This latest study, conducted by researchers at the University of Birmingham, found that the rates of infant mortality varied by PCT from 1.4 to 10.83 deaths per 1,000 live births.
Additionally, perinatal mortality varied from 3.93 to 16.66 per 1,000 births.
A combination of deprivation, ethnicity and maternal age explained 80.5 per cent of the differences in outcome between PCTs, say the researchers.
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