Mario Merialdi, one of the authors of the WHO bulletin with the latest figures and an editor of the March of Dimes study, described the report as "a first attempt to estimate the worldwide scale of the problem.
"As a first step, it is necessary to improve data on the extent of the problem," Merialdi said, adding that the WHO is improving its database on preterm birth.
Another problem is the lack of a widely accepted classification of preterm birth or glossary of terms, said Joy Lawn with the group Saving Newborn Lives/Save the Children USA.
"We need to at least adopt common definitions and agree on what is a preterm baby," said Lawn, adding that more national and regional data on the long-term health problems caused by preterm birth is needed.
The data is to be presented this week at the 4th International Conference on Birth Defects and Disabilities in the Developing World in New Delhi, the March of Dimes said.
Source-AFP
SRM