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Table 1 Characteristics of included observational studies measuring risk of ASD and ADHD with antidepressant exposure in pregnancy

From: Antidepressant use during pregnancy and risk of autism spectrum disorder and attention deficit hyperactivity disorder: systematic review of observational studies and methodological considerations

Study [Reference]

Primary study design

Number of children

Number of cases

Case definition

Data source, country (period)

Autism spectrum disorder

 Boukhris 2015 [16]

Cohort

145,456

1054

ICD-9, ICD-10

Quebec pregnancy children’s cohort, Canada (1998–2009)

 Brown 2017 [25]

Cohort

35,906

394

ICD-9, ICD-10

Administrative databases, Ontario, Canada (2002–2010)

 Castro 2016 [18]

Case–control

4650

1245

ICD-9

Massachusetts General Hospital, USA (1997–2010)

 Clements 2015 [17]

Case–control

5399

1377

ICD-9

Massachusetts General Hospital, USAa (1997–2010)

 Croen 2011 [26]

Case–control

1805

298

ICD-9

Kaiser Permanente, USA (1995–1999)

 El Marroun 2014 [19]

Cohort

5976

Not reported

*CBCL 1.5–5, SRS

Generation R study, Netherlands (2002–2006)

 Eriksson 2012 [27]

Case–control

173,577

187

Clinical diagnosis

Stockholm, Sweden (2002–2006)

 Gidaya 2014 [28]

Case–control

57,365

5215

ICD-10

Danish Civil Registration System, Denmark (1996–2006)

 Harrington 2014 [29]

Case–control

966

492

ADI-R/ADOS

Charge study, USA (2003–2010)

 Hviid 2013 [30]

Cohort

626,875

3892

ICD-10

Danish Civil Registration System, Denmark (1997–2005)

 Malm 2016 [31]

Cohort

64,754

307

ICD-10

National registers, Finland (1996–2010)

 Rai 2013 [32]

Case–control

47,706

4429

ICD-9, ICD-10

Regional administrative registries, Sweden (2001–2007)

 Sorensen 2013 [33]

Cohort

655,615

5437

ICD-8, ICD-10

Danish Civil Registration System, Denmark (1996–2006)

 Sujan 2017 [34]

Cohort

1,580,629

14,617

ICD-9, ICD-10

National administrative registries, Sweden (1996–2012)

 Viktorin 2017 [35]

Cohort

179,007

1641

ICD-10

National administrative registries, Sweden (2006–2007)

Attention deficit hyperactivity disorder

 Castro 2016 [18]

Case–control

5498

1701

ICD-9

Massachusetts General Hospital, USA (1997–2010)

 Clements 2015 [17]

Case–control

7874

2243

ICD-9

Massachusetts General Hospital, USAa (1997–2010)

 Figueroa 2010 [36]

Case–control

38,572

431

ICD-9

Marketscan, USA (1997–2006)

 Laugesen 2013 [37]

Cohort

877,778

12,841

ICD-8, ICD-10

Danish Civil Registration System, Denmark (1996–2009)

 Malm 2016 [31]

Cohort

64,754

514

ICD-10

National registers, Finland (1996–2010)

 Man 2017 [38]

Cohort

190,618

5659

ICD-9

Clinical Data Analysis & Reporting System, Hong Kong (2001–2009)

 Sujan 2017 [34]

Cohort

1,580,629

32,924

ICD-9, ICD-10

National administrative registries, Sweden (1996–2012)

  1. *Parent-reported autistic symptoms assessed using: CBCL 1.5–5, the pervasive developmental problems subscale of the Child Behaviour Checklist for ages 1.5–5, and SRS, the Social Responsiveness Scale
  2. “Clinical diagnosis” indicates receiving intervention for ASD at a specialised Autism Centre for Young Children
  3. ADI-R Autism Diagnostic Interview, Revised, ADOS Autism Diagnostic Observation Schedule, ICD International Classification of Disease coding system
  4. aNew, independent cohort