From: Gestational age at birth and behavioral problems from four to 11 years of age: birth cohort study
Gestational age (completed weeks) | 6Â years | Â | 11Â years | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Psychiatric disorders n (%) | p-valuea | Internalizing disordersn (%) | p-valuea | Externalizing disordersn (%) | p-valuea | Â | Psychiatric disordersn (%) | p-valuea | Internalizing disordersn (%) | p-valuea | Externalizing disordersn (%) | p-valuea | |
Girls | |||||||||||||
 |  | 0.488 |  | 0.706 |  | 0.389 |  |  | 0.128 |  | 0.436 |  | 0.388 |
<34 | 2(6.3) | Â | 2 (6.3) | Â | 0 (0) | Â | Â | 3 (9.4) | Â | 1 (3.1) | Â | 1 (3.1) | Â |
34–36 | 21 (12.7) |  | 17 (10.3) |  | 5 (3.0) |  |  | 21 (12.7) |  | 10 (6.1) |  | 8 (4.9) |  |
37+ | 142 (10.5) | Â | 119 (8.8) | Â | 24 (1.8) | Â | Â | 109 (8.1) | Â | 54 (4.0) | Â | 39 (2.9) | Â |
All | 165 (10.7) | Â | 138 (8.9) | Â | 29 (1.9) | Â | Â | 133 (8.6) | Â | 54 (4.2) | Â | 48 (3.1) | Â |
Boys | |||||||||||||
 |  | 0.324 |  | 0.230 |  | 0.890 |  |  | 0.143 |  | 0.746 |  | 0.842 |
<34 | 3 (7.0) | Â | 1 (2.3) | Â | 3 (7.0) | Â | Â | 7 (16.3) | Â | 1 (2.3) | Â | 3 (7.0) | Â |
34–36 | 28 (15.9) |  | 19 (10.8) |  | 10 (5.7) |  |  | 31 (17.6) |  | 8 (4.6) |  | 15 (8.5) |  |
37+ | 205 (14.3) | Â | 135 (9.4) | Â | 77 (5.4) | Â | Â | 180 (12.5) | Â | 69 (4.8) | Â | 105 (7.3) | Â |
All | 236 (14.3) | Â | 155 (9.4) | Â | 90 (5.4) | Â | Â | 218 (13.2) | Â | 78 (4.7) | Â | 123 (7.4) | Â |