Table II.

Clinical characteristics (n=76)

At birth	Median (range) or number (percent)
Gestational age, weeks	39 (37–41)
Weight, g	3,037 (2,400–3,894)
Length, cm	49.6 (45.0–53.0)
Head circumference	33.0 (29.8–36.0)
Male	39 (51)
Apgar score, 1 min / 5 min	8 (5–9) / 9 (7–10)
O blood type of mother	35 (46)
At the time of diagnosis
Diagnostic age [number of patients (%)]
within 24 hours after birth	6 (8)
24 to 48 hours after birth	70 (92)
Weight, g	2,877 (2,236–3,754)
Weight loss from birth weight, %	−5.0 (−7.8–+1.76)
Excessive weight loss	36 (47)
Artificial milk feeding	76 (100)
Infusion	0 (0)
Any drugs	0 (0)
Examination data
Total serum bilirubin, mg/dL	12.6 (8.2–17.4)
Unbound bilirubin, μg/dL	0.44 (0.14–0.69)
Albumin, g/dL	3.9 (3.3–4.4)
bilirubin/albumin molar ratio	0.30 (0.07–0.53)
Hemoglobin, g/dL	19.2 (10.4–23.2)
Hematocrit, %	55.5 (30.7–68.0)
Treatment
Phototherapy	76 (100)
Standard (single-surface irradiation using fluorescent tubes)	71 (93)
Intensive (double-surface irradiation using fluorescent tubes)	5 (7)
Duration of phototherapy, days	1 (1–4)
Exchange blood transfusion	0 (0)
Infusion therapy	54 (71)