Table 1 Demographic characteristics of included subjects.
Sex | Â |
   Male | 51% |
Race | Â |
   White | 50% |
   Black | 33% |
   Asian | 3% |
   Other | 14% |
Ethnicity | Â |
   Hispanic | 3% |
Median number HC measurements | 5 |
Percent with > 1 HC measurement | 85% |
Median age first HC measurement (months) | 1.2 |
Median age last HC measurement (months) | 24.1 |