Table 2.
Description of the Study Population.
| Parental characteristics | N (%) or median (quartile range) |
|---|---|
| Cohort of inclusion | |
| BIB, United Kingdom | 205 (15.9) |
| EDEN, France | 197 (15.3) |
| INMA, Spain | 218 (17) |
| KANC, Lithuania | 202 (15.7) |
| MoBa, Norway | 272 (21.2) |
| Rhea, Greece | 192 (14.9) |
| Family native from the country of the cohort | |
| Both native parents | 1056 (84) |
| 1 native parent | 62 (4.93) |
| No native parent | 139 (11.1) |
| Maternal age at inclusion, yrs | 31 (27.2–34) |
| Maternal education | |
| Primary | 171 (13.8) |
| Secondary | 429 (34.5) |
| Higher | 643 (51.7) |
| Paternal education | |
| Primary | 207 (17.3) |
| Secondary | 465 (38.8) |
| Higher | 526 (43.9) |
| Marital status | |
| Cohabitant | 183 (14.2%) |
| Divorced/separated | 81 (6.3%) |
| Married | 958 (74.5%) |
| Single | 54 (4.2%) |
| Other | 8 (0.6%) |
| Trimester of conception | |
| Jan-March | 409 (32.1) |
| April-June | 257 (20.2) |
| July-Sept | 275 (21.6) |
| Oct-Dec | 332 (26.1) |
| Who completed the behavioural questionnaires? | |
| Father | 63 (4.9%) |
| Mother | 1215 (94.5%) |
| Child Characteristics | |
| Child's ethnicity | |
| Caucasian | 1155 (89.9) |
| Non-Caucasian | 130 (10.1) |
| Child's BMI category* | |
| Thinness | 100 (7.8) |
| Normal wt | 929 (72.7) |
| Overweight | 180 (14.1) |
| Obese | 69 (5.4) |
| Sex | |
| Female | 580 (45.1) |
| Male | 706 (54.9) |
| Age (years) | 8.05 (6.4–8.9) |
| Visit psychologist regularly | |
| No | 1235 (96.0%) |
| Yes | 50 (3.9%) |
| Any previous neuropsychological diagnosis | |
| No | 1191 (92.6%) |
| Yes | 94 (7.3%) |
| Internalizing scales | 5 (2–9) |
| Externalizing scales | 5 (2–10) |
| ADHD Index (Conners) | 6 (2–11) |
BIB = Born in Bradford; EDEN = Étude des Déterminants pré et postnatals du développement et de la santé de l’Enfant; INMA = INfancia y Medio Ambiente; KANC = Kaunas Cohort; MoBa = Norwegian Mother, Father and Child Cohort Study; Rhea = Mother-Child Cohort in Crete.
*
According to the WHO growth reference for children age between 5 and 19 years. World Health Organization. Growth reference 5–19 years. Available at: http://www.who.int/growthref/who2007_bmi_for_age/en/. Accessed August 2, 2019.