TABLE 1.

Characteristics of the cohort

CharacteristicNo. of subjects%
Gender
    Female14777.0
    Male4523.0
Race
    African-American, not Hispanic12163
    Hispanic4322
    Other2815
Age at first visit (yr)
    1210.5
    1473.7
    152814.6
    164422.9
    174925.5
    186332.8
No. of visits (females) by agea:
    1210.2
    1320.3
    1471.2
    15355.9
    167412.5
    1712621.4
    1816427.8
    1910818.3
    20528.9
    21183.1
    2230.5
        Total590100
No. of visits (males) by agea:
    1442.1
    1594.8
    16189.5
    173418.0
    185529.1
    194121.7
    20189.5
    2184.2
    2221.1
        Total189100
Total192100
  • a Ages are given in years.