One year |
| 399 |
Year, missing number |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.