| Approximate age of study participants at succeeding waves of data collection | |||||||||||||||||||
| 1 | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | 25 | 27 | 29 | 31 | 33 | 35 | Who was interviewed? |
|
Wave 1 1975 |
Mother only | ||||||||||||||||||
Wave 2 1983 |
Mother & participant | ||||||||||||||||||
Wave 3 1985-6 |
Mother & participant; some siblings | ||||||||||||||||||
Wave 4 1990-3 |
Mother & participant; some offspring | ||||||||||||||||||
Wave 5 1995-8 |
Participant only | ||||||||||||||||||
Transitions Study 1997-9 |
240 out of 800 participants | ||||||||||||||||||
Wave 6 2001-present |
Participant only | ||||||||||||||||||