Gender
1 = Boy
2 = Girl

Month of birth (Recoded)
1 = January
2 = February
3 = March
4 = April
5 = May
6 = June
7 = July
8 = August
9 = September
10 = October
11 = November
12 = December
13 = Jan - June 1996
14 = July - December 1997
15 = 1998 or 1999

Year of birth
1 = 1996
2 = 1997
3 = 1998 or 1999

Child's country of birth
1 = UK or Ireland
2 = Outside UK and Ireland

1 = One identity - Northern Irish
2 = One identity - Ulster
3 = One identity - Irish
4 = One identity - British
5 = One identity - Polish, Lithuanian, Portuguese, Bangladeshi, Indian, Traveller, Chinese
6 = Two identities - UK or Ireland and one of above
9 = Two or more identities - any combination

Have long term illness
1 = Yes
2 = No
3 = Not sure

Family has car
1 = Yes
2 = No
3 = Don't live with family

Number of family holidays in the last 12 months
0 = None
1 = One
2 = Two
3 = Three
4 = Four
5 = Five or more

Number of computers
0 = None
1 = One
2 = Two
3 = Three
4 = Four or more

Have own mobile phone
1 = Yes
2 = No

Happy in primary school
1 = Mostly happy
2 = Mostly unhappy
3 = Can't decide

Someone help with homework
1 = Yes
2 = No
3 = Sometimes
4 = Can't decide

How feel about writing
1 = Completely unhappy
2 = A bit unhappy
3 = Neither happy nor unhappy
4 = A bit happy
5 = Completely happy

Pupils in school get bullied
1 = A lot
2 = A little
3 = Not at all
4 = Don't know

Someone at school deal with bullying
1 = Yes
2 = No
3 = Don't know

Feel under pressure due to test
1 = Felt lot pressure
2 = Felt no pressure at all
3 = Somewhere in between
4 = Not sure

Pressure from teachers
1 = Pressure teachers

Pressure from someone at home
1 = Pressure parents

Pressure from self
1 = Pressure from self

Pressure from other children
1 = Pressure friends other children

Pressure not sure
1 = Pressure not sure

Transfer test grade
1 = A
2 = B1
3 = B2
4 = C1
5 = C2
6 = D
7 = Don't want to say

Transfer test grade how feel
1 = Pleased
2 = Disappointed
3 = OK
4 = Didn't really care

Transfer test sad
1 = Just bit disappointed
2 = Really sad
3 = Not sure

Transfer test what should happen
1 = Get rid of it
2 = Keep it
3 = Not sure

New school how feel
1 = Happy
2 = Not happy
3 = Not sure

Kidscreen1:health
1 = Poor (original5)
2 = Fair (original4)
3 = Good
4 = Very good (original2)
5 = Excellent (original1)

Kidscreen2:fit and well
1 = Not at all
2 = Slightly
3 = Moderately
4 = Very
5 = Extremely

Kidscreen5:full energy
1 = Never
2 = Seldom
3 = Quite often
4 = Very often
5 = Always

Kidscreen9:felt sad
1 = Always (original5)
2 = Very often (original4)
3 = Quite often
4 = Seldom (original2)
5 = Never (original1)