The ministry’s figures do not distinguish between combatants and civilians though a recent report by the UN said the majority of verified victims over a six month period were women and children.

Israel says Hamas’s figures cannot be trusted. In August, the Israel Defense Forces (IDF) said it had “eliminated over 17,000 terrorists”, though it is unclear how it arrived at this figure. The IDF insists it only targets combatants and tries to avoid or minimise civilian casualties.

Israel is not allowing international journalists from media organisations, including the BBC, independent access to Gaza, making it difficult to verify the facts on the ground.

The team behind the latest study used a statistical method called “capture-recapture”, a technique which has been used to evaluate deaths in other conflicts.

Researchers looked at how many people turned up repeatedly in different attempts to count deaths. The level of overlap between those lists suggested that the number of deaths directly caused by traumatic injury in the conflict could be significantly higher than hospital figures published by the Ministry of Health.

Gaza’s health ministry issues updated death tolls from the war daily. It compiles the figures from deaths recorded in hospitals, deaths reported by family members, and deaths from “reliable media reports”.

The report in The Lancet estimated a death toll between 55,298–78,525 people, compared to 37,877 reported by the health ministry.

The report’s figures could be meaningfully higher or lower depending on the technical details of the analysis.

For example, identifying deaths by “traumatic injury” in each set of data could be tricky. Getting it wrong could push the study’s estimates higher or lower.

The research also said 59% of those killed for whom data on sex and age was available were women, children and the elderly.

The war in Gaza was triggered by Hamas’s attack in which about 1,200 people were killed and 251 others taken back to Gaza as hostages. Israel launched a massive military offensive on Gaza in response.

The health ministry says 46,006 people, most of them civilians, have been killed by the Israeli campaign.