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Least square (LS) means (± standard error) of the total neonatal abstinence syndrome (NAS) score in methadone- and buprenorphine-exposed neonates from birth to 240 hours postnatal (PN). The figure illustrates significant main effects of medication condition and of time (Ps < 0.05). The numerical range after the title indicates the minimum and maximum score for the total score. The y-axis is presented on a smaller scale to allow for more detailed inspection of the data
