Supplemental Digital Content 2: Recorded variables from each individual study with references
First Author Publication year First Author
Institution Country Age
groupsa WASI
Edition Variables matched for
control group Recruitment
Bansal1 2018 University of
Maryland United
States Adult WASI-II Age, Sex, Parental education Advertisement on Internet, local libraries, and businesses
Beauchamp2 2013 University of
Montreal Canada Pediatric WASI Unclear Random sampling of regular schools from various socioeconomic backgrounds
Black3 2012 University of
Iowa United
States Adult WASI Not matched Advertisement and word of mouth
Brady4 2017 University of
Calgary Canada Pediatric
and Adult WASI Age, Sex
Advertisements in local papers and community newsletters, posters in community centers, and on the University of Calgary campus
Buchy5 2015 University of
Calgary
Canada and USA
Pediatric
and Adult WASI Age, Sex, Parental
socioeconomic status Recruited from North American Prodrome Longitudinal Study
Chang6 2016
University of California, San Francisco
United
States Adult WASI Unclear From general population –
recruitment method unclear
Coplan7 2006 Columbia
University United
States Adult WASI Age, Sex, Handedness Unclear Da Costa8 2015 University of
Toronto Canada Adult WASI Unclear Recruited through flyers and
advertisements in the community
del Re9 2020 Harvard
Medical School
United
States Adult WASI Age, Sex, Handedness Internet advertisements in the general community
Del Valle
Rubido10 2020 Roche
Innovation Center Basel
United
States Adult WASI-II Age Patients from prior study:
NCT01669889
Didehbani11 2012 University of Texas at Dallas
United
States Adult WASI Unclear Unclear
Fine12 2014 Michigan
State University
United States and Canada
Pediatric WASI Unclear Unclear
Grove13 2007 University of Wisconsin- Madison
United
States Pediatric WASI Age Partnerships with a local school system and University hospital tertiary care facility
Han14 2012 University of
Minnesota United
States Pediatric WASI Age, Sex Inpatient and outpatient clinics and community postings
Hartman15 2019 York
University Canada Adult WASI Unclear
Newspaper and online advertisements, employment centers,
neighborhood organizations
Jalal16 2021 Loma Linda
University United States
Pediatric
and Adult WASI-II Unclear
Provider referrals, voluntary response sampling through posting of recruitment flyers at UCLA psychiatric and genetic clinics;
outreach at public events in Southern California Johnson17 2013 University of
Maryland United
States Adult WASI Parental education Random digit dialing in local zip codes; word of mouth among friends
King18 2019 Georgia State
University United
States Adult WASI Age, Sex Institutional psychological research participant pool and community fliers
Lande19 2017 University of
Rochester United
States Pediatric WASI Sex, Parental education,
Proportion with obesity General pediatrics and family medicine practices
Martin20 2021 Indiana
University United
States Adult WASI Unclear Local advertisements and word of mouth
McCrimmon21 2016 University of
Calgary Canada Pediatric WASI Age, Sex
Educational organizations for children with exceptional learning needs, community-based medical offices
