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Table 4 Single factor ANOVA test of prognosis based on ring shape:

From: Vascular ring: prenatal diagnosis and prognostic management based on sequential cross-sectional scanning by ultrasound

The shape of the vascular ring

ANOVA

“入”

“O”

P = 0.000

“U”

P = 0.000

“C”

P = 0.000

“O”

“U”

P = 0.000

“C”

P = 0.000

“U”

“C”

P = 0.002