Table 1 Descriptive characteristics of the overall population (N [%] or mean [STD]) by SDQ hyperactivity-inattention score in the ELFE study (n = 10,898).
Variable | SDQ hyperactivity-inattention score | |||
|---|---|---|---|---|
Study Population n = 10,898 | Score < 7 n = 9645 | Score ≥ 7 n = 1253 | p-valuea | |
Sociodemographics | ||||
Maternal age (at birth) (n = 10,855) | 30.9 [4.7] | 31.0 [4.6] | 30.1 [4.9] | < 0.001 |
Maternal Country of birth (n = 10,895) | 0.40 | |||
France | 9861 (90.5) | 8715 (90.4) | 1146 (91.5) | |
EU | 234 (2.1) | 212 (2.2) | 22 (1.8) | |
Other | 803 (7.4) | 718 (7.4) | 85 (6.8) | |
Maternal education (at birth) (n = 10,893) | < 0.001 | |||
High | 7378 (67.7) | 6666 (69.1) | 712 (56.8) | |
Medium | 3038 (27.9) | 2565 (26.6) | 473 (37.7) | |
Low | 480 (4.4) | 412 (4.3) | 68 (5.4) | |
Monthly income (n = 10,402) | < 0.001 | |||
1st quartile | 2571 (24.7) | 2173 (23.6) | 398 (33.4) | |
2nd quartile | 3578 (34.4) | 3161 (34.3) | 417 (35.0) | |
3rd quartile | 2534 (24.4) | 2285 (24.8) | 249 (20.9) | |
4th quartile (highest) | 1721 (16.5) | 1594 (17.3) | 127 (10.7) | |
Parental health | ||||
Maternal BMI category (n = 10,749) | < 0.001 | |||
Underweight (< 18.5 kg/m2) | 755 (7.0) | 667 (7.0) | 88 (7.1) | |
Normal (18.5-25 kg/m2) | 7252 (67.4) | 6492 (68.3) | 760 (61.0) | |
Overweight (25-30 kg/m2) | 1774 (16.5) | 1530 (16.1) | 244 (19.6) | |
Obese (≥ 30 kg/m2) | 971 (9.0) | 818 (8.6) | 153 (12.3) | |
Paternal BMI category (n = 9383) | < 0.001 | |||
Underweight (< 18.5 kg/m2) | 72 (0.8) | 63 (0.8) | 9 (0.9) | |
Normal (18.5-25 kg/m2) | 5221 (55.6) | 4671 (56.0) | 550 (52.8) | |
Overweight (25-30 kg/m2) | 3378 (36.0) | 3005 (36.0) | 373 (35.8) | |
Obese (≥ 30 kg/m2) | 716 (7.6) | 607 (7.3) | 109 (10.5) | |
Parity (n = 10,755) | < 0.001 | |||
0 | 4964 (46.1) | 4293 (45.1) | 671 (54.0) | |
1 | 3921 (36.4) | 3519 (37.0) | 402 (32.4) | |
2 | 1405 (13.1) | 1280 (13.5) | 125 (10.1) | |
≥ 3 | 468 (4.4) | 424 (4.5) | 44 (3.5) | |
Gestational weight gain (kg) (n = 10,682) | 13.2 [5.2] | 13.2 [5.1] | 13.4 [5.7] | 0.25 |
History of diabetes (n = 10,600) | 0.09 | |||
No | 10,241 (96.6) | 9078 (96.7) | 1163 (95.6) | |
Type I/Type II | 101 (1.0) | 85 (0.9) | 16 (1.3) | |
Previous gestational diabetes | 258 (2.4) | 220 (2.3) | 38 (3.1) | |
Gestational diabetes (n = 10,384) | 0.99 | |||
No | 9674 (93.3) | 8567 (93.3) | 1107 (93.3) | |
Yes | 690 (6.7) | 611 (6.7) | 79 (6.7) | |
Hypertension during pregnancy (n = 10,596) | 0.08 | |||
No | 10,386 (98.0) | 9205 (98.1) | 1181 (97.4) | |
Yes | 210 (2.0) | 178 (1.9) | 32 (2.6) | |
Any psychiatric disorder (during pregnancy) (n = 10,797) | < 0.001 | |||
No | 9487 (87.8) | 8429 (88.2) | 1058 (84.8) | |
Yes | 1313 (12.2) | 1123 (11.8) | 190 (15.2) | |
Maternal lifestyle | ||||
Maternal smoking in pregnancy (n = 10,792) | < 0.001 | |||
No | 9015 (83.5) | 8039 (84.2) | 976 (78.2) | |
Yes | 1780 (16.5) | 1508 (15.8) | 272 (21.8) | |
Maternal alcohol intake in pregnancy (n = 10,153) | 0.06 | |||
Light (< 3 units) | 6103 (60.1) | 5370 (59.8) | 733 (62.8) | |
Moderate (3–7 units) | 3967 (39.1) | 3545 (39.5) | 422 (36.1) | |
Heavy (≥ 7 units) | 84 (0.8) | 71 (0.8) | 13 (1.1) | |
Pregnancy diet quality score (n = 9796) | 7.7 [0.8] | 7.7 [0.8] | 7.6 [0.8] | < 0.001 |
Physical activity score (3rd Trimester) (n = 9853) | 174.5 [84.7] | 173.9 [84.6] | 179.0 [85.4] | 0.06 |
Pregnancy/delivery | ||||
Gestational age (weeks) (n = 10,586) | 39.6 [1.4] | 39.6 [1.4] | 39.7 [1.4] | 0.51 |
Birth weight (g) (n = 10,532) | 3340 [479] | 3338 [479] | 3352 [479] | 0.35 |
Child characteristics | ||||
Duration of any breastfeeding (n = 9094) | 0.41 | |||
None | 2920 (32.1) | 2603 (32.3) | 317 (31.0) | |
< 6 months | 4313 (47.4) | 3831 (47.5) | 482 (47.1) | |
≥ 6 months | 1861 (20.5) | 1636 (20.3) | 225 (22.0) | |
Sex of child (n = 10,645) | 0.60 | |||
Male | 5522 (51.9) | 4879 (51.8) | 643 (52.6) | |
Female | 5123 (48.1) | 4543 (48.2) | 580 (47.4) | |
Childcare at 2Y (n = 10,404) | 0.01 | |||
Parents | 2630 (25.3) | 2285 (24.8) | 345 (29.0) | |
Relatives | 779 (7.5) | 688 (7.5) | 91 (7.7) | |
Professional | 4595 (44.1) | 4091 (44.4) | 504 (42.4) | |
Childcare Centre | 2404 (23.1) | 2155 (23.4) | 249 (20.9) | |
Difficulties falling asleep (2Y) (n = 10,370) | < 0.001 | |||
Never | 5517 (53.2) | 4947 (53.8) | 570 (48.3) | |
Sometimes | 3262 (31.4) | 2867 (31.2) | 395 (33.4) | |
Often | 1596 (15.4) | 1380 (15.0) | 216 (18.3) | |
Total screentime duration (hours/day) (2Y) (n = 10,472) | 0.41 [0.5] | 0.41 [0.5] | 0.47 [0.6] | < 0.001 |
Child's age at 5Y follow-up (months) (n = 10,895) | 66.5 [1.8] | 66.5 [1.8] | 66.3 [1.7] | < 0.001 |
