TABLE 1.

Characteristics of Cases and Controls

CharacteristicCases (N = 252) N (%)Controls (N = 768) N (%)
Gender
 Male143 (56.8)433 (56.4)
 Female109 (43.3)335 (43.6)
Year of birth
 1988–1990126 (50.0)387 (50.4)
 1991–199390 (35.7)273 (35.6)
 1994–199736 (14.3)108 (14.1)
Age (incidence/index)
 10–28 mo65 (25.8)191 (24.9)
 29–47 mo64 (25.4)200 (26.0)
 48–72 mo62 (24.6)185 (24.1)
 73–122 mo61 (24.2)192 (25.0)
Race/ethnicity
 Black20 (7.9)72 (9.4)
 Asian/Pacific Islander9 (3.6)68 (8.9)
 Hispanic49 (19.4)156 (20.3)
 White141 (56.0)307 (40.0)
 Other7 (2.8)35 (4.6)
 Unknown26 (10.3)130 (16.9)
Family history of diabetes (possible type 1)38 (21.1)8 (4.0)
Breastfed(≥6 mo)56 (22.2)170 (22.1)