Neonatal abstinence syndrome at a glance

Release date: August 2017

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Highlights

Introduction

Figures and tables are provided for the following indicators of neonatal abstinence syndrome for Durham Region

For more detailed, topic-specific reports on substance abuse and misuse, please go to the Health Statistics in Durham Region homepage.

For more information or if you require this information in an accessible format, please contact Durham Health Connection Line at 905-666-6241 or 1-800-841-2729.

Please contact the author to request a PDF copy of this document.

Results

Figure 1: Crude incidence of neonatal abstinence syndrome in Durham Region and Ontario, 2002-2016

Line chart showing the trend

Data table for Figure 1
Year Location Rate per 1000
2002 Durham 1.2
2003 Durham -
2004 Durham 1.7
2005 Durham -
2006 Durham 1.0
2007 Durham 2.0
2008 Durham 1.4
2009 Durham 2.6
2010 Durham 2.5
2011 Durham 3.1
2012 Durham 3.5
2013 Durham 2.8
2014 Durham 4.5
2015 Durham 6.1
2016 Durham 5.0
2002 Ontario 0.9
2003 Ontario 1.0
2004 Ontario 1.4
2005 Ontario 1.4
2006 Ontario 1.7
2007 Ontario 2.1
2008 Ontario 2.3
2009 Ontario 2.9
2010 Ontario 3.9
2011 Ontario 5.1
2012 Ontario 5.3
2013 Ontario 5.6
2014 Ontario 6.3
2015 Ontario 6.1
2016 Ontario 6.5
A dash indicates the data are suppressed
Source: Inpatient Discharges, Ontario Ministry of Health and Long-Term Care, intelliHEALTH ONTARIO
Table 1: Incidence and count of neonatal abstinence syndrome in Durham Region and Ontario, 2002-2016
Statistic Calendar Year
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Durham rate 1.2 - 1.7 - 1.0 2.0 1.4 2.6 2.5 3.1 3.5 2.8 4.5 6.1 5.0
Durham count 7 - 10 - 6 13 9 17 16 20 23 18 29 40 33
Ontario rate 0.9 1.0 1.4 1.4 1.7 2.1 2.3 2.9 3.9 5.1 5.3 5.6 6.3 6.1 6.5
Ontario count 115 131 189 189 238 293 331 410 538 711 735 769 857 829 878
A dash indicates the data are suppressed.
Source: Inpatient Discharges, Ontario Ministry of Health and Long-Term Care, intelliHEALTH ONTARIO

Data sources

Hospitalization data are collected by the Canadian Institute for Health Information on a fiscal year basis. Hospitalizations for NAS were selected using ICD-10-CA code P96.1, defined as neonatal withdrawal symptoms from maternal use of drugs of addiction, excluding reactions and intoxications from maternal opiates and tranquillizers administered during labour and delivery.

For hospitalizations, a newborn may have more than one diagnostic code for each hospital discharge. As such, counts of newborns with NAS may be the primary reason for the hospital stay (e.g. most responsible diagnosis) or a comorbidity.

A newborn may also be hospitalized several times for withdrawal symptoms, or discharged from more than one hospital (when transferred). As such, the encrypted health card number, a unique number, was used to count the number of newborns with NAS identified, upon discharge, either during the initial stay in hospital after delivery or on readmission.

Data were analyzed by the residence of the patient, not where the hospitalization occurred or where the newborn was subsequently transferred. Newborns without a valid health card number and newborns treated outside of the province were excluded; however, less than 0.5 per cent of all hospitalizations for Ontario residents occurs out-of-province. NAS counts were reported by calendar year, based on discharge date of the initial stay or readmission. Live births were reported based on admission year and excluded home births, which is approximately two per cent of live births for Durham Region.

Counts and rates were supressed, represented by a dash in the table and a gap in the graph, when the count was less than five.

Definitions

Incidence rate for NAS

The number of newborns with a hospitalization for NAS (most responsible diagnosis or comorbidity) either during the stay in hospital after delivery or on readmission per 1,000 hospital births for the same year.