| Value |
Category |
| 1 |
lower abdomen |
| 2 |
upper abdomen |
| 3 |
central abdomen (around umbilicus) |
| 4 |
all over the abdomen |
| 8 |
don't know |
| 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.