OSLO - Domestic violence, mainly against women and children, kills far more people than wars and is an often overlooked scourge that costs the world economy more than $8 trillion a year, experts said on Tuesday.
The study, which its authors said was a first attempt to estimate the global costs of violence, urged the United Nations to pay more attention to abuse at home.
“For every civil war battlefield death, roughly nine people . . . are killed in inter-personal disputes,” Anke Hoeffler of Oxford University and James Fearon of Stanford University wrote in the report.
From domestic disputes to wars, they estimated that all violence worldwide costs $9.5 trillion a year, mainly in lost economic output, equivalent to 11.2 percent of the world’s gross domestic product.
In recent years, about 20 to 25 nations have suffered civil wars, devastating many economies and costing $170 billion a year. Homicides, mainly of men unrelated to domestic disputes, cost $650 billion.
But those figures were dwarfed by the $8 trillion annual cost of domestic violence, mostly against women and children.
The study said about 290 million children suffer violent discipline at home, according to estimates based on data from the United Nations Children’s Fund (UNICEF).
Based on estimated costs, ranging from injuries to child welfare services, the study estimated that nonfatal child abuse saps 1.9 percent of GDP in high-income nations and up to 19 percent of GDP in sub-Saharan Africa, where severe discipline is common.
Bjorn Lomborg, head of the Copenhagen Consensus Center, which commissioned the report, said household violence is often overlooked, just as car crashes attract less attention than plane crashes even though many more die in road accidents.
“This is not just about saying this is a big problem,” he said. “It’s a way to start finding smart solutions.” The center draws on work by more than 50 economists, including three Nobel Prize winners, and looks at cost-effective ways to fight everything from climate change to malaria.
The study is meant to help the United Nations design targets for 2030 to succeed Millennium Development Goals set for 2000-15 that included curbing poverty and improving water supplies.
The new goals could include an end to severe beatings as an accepted form of discipline for children, for instance, or reducing violence against women at home.
Rodrigo Soares, a professor at the Sao Paulo School of Economics, said it is good to highlight the huge number of deaths from domestic violence, even though he said lack of data mean it is “a little over-ambitious” to estimate global costs.
The new cost estimates were based on previous U.S. research that put the average cost of a homicide at $9.1 million, including lost earnings and costs to the justice system. The study then extrapolated those costs to other countries based on their GDP — a life would be valued at $910,000 in a nation where per capita GDP is one-tenth of the U.S. level.
For nonfatal violence against women and children, the report based itself on U.S. studies estimating that violent assaults each cost about $95,000, from medical costs to losses of income.