Figure 4. The VDBP concentration in the CVF significantly increased with approaching spontaneous term labour onset.

The * indicates a significant difference in VDBP concentration in the CVF between the in-labour group and groups ≥4 days from labour. The † indicates a significant difference between the 0–3 day group versus groups ≥15 days from labour onset. The ‡ indicates a significant difference between the 4–7 day group versus groups ≥15 days from labour onset. The § indicates a significant difference between the 8–14 day group versus groups ≥29 days from labour onset. The ¤ indicates a significant difference between the 15–28 day group versus groups ≥29 days from labour onset. Statistical significance was defined as P<0.05 (2-way ANOVA). The box and whisker plots represent the median and interquartile range with the 5^th and 95^th centile range. Outliers are represented by open circles.