Table 1. Demography of the studied population.
| THI database | Follow-up participants | Cohort remainder | ||
|---|---|---|---|---|
| n | 619 | 161 | 458 | |
| Age at injury (years) | 1.9 ± 1.5 | 2.0 ± 1.6 | 1.9 ± 1.5 | |
| Sex ratio (% boys) | 63 | 60 | 65 | |
| Age at follow-up assessment (years) | - | 7.7 ± 2.6 | - | |
| Time from injury to follow-up (years) | - | 5.7 ± 2.3 | - | |
| GCS scores | Median score (IQR) | 15 (12–15) | 13 (8–15)*** | 15 (13–15) |
| Mild (13–15) | 71% | 53%*** | 77% | |
| Moderate (9–12) | 13% | 21%*** | 10% | |
| Severe (3–8) | 16% | 26%*** | 13% | |
| AIS-HR scores | Median score (IQR) | 3 (2–4) | 4 (3–4)*** | 2 (2–4) |
| Mild–moderate (1-2) | 42% | 15%*** | 52% | |
| Serious–severe (3-4) | 48% | 70%*** | 40% | |
| Critical (5) | 10% | 15%** | 8% | |
| Days in hospital (median (IQR)) | 2 (1–8) | 5 (1–13)*** | 2 (1–6) | |
| Intensive care unit admission | 28% | 41%*** | 24% | |
| Days in ICU (median (IQR)) | 2 (1–7) | 3 (1–10)* | 2 (1–5) |
Age-related data are means ± SD. *p<0.05, **p<0.01, ***p<0.001 for follow-up participants vs the cohort remainder. Length of intensive care unit (ICU) stay refers solely to the population that was admitted to ICU. IQR – inter-quartile range.