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Table 1 Participant characteristics

From: Deep phenotypic analysis of psychiatric features in genetically defined cohorts: application to XYY syndrome

Characteristic

Group

Test for group difference

 

XY

XYY

Statistic

p

Total sample size

60

64

-

-

Age (years)

    Mean (s.d.)

13.1 (5)

13.1 (6)

t = 0

p = 1

    Range

5–24

5–25

  

Full-scale IQ

    Mean (sd)

117 (11)

86 (14)

t =  − 14.1

p < 0.0001

    Range

88–144

53–112

  

SES

    Mean (sd)

39 (16)

53 (19)

t = 4.4

p < 0.0001

    Range

20–77

20–95

  

Gestation (weeks)

    Mean (sd)

39.2 (2)

38 (2)

t =  − 2.9

p = 0.004

    Range

32–42

31–42

  

Birthweight (kg)

    Mean (sd)

3.55 (0.5)

3.26 (0.6)

t =  − 2.8

p = 0.006

    Range

2.5–4.7

1.6–4.5

  

Time of XYY diagnosis

    Prenatal, n (%)

-

25 (39)

-

-

    Postnatal, n (%)

-

39 (61)

  

Vineland adaptive behavior composite score

    Mean (sd)

-

76 (13)

-

-

    Range

-

42–112

  

Caregiver strain (CSQ score)

    Mean (sd)

-

7 (3)

-

-

    Range

-

3–14

-

-