Avon classification of sudden unexpected deaths in infancy*
| 0 | Information not collected | 0/64 | 0% |
| IA | No potentially significant factors or contributory factors found (SIDS) | 0/64 | 0% |
| IB | Factors present but not likely to have contributed to the death (SIDS) | 10/64 | 15.6% |
| IIA | Factors present and may possibly have contributed to the death (SIDS) | 29/64 | 45.3% |
| IIB | Factors present and probably contributed to the death (SIDS) | 21/64 | 32.8% |
| III | Fully explained death | 4/64 | 6.3% |
*The multiprofessional case review meetings included a range of relevant professionals with experience in the field (paediatrician, paediatric pathologist, health visitor, police officer, social worker). After discussion of each case, each was categorised according to the Avon clinicopathological categorisation system8 as an explained or unexplained (SIDS) death.
SIDS, sudden infant death syndrome.