McCunn22 2021
The Hospital for Sick Children Research Institute, Toronto
Canada Adult WASI Unclear Civilian controls recruited with flyers posted at the Hospital for Sick Children
Nadig23 2015 McGill
University United
States Pediatric WASI Unclear Unclear
Piper24 2011
Oregon Health and Science University
United
States Pediatric WASI Age, Household income during pregnancy
Flyers at university and Portland metro area; Online advertisements on university recruitment website, Craigslist, and on Post-Adoption
Resource Center of Oregon website
Pishdadian25 2020 York
University Canada Adult WASI-II Unclear Community advertisement and online methods; hospitals, clinics Rosenbloom26 2007 Stanford
University United
States Adult WASI Age, Sex Internet posting, newspaper advertisements, flyers and word of mouth
Ruocco27 2009 University of
Chicago United
States Adult WASI Unclear Unclear
Schweitzer28 2015 University of California Davis
United
States Pediatric WASI Age, Hospital of birth Born in the same university hospital serving an inner-city population
Surgent29 2021 University of Wisconsin- Madison
United
States Pediatric WASI-II Age, Sex Unclear
Sweigert30 2020 University of
Washington United
States Pediatric WASI Age, Sex
Flyers in community spaces, advertising on laboratory website, postings in online forums for parents, and University of Washington research registry
Tomarken31 2015 Vanderbilt
University United
States Pediatric WASI Unclear
Flyers and established recruitment systems at clinics, resource centers, support groups, school, and recreational facilities
a Pediatric: less than or equal to 18 years old; Adult: greater than 18 years old
IQ = Intelligence Quotient; FSIQ = Full-Scale IQ; VIQ = Verbal IQ; PIQ = Performance IQ; ADHD = Attention Deficit Hyperactivity Disorder; ASD = Autism Spectrum Disorder; GAD = Generalized Anxiety Disorder; MDD = Major Depressive Disorder; PTSD = Post Traumatic Stress Disorder; TBI = Traumatic Brain Injury
Table Continues on Next Page
Supplemental Digital Content 3 (Continued)
First Author Healthy Control Group
Mean IQ (SD) Group(s) with Pathology Mean IQ (SD) Bansal1 n = 34
FSIQ: 109.44 (11.23) Schizophrenia (n = 48) FSIQ: 92.54 (28.7)
Beauchamp2 n = 66
FSIQ: 106 (12.8)
Mild TBI (n = 18) FSIQ: 99.83 (7.97) Moderate/severe TBI (n = 7) FSIQ: 98.5 (18.19) Black3 n = 32
FSIQ: (112.0) 12.0 Compulsive buying disorder (n = 26) FSIQ: 107.7 (12.1)
Brady4
n = 34
FSIQ: 110.44 (8.68) VIQ: 109.32 (11.02) PIQ: 109.03 (9.42)
ASD (n = 34)
FSIQ: 112.76 (10.73) VIQ: 114.29 (12.02) PIQ: 108.03 (11.06) Buchy5 n = 263
FSIQ: 109.5 (14.0) High risk for psychosis (n = 678) FSIQ: 104.5 (15.4)
Chang6 n = 28
VIQ: 101.9 (17.9) PIQ: 99.1 (15.3)
16p11.2 duplication carrier (n = 22) VIQ: 101.6 (12.2)
PIQ: 99.7 (13.8)
16p11.2 deletion carrier (n = 7) VIQ: 94.1 (14.8)
PIQ: 90.9 (10.0) Coplan7 n = 15
FSIQ: 108.33 (15.3) GAD (n = 15)
FSIQ: 119.53 (8.08) Da Costa8 n = 16
FSIQ: 114.7 (8.31) TBI (n = 16)
FSIQ: 106.7 (12.64) del Re9 n = 22
FSIQ: 118.3 (13.7) Early psychosis (n = 22) FSIQ: 107.7 (17.5) Del Valle
Rubido10
n = 19
FSIQ: 117.7 (9.7) VIQ: 117.6 (12.0) PIQ: 113.5 (11.0)
ASD (n = 38)
