Risk factors for emergency room use and rehospitalization among opioid-exposed newborns in Massachusetts
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Updated: Aug 10, 2026

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Sunah S Hwang1,2, Chia-Ling Liu3, Qi Yu3
1Section of Neonatology, Children's Hospital Colorado, Aurora, Colorado, USA.
Objective:
To determine the risk factors for receipt of emergency room (ER) care and rehospitalization among opioid-exposed newborns in Massachusetts.
Design/Methods:
We analyzed two linked data sets from 2002 to 2010: (a) Massachusetts Pregnancy to Early Life Longitudinal Data System and (b) Massachusetts Bureau of Substance Abuse Services Management Information System. Generalized estimating equations were used to assess the independent association of maternal and infant characteristics with ER use and rehospitalization in the first year of life.
Results:
Four thousand and five hundred and twenty-four maternal-infant dyads affected by OUD were included in the analysis. In adjusted analysis, risk factors for receipt of ER care included Hispanic ethnicity (aOR 1.63 [95% CI 1.30-2.05]), lower education levels (aOR 1.54-1.69 [95% CI 1.12-2.31]), nonprivate insurance (aOR 1.44 [95% CI 1.11-1.86]), and presence of maternal chronic conditions (aOR 1.14 [95% CI 1.01-1.29]). Risk factors for rehospitalization included prematurity (aOR 1.44 [95% CI 1.14-1.82]), low birthweight (aOR 2.02 [95% CI 1.63-2.49]), and nonprivate insurance (aOR 1.58 [95% CI 1.13-2.22]). Prolonged infant birth hospitalization was protective against both ER use (aOR 0.84 [95% CI 0.73-0.96]) and rehospitalization (aOR 0.63 [95% CI 0.53-0.75]).
Conclusions:
Clinical and sociodemographic characteristics are risk factors for receipt of ER care and rehospitalization among opioid-exposed newborns in Massachusetts.
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