| Value |
Category |
| 0 |
sin información en cuestionario |
| 1 |
a tiempo |
| 2 |
prematuro |
| 3 |
más de 9 meses |
| 9 |
no sabe |
| Sysmiss |
|
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.