Additionally, there was an increasing trend for major morbidity over time, from 116 of 223 infants (52.0%; 95% CI, 45.4%-58.6%) in 2010 to 1363 of 1656 infants (82.3%; 95% CI, 80.5%-84.1%) in 2019 (mean difference, 30.3%; 95% CI, 23.5%-37.1%; P < .001).(eTable 3 in the Supplement ).
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Mortality and Morbidity of Infants Born Extremely Preterm at Tertiary Medical Centers in China From 2010 to 2019.
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