Demographic data of the study population*
| Age | n=1632 |
| Overall, median (IQR) | 1.3 years (9 months to 4 years) |
| Birth to 6 months | 243 (14.9) |
| 6 to 18 months | 695 (42.6) |
| 18 months to 5 years | 348 (21.3) |
| Over 5 years | 346 (21.2) |
| Gender | |
| Male | 994 (60.9) |
| Female | 638 (39.1) |
*Except as noted, values are counts (%).