Socioeconomic status
| | | |
Non-privately owned housing | Binary indicating response other than privately owned by parents or guardians; don’t knows omitted | What kind of house/flat do you live in? | Baseline |
Family background/relationships
| | | |
Mother teenager when participant was born | Binary indicating mother’s age minus young person’s age⩽20 years | How old is your mother? | Baseline |
Difficult communication with mother/female guardian | Binary created from 4-point ordinal scale indicating degree of ease | Do you find it easy to talk to your mother/female guardian about very private and personal things? | Baseline/first follow-up |
Difficult communication with father/male guardian | Binary created from 4-point ordinal scale indicating degree of ease | Do you find it easy to talk to your father/male guardian about very private and personal things? | Baseline/first follow-up |
Expectations of the future/perceptions of peers
| | | |
Lack of expectation of education by age 20 years | 3-point ordinal created from 5-point ordinal indicating degree of expectation | By the time you are 20 years old how likely do you think it is that you will be at university or in college or in a training scheme? | Baseline/first follow-up |
Expectation of being a parent by age 20 years | 3-point ordinal created from 5-point ordinal indicating degree of expectation | By the time you are 20 years old how likely do you think it is that you will have a child/children? | Baseline/first follow-up |
Believe half or more peers having sex | Binary indicating agreement that half or more of peers have had sex | How many young men/young women of your age do you think have had sexual intercourse? | Baseline/first follow-up |
Individual behaviours
| | | |
Intent to skip school | 3-point ordinal created from 5-point scale indicating degree of agreement with statement | When I get the chance I skip school | Baseline/first follow-up |
Drunk monthly or more | Binary created from 5-point ordinal indicating frequency of drunkenness | In the last year how often have you been drunk? | Baseline |
Sexual health knowledge
| | | |
Low knowledge of STIs | 3-point ordinal indicating number answer correct of 2 questions | Is it true that all STIs are curable? Do some STIs have no symptoms? | Baseline/first follow-up |
Low knowledge of timing of emergency contraceptive pill | Binary indicating correctness of answer | Is it true that the emergency con pill will stop a young woman getting pregnant if taken up to 3 days/72 h after having sex? | Baseline/first follow-up |
Inability to identify sexual health services | Binary indicating ability to answer | Can you think of a clinic/place to visit for advice on sex? | Baseline/first follow up |
Main source of information on sex doesn’t include school | Binary indicating whether or not school is included in answer | From which person or from where have you learnt the most about sex? | Baseline/first follow-up |