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Table 4 Perinatal features by specific chromosomal abnormalities

From: Chromosomal abnormalities: subgroup analysis by maternal age and perinatal features in zhejiang province of China, 2011–2015

Features T21 (n = 689) T18 (n = 53) T13 (n = 7) Sex-related (n = 48) Structural abnormality (n = 14) Total (n = 811)
Fatality (%) 535(77.65) 51(96.23) 6(85.71) 44(91.67) 11(78.57) 647(79.78)
Stillbirths (≥20 weeks GA %) 514(74.60) 47(88.68) 6(85.71) 42(87.50) 11(78.57) 620(76.45)
Multiple anomalies 64(9.28) 5(9.43) 0 0 0 69(8.50)
Congenital heart anomalies 57(8.27) 1(1.89) 0 0 0 57(7.02)