Table 3.
SDQ total difficulties scores in extremely preterm participants by age of assessment, stratified by child behavior checklist classification at age 2.5 and moderate/severe cognitive impairment at last assessment
| Age 6 years (n = 241) | Age 11 years (n = 219) | Age 16 years (n = 138) | Age 19 years (n = 127) | |
|---|---|---|---|---|
| CBCL at age 2.5 years | ||||
| Normal/borderline | ||||
| No. (%) | 167 (79.1) | 160 (79.6) | 107 (80.5) | 93 (82.3) |
| Mean (95% CI) | 10.7 (9.8–11.6) | 9.3 (8.3–10.3) | 10.6 (9.3–11.9) | 11.1 (9.7–12.4) |
| Clinical | ||||
| No. (%) | 44 (20.9) | 41 (20.4) | 26 (19.5) | 20 (17.7) |
| Mean (95% CI) | 17.9 (16.0–19.9) | 17.0 (14.6–19.4) | 17.4 (14.1–20.8) | 17.0 (14.0–20.0) |
| Mean difference (95% CI) | 7.2 (5.2–9.2) | 7.7 (5.4–10.0) | 6.8 (3.8–9.9) | 5.9 (2.7–9.1) |
| Cognitive impairment | ||||
| No/mild impairment | ||||
| No. (%) | 117 (53.2) | 118 (56.5) | 76 (56.7) | 63 (54.3) |
| Mean (95% CI) | 10.9 (9.7–12.1) | 9.0 (7.8–10.3) | 9.7 (8.3–11.2) | 10.4 (8.7–12.1) |
| Moderate/severe impairment | ||||
| No. (%) | 103 (46.8) | 91 (43.5) | 58 (43.3) | 53 (45.7) |
| Mean (95% CI) | 13.8 (12.5–15.0) | 13.8 (12.3–15.3) | 14.7 (12.7–16.8) | 14.3 (12.5–16.1) |
| Mean difference (95% CI) | 2.9 (1.1–4.6) | 4.8 (2.8–6.8) | 5.0 (2.6–7.5) | 3.9 (1.4–6.4) |
Higher scores indicate more behavioral problems
CBCL child behavior checklist, EPT extremely preterm, SDQ strengths and difficulties questionnaire