Table 2 Sample description

From: Disentangling polygenic associations between attention-deficit/hyperactivity disorder, educational attainment, literacy and language

Phenotype

Sample

Source

Ethnicity

Imputation reference panel

N

LRAs

ALSPAC

General population

White European

HRC r1.1

≤5891

ADHD

PGC

Clinical sample

Predominantly white European

HapMap phase 3

16,203 (Ncases = 4163)

ADHD

iPSYCH

Clinical sample

White European

1000 Genomes phase 3

37,076 (Ncases = 14,584)

ADHD

PGC + iPSYCH (EUR)

Clinical sample

White European

1000 Genomes phase 3

53,293 (Ncases = 19,099)

ADHD

PGC + iPSYCH

Clinical sample

Predominantly white European

1000 Genomes phase 3

55,374 (Ncases = 20,183)

EA

SSGAC

Predominantly general population

White European

1000 Genomes phase 3a

326,041

  1. aPredominantly 1000 Genomes phase 3 (20)
  2. Abbreviations: LRAs literacy-related and language-related abilities, ADHD Attention-Deficit/Hyperactivity Disorder, EA educational attainment, ALSPAC Avon Longitudinal study of Parents and Children, PGC Psychiatric Genomics Consortium, iPSYCH The Lundbeck Foundation Initiative for Integrative Psychiatric Research, EUR European ancestry, SSGAC Social Science Genetic Consortium, HRC The Haplotype Reference Consortium
  3. Note: There is no overlap between LRA, ADHD and EA samples
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