Table 2 Estimation for risk of development of ADHD in children in relation to the history of mother’s gestational period and the infant health status (Pediatric Alexandria University Hospital, 2022)
Risk Factors | Cases (n = 126) | Controls (n = 126) | OR (95%CI) | |
|---|---|---|---|---|
N (%) (n = 73) | N (%) (n = 66) | |||
Spacing between the 2 pregnancies in months | Â | Â | Â | |
 Min. – Max.  Median (IQR) | 2.0–63.0 4.0 (3.0–7.0) | 3.0–108.0 36.0 (24.0–60.0) | 0.92 (0.90–0.94) | |
Vitamins intake | Â | Â | Â | |
 No | 19 (15.1) | 3 (2.4) | 7.28 (2.10–25.28) | |
 Yes (Ref) | 107 (84.9) | 123 (97.6) | 1 | |
Delivery mode | Â | Â | Â | |
 Normal vaginal delivery (Ref)  Caesarian Section | 62 (49.2) 64 (50.8) | 38 (30.2) 88 (69.8) | 1 0.45 (0.27–0.75) | |
Weight of the child at birth | Â | Â | Â | |
 Normal weight 2500 gram (Ref)  Weight less than 2500 gram | 68 (38.1) 58 (20.6) | 96 (76.2) 30 (23.8) | 1 2.72 (1.59–4.68) | |
Suffering of the child from any disease | Â | Â | Â | |
 No diseases (Ref)  Neonatal jaundice for long period  Asthma | 74 (58.8) 42 (33.3) 10 (7.9) | 113 (89.7) 12 (9.5) 1 (0.8) | 1 7.44 (3.54–15.64) 21.25 (2.63-171.75) | |
Type of Feeding | Â | Â | Â | |
 Bottle feeding  Breast feeding (Ref) | 10 (7.9) 116 (92.1) | 3 (2.4) 123 (97.6) | 3.53 (0.95–13.16) 1 | |