Data collection modes by Wave
| Questionnaire | Mode | Completed by | Indicator variable | W1 | W2 | W3 | W4 | W5 | W6 | W7 |
|---|---|---|---|---|---|---|---|---|---|---|
| Face-to-face interview (F2F) | Paper | Parent 1 | N/A | BK | - | - | - | - | - | - |
| Face-to-face interview (F2F) Computer Assisted Interview - (CAI) |
Computer | Parent 1 | N/A | - | BK | BK | BK | BK | BK | BK |
| Parent 1 during interview (P1D) | Paper | Parent 1 | [*]p1dd | BK | BK | BK | - | - | - | - |
| Parent 1 during interview (CASI) | Computer | Parent 1 | [*]p1dd | - | - | - | BK | BK | BK | BK |
| Parent 1 leave behind (P1L) | Paper | Parent 1 | [*]p1scd | BK | BK | BK | - | - | - | - |
| Parent 2 leave behind (P2L) | Paper | Parent 2 | [*]p2scd | BK | BK | BK | BK | BK | BK | BK |
| Child self-report (CSR) | Computer | Study child | [*]csrd | - | K | K | B | BK | BK | BK |
| Audio computer-assisted self-interview (ACASI) |
Computer | Study child | Need consent from: P1 [*]id40e & SC [*]id40f | - | - | - | K | K | K | B |
| Computer assisted self-interview (CASI) |
Computer | Study child | Need consent from: P1 [*]id40e & SC [*]id40f | - | - | - | - | - | - | K |
| Time use diary (TUD) | Paper | Parent 1 | N/A | BK | BK | BK | - | - | - | - |
| Time use diary (TUD) | Computer | Study child | Need consent from: P1 [*]id40i & SC [*]id40j | - | - | - | K | K | BK | B |
| Parent living elsewhere (PLE) | Paper - mailed out |
PLE | [*]plescd | - | BK | - | - | - | - | - |
| Parent living elsewhere (PLE CATI) | Computer/ Telephone |
PLE | [*]plescd | - | - | BK | BK | BK | BK | BK |
| Home-based carer (HBC) | Paper | Carer | [*]hbccbc | B | B | - | - | - | - | - |
| Centre-based carer (CBC) | Paper | Carer | [*]hbccbc | B | B | - | - | - | - | - |
| Teacher questionnaire (TQ) | Paper | Teacher | [*]tcd | K | K | BK | BK | BK | BK | B |
| Physical measurements (PM) | Computer | Study child | Need consent from: P1 [*]id30d & SC [*]id30e | BK | BK | BK | BK | BK | BK | BK |
| Who am I? (WAI) | Computer | Study child | cid44a1 | K | - | B | - | - | - | - |
| PPVT assessment (PPVT) | Computer | Study child | [*]ppvtd | K | K | BK | B | B | - | - |
| Matrix reasoning (MR) | Computer | Study child | [*]id44a1 | - | K | K | BK | B | B | - |
| Study child blood pressure (BP) | Computer | Study child | Need consent from: P1 [*]id47a & SC [*]id47b | - | - | - | K | K | B | B |
| Interviewer observations (IOBS) | Computer | Interviewer | BK | BK | BK | BK | BK | BK | BK | |
| Executive functioning (EXEC/CogSTATE) | Computer | Study Child | [*]id40m | - | - | - | - | - | K | - |
| Parent 1 | [*]id40n | - | - | - | - | - | - | K | ||
| Event history calendar (EHC) | Computer | Study Child | EHCEK16 - employment EHCRK16 - resident living away EHCSK16 - study |
- | - | - | - | - | - | K |
Notes: The indicator variable can be used to see if data is present or not for a particular instrument (for more information see sections 8.6 & 8.7). The [*] in the indicator variable should be replaced by the age indicator (a, c, d, e, f, g, h i) as discussed below. In-between waves were administered using mail out surveys for waves 1.5, 2.5 and 3.5. waves 4.5 and 5.5 used online web forms to update contact details.
