TABLE 1

Clinical and Demographic Data for the Exposed and the Nonexposed Group

Exposed Group, n = 162Nonexposed Group, n = 146
Gestational age, wk; median (range)38.5 (35.0–42.7)38.7 (35.7–42.1)
Birth weight, g; median (range)3470 (2550–4640)3356 (1930–4680)
Gender, n (%)
 Female77 (48)65 (45)
 Male85 (52)81 (55)
Apgar score ≤7 at 5 min, n (%)1 (0.5)0 (0)
Ethnicity, n (%)
 Caucasian 142 (88)135 (92)a
 Non-Caucasian20 (12)9 (6)
Parental education groups, n (%)b
 Primary school57 (35)55 (38)
 High school/college55 (34)43 (29)
 University education48 (30)46 (32)
TSB peak, mg/dL; median (range)26 (25–35)
TSB peak, d; median (range)4 (1–17)
Early acute bilirubin encephalopathy, n (%)89 (55)
  • a Information on ethnicity from questionnaire was missing for 2 children.

  • b Information on parental education group was missing for 2 exposed and 2 nonexposed children.