Table 3.
Description of the study population before imputation
| Variable name | N (%) | Min | Q1 | Median | Q3 | Max |
|---|---|---|---|---|---|---|
| Maternal age at birth | 863 (99.2) | 17 | 27.7 | 31.0 | 34 | 43.3 |
| Pre-pregnancy BMI | 855 (98.3) | 16.2 | 21.3 | 23.2 | 27 | 43 |
| Child age at the follow up | 870 (100) | 5.4 | 6.52 | 8.1 | 8.9 | 12 |
| Category | n (%) | |||||
| Cohort | 870 (100) | BiB | 134 (15.4) | |||
| EDEN | 112 (12.9) | |||||
| INMA | 160 (18.4) | |||||
| KANC | 129 (14.8) | |||||
| MoBA | 193 (22.2) | |||||
| RHEA | 142 (16.3) | |||||
| Highest parental education | 858 (99) | Primary | 92 (10.7) | |||
| Secondary | 266 (31.0) | |||||
| Higher | 500 (58.3) | |||||
| Child sex | 870 (100) | Girl | 411 (47.2) | |||
| Boy | 459 (52.8) | |||||
| Child weight status (IOTF) | 870 (100) | Underweight/Normal | 700 (80.5) | |||
| Overweight | 119 (13.7) | |||||
| Obese | 51 (5.9) | |||||
| Child asthma (ever) | 870 (100) | No | 767 (88.2) | |||
| Yes | 103 (11.8) | |||||
| ADHD score | 870 (100) | Not at risk for ADHD (≤ 16) | 793 (91.1) | |||
| At risk for ADHD (≥ 17) | 77 (8.9) | |||||
Population: study population from the HELIX subcohort, n = 870 children
Abbreviations: ADHD Attention Deficit Hyperactivity Disorders, BMI Body Mass Index, 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, IOTF International Obesity Task Force, KANC Kaunus Cohort, MoBa The Norwegian Mother, Father and Child Cohort Study, RHEA Mother–Child Cohort in Crete