Among Asian countries, India continues to be the top country of birth for scientists and
engineers who have made the US their destination for key research and development, latest data has revealed.
With 950,000 out of Asia's total 2.96 million, India 2013 figure represented an 85 per cent increase from 2003, according to a new report from the National Science Foundation's National Center for Science and Engineering Statistics (NCSES).
From 2003 to 2013, the number of scientists and engineers residing in the US rose from 21.6 million to 29 million.
"An important factor in that increase over the same time period, the number of immigrant scientists and engineers went from 3.4 million to 5.2 million," the report noted.
Of the immigrant scientists and engineers in the US in 2013, 57 per cent were born in Asia while 20 per cent were born in North America (excluding the US), Central America, the Caribbean or South America.
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"While 16 per cent were born in Europe, six percent were born in Africa and less than one percent were born in Oceania.
"Immigrants went from India making up 16 percent of the science and engineering workforce to 18 per cent," the NCSES statement read.
In 2013, the latest year for which numbers are available, 63 per cent of US immigrant scientists and engineers were naturalised citizens, while 22 per cent were permanent residents and 15 per cent were temporary visa holders.
Since 2003, the number of scientists and engineers from the Philippines increased 53 per cent and the number from China, including Hong Kong and Macau, increased 34 per cent.
The NCSES report found that immigrant scientists and engineers were more likely to earn post-baccalaureate degrees than their US-born counterparts.
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In 2013, 32 percent of immigrant scientists reported their highest degree was a master's (compared to 29 per cent of US-born counterparts) and 9 per cent reported it was a doctorate (compared to 4 per cent of US-born counterparts).
"The most common broad fields of study for immigrant scientists and engineers from India in 2013 were engineering, computer and mathematical sciences, and social and related sciences," the report revealed.
Over 80 per cent of immigrant scientists and engineers were employed in 2013, the same percentage as their US-born counterparts.
Among the immigrants from India in the science and engineering workforce, the largest share (18 percent) worked in computer and mathematical sciences, while the second-largest share (eight percent) worked in engineering.
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Three occupations - life scientist, computer and mathematical scientist, and social and related scientist - saw substantial immigrant employment growth from 2003 to 2013.