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Table 3 CI, DD, and incidence of PD in preterm infants with different gestational ages at birth

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

GroupNPlagiocephalyBrachycephalyDolichocephalyDDCI
N%N%N%
W < 32 weeks1378058.4%12992.6%21.5%0.516 ± 0.3630.885 ± 0.060
32w ≤ W ≤ 34w21410549.1%17783.7%83.7%0.437 ± 0.346a0.882 ± 0.067a
W > 34 weeks1798648.0%14581.0%63.4%0.387 ± 0.305ab0.875 ± 0.066ab
  1. a: p < 0.05, compared with the < 32-week group; b: p < 0.05, compared with the 32–34-week group
  2. CI, cranial index; DD, diagonal difference; N, number of cases; PD, positional deformity; W, Gestational week