Table 3 Mental health: Overview of SDQ scores at age 5–6 and age 10–11

SDQ scores at age 10–11

 Total difficulties

6 [3, 10]

4 [2, 7]

< 0.001

 Externalizing

4 [2, 7]

2 [0, 4]

< 0.001

 Internalizing

2 [0, 4]

2 [0, 4]

0.32

 Hyperactivity

3 [1, 5]

1 [0, 3]

< 0.001

 Behavior problems

0 [0, 1]

0 [0, 1]

< 0.001

 Peer problems

0 [0, 2]

0 [0, 1]

0.013

 Emotional problems

1 [0, 2]

1 [0, 3]

0.932

 Prosocial behaviors

9 [8, 10]

10 [8, 10]

< 0.001

SDQ scores at age 5–6

 Total difficulties

5 [3, 8]

4 [2, 6]

< 0.001

 Externalizing

3 [2, 6]

2 [1, 4]

< 0.001

 Internalizing

1 [0, 3]

1 [0, 3]

0.510

 Hyperactivity

3 [1, 4.75]

1 [0, 3]

< 0.001

 Behavior problems

1 [0, 2]

0 [0, 1]

< 0.001

 Peer problems

0 [0, 1]

0 [0, 1]

0.477

 Emotional problems

1 [0, 2]

1 [0, 2]

0.229

 Prosocial behaviors

9 [8, 10]

9 [8, 10]

< 0.001