Table 1.

Participant Characteristics (N=10)

Characteristics	Methadone- treated neonates (N=10)
Sex (% male)	70
Race (% White)	100
Prenatal exposure (%)
Buprenorphine maintenance	60
Methadone maintenance	30
Not stated in medical record	10
Estimated gestational age at birth (weeks)	39.6 ± 1.3
Birthweight (g)	3235.7 ± 391.2
Apgar scores at birth
1 minute	7.9 ± 1.0
5 minutes	9.0 ± 0.0
Age at time of pupil study participation (days)	4.0 ± 1.6
Methadone dose (mg/kg) every 12 hours	0.44 ± .05

Note: Values are mean (± SD) unless otherwise indicated.