Table 1.
Characteristics of the participating pregnancy cohorts (n = 218,216)a
| Cohort name, number of participants, birth years (country) | Maternal pre-pregnancy body mass index (kg/m2) | Maternal total gestational weight gain (kg) | Gestational age at birth (weeks) |
|---|---|---|---|
| ABCD, n = 7820, 2003–2004 (The Netherlands) |
22.3 (20.5, 24.8) | NA | 40.0 (39.0, 41.0) |
| ALSPAC, n = 11,344, 1991–1992 (UK) |
22.2 (20.5, 24.4) | 12.5 (9.5, 15.5) | 40.0 (39.0, 41.0) |
| AOB/F, n = 2941, 2008–2010 (Canada) |
23.0 (20.8, 26.3) | NA | 39.0 (38.0, 40.0) |
| Co.N.ER, n = 637, 2004–2005 (Italy) |
21.1 (19.7, 23.4) | 13.0 (10.0, 16.0) | 39.0 (39.0, 40.0) |
| DNBC, n = 42,761, 1996–2002 (Denmark)b |
22.5 (20.7, 25.1) | 15.0 (12.0, 18.0) | 40.1 (39.1, 41.0) |
| EDEN, n = 1875, 2003–2005 (France) |
22.1 (20.1, 25.3) | 13.0 (11.0, 16.3) | 39.0 (39.0, 40.0) |
| FCOU, n = 3650, 1993–1996 (Ukraine) |
21.6 (19.8, 24.0) | 12.0 (9.2, 15.0) | 40.0 (39.0, 41.0) |
| GASPII, n = 675, 2003–2004 (Italy) |
21.3 (19.8, 23.6) | 13.0 (10.5, 16.0) | 40.0 (39.0, 41.0) |
| GECKO Drenthe, n = 2501, 2006–2007 (The Netherlands) | 23.7 (21.5, 26.8) | 13.0 (10.0, 17.0) | 40.0 (39.0, 40.9) |
| Generation R, n = 7183 2002–2006 (The Netherlands) | 22.6 (20.8, 25.4) | 12.0 (9.0, 16.0) | 40.1 (39.0, 41.0) |
| Generation XXI, n = 7621, 2005–2006 (Portugal) | 22.9 (21.0, 25.8) | 13.0 (10.0, 17.0) | 39.0 (38.0, 40.0) |
| GENESIS, n = 2218, 2003–2004 (Greece) |
21.9 (20.2, 24.0) | 13.0 (10.0, 17.0) | 40.0 (39.0, 40.0) |
| Gen3G, n = 846, 2010–2013 (Canada) |
23.3 (20.9, 27.3) | 13.7 (10.7, 17.0) | 39.4 (38.5, 40.2) |
| GINIplus, n = 2329, 1995–1998 (Germany) |
22.1 (20.4, 24.2) | 13.0 (10.0, 15.7) | 40.0 (39.0, 41.0) |
| HUMIS, n = 1067, 2003–2008 (Norway) |
23.5 (21.3, 26.2) | 14.0 (11.0, 18.0) | 40.1 (39.0, 41.1) |
| INMA, n = 2561, 1997–2008 (Spain) |
22.5 (20.7, 25.0) | 13.5 (10.5, 16.6) | 39.9 (38.9, 40.6) |
| KOALA, n = 2812, 2000–2002 (The Netherlands) |
22.7 (20.9, 25.3) | 14.0 (11.0, 17.0) | 40.0 (39.0, 40.0) |
| Krakow Cohort, n = 503, 2000–2003 (Poland) |
21.0 (19.5, 22.7) | 15.0 (12.0, 18.0) | 40.0 (39.0, 40.0) |
| LISAplus, n = 2962, 1997–1999 (Germany) |
21.7 (20.2, 24.1) | 14.0 (11.5, 17.0) | 40.0 (39.0, 41.0) |
| LUKAS, n = 417, 2002–2005 (Finland) |
24.1 (21.9, 27.2) | 13.8 (10.9, 17.8) | 40.0 (39.0, 40.0) |
| MoBa, n = 88,503, 1999–2009 (Norway) |
23.1 (21.1, 25.9) | 15.0 (11.0, 18.0) | 40.1 (39.1, 41.0) |
| NINFEA, n = 2237, 2005–2010 (Italy)c |
21.4 (19.9, 23.9) | 12.0 (10.0, 15.0) | 39.7 (38.9, 40.7) |
| PÉLAGIE, n = 1490, 2002–2005 (France) |
21.6 (20.0, 23.8) | NA | 40.0 (39.0, 40.0) |
| PIAMA, n = 3459, 1996–1997 (The Netherlands) |
22.2 (20.6, 24.3) | 13.0 (10.0, 16.0) | 40.0 (39.1, 40.9) |
| Piccolipiù, n = 3294, 2011–2015 (Italy) |
21.7 (19.9, 24.2) | 13.0 (10.0, 15.0) | 39.0 (39.0, 40.0) |
| PRIDE Study, n = 1513, 2011–2015 (The Netherlands) |
22.5 (20.7, 24.8) | 14.0 (11.0, 17.0) | 39.0 (39.0, 40.0) |
| Project Viva, n = 2106, 1999–2002 (United States) |
23.5 (21.0, 27.3) | 15.5 (12.3, 19.1) | 39.7 (38.9, 40.6) |
| Raine Study, n = 2791, 1989–1992 (Australia) |
21.3 (19.6, 23.7) | NA | 39.0 (38.0, 40.0) |
| REPRO_PL, n = 1409, 2007–2011(Poland) |
21.5 (19.8, 23.8) | 12.0 (9.0, 15.0) | 39.0 (38.5, 40.0) |
| RHEA, n = 816, 2007–2008 (Greece) |
23.3 (21.2, 26.2) | 13.0 (10.0, 17.0) | 38.0 (38.0, 39.0) |
| Slovak PCB study, n = 1048, 2002–2004 (Slovakia) | 21.2 (19.5, 24.0) | 13.0 (10.0, 17.0) | 40.0 (39.0, 40.0) |
| STEPS, n = 1708, 2008–2010 (Finland) |
23.0 (21.1, 26.1) | 13.9 (10.8, 17.4) | 40.0 (39.0, 41.0) |
| SWS, n = 3119, 1998–2007 (UK) |
24.1 (21.9, 27.4) | 11.9 (8.3, 15.7) | 40.0 (39.0, 41.0) |
| Total group | 22.7 (20.8, 25.4) | 14.0 (11.0, 17.9) | 40.0 (39.0, 41.0) |
aValues are expressed as medians (interquartile range). NA not available
bSubset of participants with offspring body mass index available at 7 years by the time of data transfer (May 2015)
cSubset of participants with follow-up completed at 4 years of child’s age by the time of data transfer (March 2015)