FSIQ: 101.1 (14.3) VIQ: 100.5 (16.1) PIQ: 100.6 (12.7) Didehbani11 n = 21
FSIQ: 112.2 (10.22) Schizophrenia or schizoaffective disorder (n = 19) FSIQ: 102.24 (14.81)
Fine12
n = 57
FSIQ: 112.56 (10.18) VIQ: 112.93 (12.66) PIQ: 109.66 (11.19)
ADHD – combined type (n = 25) FSIQ: 108.88 (7.35)
VIQ: 107.64 (10.03) PIQ: 108.2 (10.7)
ADHD – predominately inattentive type (n = 23) FSIQ: 103.9 (12.9)
VIQ: 103.87 (14.5) PIQ: 105.22 (11.0)
High-functioning ASD (n = 23) FSIQ: 107.26 (17.1)
VIQ: 110.96 (15.18) PIQ: 102.96 (19.11)
Nonverbal learning disability (n = 19) FSIQ: 115.74 (13.6)
VIQ: 117.47 (13.02) PIQ: 97.32 (14.99) Grove13 n = 14
VIQ: 124.4 (16.8) Developmental coordination disorder (n =16) VIQ: 123.1 (16.8)
Han14 n = 30
FSIQ: 115.37 (9.93) MDD (n = 31)
FSIQ: 108.63 (13.92)
Hartman15 n = 62
FSIQ: 101.56 (20.33)
Schizophrenia (n = 44) FSIQ: 93.59 (21.18)
Schizoaffective disorder (n = 29) FSIQ: 100.72 (20.77)
Jalal16 n = 102
FSIQ: 110.4 (15.27)
22q11.2 deletion (n = 50) FSIQ: 74.49 (13.89)
First episode psychosis (n = 49) FSIQ: 98.48 (15.49)
High risk for psychosis (n = 48) FSIQ: 108.58 (15.62)
ASD (n = 24)
FSIQ: 110.17 (16.41) Johnson17 n = 77
FSIQ: 113.86 (10.77) Schizophrenia or schizoaffective disorder (n = 99) FSIQ: 97.08 (14.39)
King18 n = 57
FSIQ: 109.82 (9.5) Childhood brain tumor survivor (n = 57) FSIQ: 94.42 (18.68)
Lande19 n = 75
FSIQ: 101.0 (12.4) Primary hypertension (n = 75) FSIQ: 97.4 (11.0)
Martin20 n = 40
FSIQ: 114.7 (10.3) Cannabis use (n = 40) FSIQ: 109.9 (8.9)
McCrimmon21
n = 20
FSIQ: 116.55 (9.77) VIQ: 116.2 (12.97) PIQ: 114.25 (11.85)
High-functioning ASD (n = 20) FSIQ: 120.3 (12.73)
VIQ: 115.9 (12.04) PIQ: 120.4 (14.39)
McCunn22 n = 13
FSIQ: 115.8 (7.8)
Trauma exposure (n = 25) FSIQ: 117.6 (13.9) PTSD (n = 23) FSIQ: 109.2 (13.5)
Nadig23 n = 11
PIQ: 116.0 (13.0) High-functioning ASD (n = 15) PIQ: 111.0 (17.0)
Piper24 n = 35
FSIQ: 104.5 (3.7) Methamphetamine/polysubstance use disorder (n = 31) FSIQ: 95.1 (3.5)
Pishdadian25 n = 32
FSIQ: 105.75 (14.26) Schizophrenia (n = 25) FSIQ: 98.44 (16.56)
Rosenbloom26
n = 26
FSIQ: 118.7 (13.6) VIQ: 114.5 (12.0) PIQ: 118.3 (13.7)
Alcohol dependence (n = 15) FSIQ: 109.4 (13.2) VIQ: 107.5 (14.6) PIQ: 109.5 (11.3)
Ruocco27 n = 61
FSIQ: 108.5 (16.3)
Cluster B personality disorders (n = 56) FSIQ: 117.2 (13.1)
Cluster C personality disorders (n = 19) FSIQ: 107.0 (15.2)
Schweitzer28 n = 20
FSIQ: 91.8 (13.25) Intrauterine cocaine exposure (n = 27) FSIQ: 88.0 (12.37)
Surgent29 n = 36
FSIQ: 112.0 (12.0) ASD (n = 42)
FSIQ: 102.0 (17.0)
Sweigert30
n = 46
FSIQ: 119.35 (11.06) VIQ: 119.11 (11.19) PIQ: 115.28 (13.12)
Sensory processing disorder (n = 44) FSIQ: 115.64 (18.12)
VIQ: 114.75 (18.07) PIQ: 113.02 (16.8) ASD (n = 43)
FSIQ: 112.33 (17.9) VIQ: 107.33 (21.21) PIQ: 114.91 (14.33)
Tomarken31
n = 27
FSIQ: 120.45 (13.97) VIQ: 123.59 (14.62) PIQ: 113.1 (14.34)
ASD (n = 36)
FSIQ: 104.42 (25.45) VIQ: 101.18 (24.07) PIQ: 101.18 (19.1)
IQ = Intelligence Quotient; FSIQ = Full-Scale IQ; VIQ = Verbal IQ; PIQ = Performance IQ; ADHD = Attention Deficit Hyperactivity Disorder; ASD = Autism Spectrum Disorder; GAD = Generalized Anxiety Disorder; MDD = Major Depressive Disorder; PTSD = Post Traumatic Stress Disorder; TBI = Traumatic Brain Injury