Study country | UK | USA | Netherlands | Canada | Norway |
---|---|---|---|---|---|
Study name | MCS | SECCYD | Generation R | QLSCD | BONDS |
References | Dex and Joshi (2005) | NICHD Early Child Care Research Network (2005) | Jaddoe et al. (2006) | Jetté and Des Groseillers (2000) | Naerde et al. (2014) |
N at recruitment | 18,819 | 1364 | 7893 | 2120 | 1157 |
Year(s) of children’s birth | 2000–2002 | 1991 | 2002–2006 | 1997–1998 | 2006–2008 |
Study sites | 4 UK countriesa | 10 USA sites | City of Rotterdam | Province of Quebec | 5 South East counties |
Representative sample | Yes (of UK) | Nob | Noc | Yes (of Qc) | Nod |
Infancy | |||||
Mean age (SD) in months | 9.73 (.65) | 5.23 (.51) | 6.65 (1.04) | 4.50 (.55) | 6.33 (.62) |
N (complete data) | 15,835 | 1249 | 2208 | 2145 | 1139 |
Ethnic minority (%) | 12.6 | 18.7 | 18.6 | 8.5 | 6.2 |
Young mother (%) | 15.9 | 11.5 | 1.5 | 10.5 | 3.3 |
Low income (%) | 27.2 | 25.0 | 5.8 | 23.9 | 7.0 |
Low maternal education (%) | 26.9 | 9.2 | 8.6 | 15.7 | 8.7 |
Single parent (%) | 16.7 | 13.5 | 6.9 | 7.5 | 5.0 |
Other children in home (%) | 58.9 | 58.2 | 39.0 | 58.7 | 58.4 |
Early childhood | |||||
Mean age (SD) in months | 37.56 (2.32) | 35.77 (.94) | 36.67 (1.43) | 40.6 (.58) | 36.23 (.67) |
N (complete data) | 10,935 | 1170 | 3505 | 1887 | 1010 |
Low income (%) | 27.8 | 24.8 | 7.8 | 16.5 | 5.4 |
Low maternal education (%) | 22.5 | 8.7 | 11.1 | 12.6 | 8.1 |
Single parent (%) | 15.2 | 14.9 | 9.1 | 11.6 | 4.5 |
Other children in home (%) | 74.6 | 73.5 | 71.4 | 79.1 | 76.7 |