Cluster 1

Average-Active

(n = 288)

Cluster 2

Regulated

(n = 179)

Cluster 3

Average-Quiet

(n = 288)

Cluster 4

Sensitive/Hyperreactive (n = 145)

Turkey’s

post hoc

comparison

EASI subscales

E

9.28 (2.17)

5.92 (1.82)

8.88 (2.03)

11.26 (2.05)

2 < 1, 3 < 4

A

11.48 (1.90)

6.35 (1.76)

8.18 (1.73)

11.62 (1.99)

2 < 3 < 1, 4

S

12.18 (1.61)

11.51 (1.99)

9.55 (1.94)

8.79 (2.17)

4 < 3 < 2 < 1

I

16.27 (2.53)

10.69 (2.08)

14.32 (1.95)

18.72 (2.35)

2 < 3 < 1 < 4

CBCL

Internalising behaviour score

5.5 (6.8)

2.8 (4.0)

6.4 (8.0)

10.8 (9.4)

2 < 1 < 3 < 4

Externalising behaviour score

8.9 (7.1)

2.1 (3.2)

6.3 (6.4)

13.8 (8.5)

2 < 1 < 3 < 4

Total score

22.9 (20.0)

9.5 (10.7)

20.8 (21.8)

38.9 (26.1)

2 < 1, 3 < 4

Rate of boys

56.3%

49.2%

47.9%

51.7%

χ²(3) = 4.6 NS