Table 2: Substance use and treatment during pregnancy.

Characteristics ResultNational data

Primary drug at initial presentation
 % Methadone43.2
 % Heroin33.1
 % Cannabis8.6
 % Buprenorphine5.0
 % Alcohol3.6
Method of use for primary drug
 % IVDU34.5
Secondary drug at presentation
 % A second opiate20.8
 % Benzodiazepines15.1
 % Cannabis15.1
 % Cocaine5.8
Substances used during pregnancy
 % Nicotine84.916.6**
 % Methadone74.8
 % Marijuana45.0
 % Heroin37.4
 % Benzodiazepines20.1
 % Amphetamines12.9
 % Alcohol 12.9
 % Cocaine 11.5
 % Buprenorphine 10.8
 % Ecstasy 1.4
 % Inhalants0
 % Polydrug use91.4
Pharmacotherapy for substance use
 % Methadone72.7
 % Buprenorphine8.6
 % Naltrexone/Benzo1.4
 % Nil treatment17.3
Communicable disease
 % Any type62.6
 % Hepatitis C antibodies59.7
 % Hepatitis B surface antigen1.4
 % Hepatitis C PCR††positive49.6
 % Syphilis antibodies0.7

* value < 0.05; ** value < 0.001.
IVDU: intravenous drug user.
††PCR: polymerase chain reaction (test).