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Yolk sac diameter ranges according to demographic data in the first trimester scan.
| Demographic data | Yolk sac <2mm (n=6) | Yolk sac 2-5mm (n=87) | Yolk sac >5mm (n=27) | ANOVA | p-value |
|---|---|---|---|---|---|
|
Maternal age
(years) Mean±SD Range |
34.33±4.46 30-42 |
26.28±5.06 18-39 |
28.93±4.81 20-35 |
9.265 | <0.001** |
| Parity Median (IQR) ¥ Range |
2 (1) 1-3 |
2 (2) 0-4 |
2 (2) 0-5 |
0.889# | 0.414 |
| Body mass
index Mean±SD Range |
25.13±4.64 19.9-30 |
25.49±2.89 19-30 |
26.77±2.85 19-30 |
2.030 | 0.136 |
