0654 GMT June 18, 2019
Around 303,000 women died of complications during pregnancy or up to six weeks after giving birth in 2015 — down from 532,000 in 1990, biospace.com reported.
Officials from the World Health Organization (WHO) said the results showed 'huge progress'.
However, only nine countries hit targets set by the UN.
"This report will show that by the end of 2015 maternal mortality will have dropped by 44 percent from its levels from 1990," said Dr. Lale Say, coordinator for reproductive health and research at the WHO.
But she warned that the progress was 'uneven' — with 99 percent of deaths happening in developing countries.
While 39 countries reported 'significant progress' in reducing pregnancy-related deaths, only nine countries achieved their targets.
"Many countries with high maternal death rates will make little progress, or will fall behind, over the next 15 years if we don't improve the current number of available midwives and other health workers with midwifery skills," said Dr. Babatunde Osotimehin, executive director of the UN Population Fund.
Eastern Asia saw the greatest improvement, with maternal mortality falling from approximately 95 to 27 per 100,000 live births.
The UN now aims to reduce the global ratio to less than 70 per 100,000 by 2030.
Meanwhile women are twice as likely to die from causes related to pregnancy or childbirth in the United States than in Canada.
The United States was also one of only 13 countries to have worse rates of maternal mortality in 2015 than in 1990 — a group that also includes North Korea, Zimbabwe and Venezuela.
The United States and other developed countries are already far ahead of the target, but the US average has slipped from 12 deaths to 14 per 100,000 live births over the past 25 years, while Canada's is where it was in 1990, at seven.
Over the same period Belarus has cut its maternal death rate from 33 to four, making it one of the safest places to have a baby, just behind the world leaders — Iceland, Finland, Poland and Greece — where only three mothers die for every 100,000 births.