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Table 2 Incidence and severity of plagiocephaly and brachycephaly in preterm infants

From: Prevalence of positional skull deformities in 530 premature infants with a corrected age of up to 6 months: a multicenter study

 MildModerateSevereTotal
Plagiocephaly
 DD value0.537 ± 0.1921.030 ± 0.0471.384 ± 0.160 
N2461510271
Incidence rate46.4%2.8%1.9%51.1%
Proportion90.8%5.5%3.7%100%
Brachycephaly
 CI value0.860 ± 0.0220.934 ± 0.0261.048 ± 0.092 
N24218128451
Incidence rate45.7%34.1%5.3%85.1%
Proportion53.7%40.1%6.2%100%
Dolichocephaly
 CI value0.752 ± 0.0060.728 ± 0.005 
N124016
Incidence rate2.3%0.7%03.0%
Proportion75.0%25.0%0100%
  1. CI, cranial index; DD, diagonal difference; N, number of cases