Table 1 Baseline maternal characteristics

Mean (SD) Age at Start of Spell (years)

32.04 (5.53)

Mean (SD) Height (cm)

163.78 (6.87)

Mean (SD) Weight (kg)

68.24 (14.66)

Median (IQR) BMI

24.35 (6.45)

Mean (SD) Glucose Level (mmol/L) 0 min

4.35 (0.52)

Mean (SD) Glucose Level (mmol/L) 120 min

5.84 (1.54)

Mean (SD) Estimated Total Blood Loss (ml)

550 (422)

Mean (SD) Gestational Period (weeks)

38.97 (1.99)

Median (IQR) Index of Multiple Deprivation Rank

12,183 (11,361)

Median (IQR) Index of Multiple Deprivation Decile

4(3)