Table 4 Compares the distribution frequencies of CNV fragment sizes among four groups of pregnant women (%)
From: The yield of SNP microarray analysis for fetal ultrasound cardiac abnormalities
|  | n | < 1 Mb | 1-4 Mb | ≥ 5 Mb |
|---|---|---|---|---|
Isolated CHD group | 170 | 8(4.7) | 12(7.1) | 8(4.7) |
Non-isolated CHD group | 68 | 4(5.9) | 6(8.8) | 6(8.8) |
Non-CHD group | 538 | 25(4.6) | 25(4.6) | 10(1.9) |
Control group | 1316 | 27(2.1) | 43(3.3) | 16(1.2) |
P-value |  | 0.008 | 0.030 | < 0.001 |