Table 1.

Characteristics of Maternal and Infant Populations

Birth Weight (g)Maternal Daily Dose of Buprenorphine at Delivery (mg)NAS Severity (Peak NAS Score)Required Treatment for NASDays in HospitalTime to First Peak NAS Score (hr)Tobacco Use during Pregnancy
25251610No8103.5Yes
2772105No765Yes
3745245No616No
31101610No7105Yes
29291213No6104Yes
348748No694.3Yes
30251214Yes9143.3Yes
3515611No1041Yes
31701612Yes*38No
3855248No71Yes
3115168No688.3Yes
3025129No611.3Yes
35301614Yes1336Yes
308084No652Yes
23201611Yes771Yes
34551216Yes*39Yes
28851619Yes11114Yes
2778618Yes1638Yes
28701611No669.3Yes
3415129No686No
42951610No629.3No
2400166No558Yes
309539Yes7120Yes
Mean (SD)3148 (471.0)13.3 (5.4)10.4 (3.9)7.7 (2.7)66.2 (38.4)
  • * Infants were transferred to another hospital; these infants are not included in mean number (SD) of days in hospital.

  • NAS, neonatal abstinence syndrome.