Table 2 Group differences in terms of Strength and Difficulties Questionnaires, mean/n [SD(%)]
|  | B-LBC (1) | O-LBC (2) | N-LBC (3) | F or χ2 | PC$ |
|---|---|---|---|---|---|
Emotional symptomsa, mean (SD) | 3.6 (2.2) | 3.5 (2.2) | 3.3 (2.1) | 4.75** | (1, 3) |
Emotional symptoms (categorical)1 | Â | Â | Â | 10.58** | (1, 3) |
 Normal/borderline (0–6) | 608 (87.5) | 490 (88.9) | 683 (92.5) |  |  |
 Abnormal (7–10) | 87 (12.5) | 61 (11.1) | 55 (7.5) |  |  |
Conduct problemsb, mean (SD) | 2.5 (1.6) | 2.4 (1.6) | 2.4 (1.6) | 0.82 | Â |
Conduct problems (categorical)2 | Â | Â | Â | 0.65 | Â |
 Normal/borderline (0–4) | 619 (89.1) | 493 (90.5) | 660 (89.6) |  |  |
 Abnormal (5–10) | 76 (10.9) | 52 (9.5) | 77 (10.4) |  |  |
Hyperactivityc, mean (SD) | 4.1 (2.2) | 4.0 (2.1) | 3.8 (2.1) | 3.64* | (1, 3) |
Hyperactivity (categorical)3 | Â | Â | Â | 8.31* | (1, 3) |
 Normal/borderline (0–6) | 601 (86.0) | 474 (86.3) | 668 (90.5) |  |  |
 Abnormal (7–10) | 98 (14.0) | 75 (13.7) | 70 (9.5) |  |  |
Peer problemsd, mean (SD) | 2.7 (1.7) | 2.7 (1.6) | 2.6 (1.6) | 0.98 | Â |
Peer problems (categorical)4 | Â | Â | Â | 2.00 | Â |
 Normal/borderline (0–5) | 653 (93.4) | 521 (94.6) | 702 (95.1) |  |  |
 Abnormal (6–10) | 46 (6.6) | 30 (5.4) | 36 (4.9) |  |  |
Total difficulties scoree, mean (SD) | 12.8 (5.5) | 12.7 (5.3) | 12.0 (5.2) | 4.25* | (1, 3) |
Total difficulties score (categorical)5 | Â | Â | Â | 8.53* | (1, 3) |
 Normal/borderline (0–19) | 600 (86.8) | 479 (88.7) | 667 (91.6) |  |  |
 Abnormal (20–40) | 91 (13.2) | 61 (11.3) | 61 (8.4) |  |  |
Prosocialf, mean (SD) | 6.9 (2.0) | 6.8 (2.1) | 7.0 (2.0) | 2.03 | Â |
Prosocial (categorical)6 | Â | Â | Â | 1.82 | Â |
 Normal/borderline (5–10) | 625 (89.9) | 491 (89.1) | 672 (91.3) |  |  |
 Abnormal (0–4) | 70 (10.1) | 60 (10.9) | 64 (8.7) |  |  |