Prematurity and medical complications account for 89 per cent of deaths while accidents and non-medical causes made up the rest.

Twenty per cent of children who died in the ACT during the five-year period were known to Care and Protection Services.

The majority of ACT child deaths - 60 per cent - occurred in babies under one year of age, correlating with 61 per cent found in a separate NSW analysis. The deaths of children and young people under 18 in the ACT between 2008 and 2013 have been collated into a report by the ACT Children and Young People Death Review Committee.

Almost half of all deaths were neonatal deaths - those occurring in the first 28 days of life. Of the 47 neonatal deaths, 70 per cent, or 33 deaths, were boys. Boys are also represented in 62 per cent of all deaths up to age 18.

The report found 155 people under 18 died in the ACT. But of these, 40 deaths were of children visiting the ACT at the time of their death - in the majority of cases, accessing ACT health services.

A further 10 deaths are still under investigation by the coroner.

The review committee was established last year to track the deaths of Canberrans under the age of 18 to identify public health risks.

Last month, the committee warned parents to stop co-sleeping with their babies, following 14 deaths over the past 10 years and a steady rise in unsafe sleeping deaths over the past few years in particular which the committee considered a public health risk.

Committee chairwoman Penny Gregory, former head of ACT Health and Community, said the committee would begin the process of analysing the five years' data to consider potential health risks to the community and come up with prevention strategies.

Because the ACT is so small and the committee was concerned about identifying any families who had lost a child, data would not be provided for individual years and future annual reports would continue to cover five-year periods. There was no discernible correlation between socio-economic status and deaths, due to Canberra's small size and homogeneous suburbs.

The report's main findings include that 62 of the 105 deaths, or 59 per cent of ACT child deaths, were males. The 70 per cent male death rate in neonatal deaths was ''broadly in line with national findings,'' Dr Gregory said.

According to community paediatrician and the committee's representative paediatrician, Sue Packer: ''It's been a long-standing observation that boys seem to be slightly more fragile and at risk than girls.

''We don't know why for certain but girls appear to have a slightly better chance of survival if they have medical conditions in the very first weeks of life.''

Neonatal deaths accounted for 47 deaths or 45 per cent of all recorded deaths. Children under a year accounted for 63 deaths or 60 per cent. Medical cause - including asthma, cancer and cardiac failure - accounted for 64 deaths or 61 per cent. External causes in 12 deaths included car accidents, suicide and drownings while 29 deaths were due to extreme prematurity.

Eighty-one deaths, or 77 per cent, occurred in a hospital, while 12 deaths occurred at home, seven occurred outside the home and five occurred at the hospice.

Six of the deaths, or 6 per cent, occurred in children identified as Aboriginal while 22 children who died, and/or their siblings, were known to known to Care and Protection Services in the three years before the death. Seven of these children were subject to intervention at the time of their death while eight children and their families were known to ACT Policing.

Dr Gregory said these statistics had been expected given national trends which saw children known to authorities at a greater risk of death.

''It is devastating but not surprising that we see this over-representation. Being known to authorities is a signal something has gone wrong and we need to examine family supports and the role of the community in assisting these vulnerable children.

''It is not so much what happens when the pieces get picked up after a tragedy we need to consider but what is happening with early intervention and support services before the pieces fall apart.''

It was recently revealed Care and Protection received 11 warnings of dangers to a three-month-old Canberra girl before she was found dead in her cot in September.

The cause of death remains unclear and police are preparing a report for the coroner.

The older siblings have since been moved into the care of relatives.

An ACT Auditor-General's report, published in March, found the Community Services Directorate needed a better system of monitoring children who demanded further consideration after being reported.