This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
CRIB II
Clinical Risk Index for Babies II in preterm infants ≤ 32 weeks – gestational age × birth weight matrix not freely available
Why this calculator does not (yet) give a result
The points for the combination of sex, gestational age and birth weight (matrix in Lancet 2003, p. 1790) could not be transcribed completely and reliably from any freely accessible source. Without this matrix the total CRIB-II score (0–27) cannot be calculated – a partial score would be misleading. The points for admission temperature and base excess (below), the risk levels 0–5 / 6–10 / 11–15 / > 15 and the mortality model logit = −6.476 + 0.450 × CRIB II are documented (in each case from a secondary source).
Temperature on admission
| Range | Points |
|---|---|
| 36.1–37.5 °C | 0 |
| 34.5–36.0 or 37.6–39.1 °C | 1 |
| 32.9–34.4 or 39.2–40.7 °C | 2 |
| 31.3–32.8 or ≥ 40.8 °C | 3 |
| 29.7–31.2 °C | 4 |
| ≤ 29.6 °C | 5 |
Base Excess (first 12 hours of life)
| Range (mmol/l) | Points |
|---|---|
| ≥ 3 | 0 |
| −2 to 2 | 1 |
| −7 to −3 | 2 |
| −12 to −8 | 3 |
| −17 to −13 | 4 |
| −22 to −18 | 5 |
| −26 to −23 | 6 |
| < −26 | 7 |
Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.