Table.

Uterine Doppler ultrasound characteristics in 100 mothers with either low (⩽40) or high (>40) Spielberger state anxiety scores. Values are geometric means (95% confidence intervals) unless stated otherwise

	Low anxiety scores (n=85)		High anxiety scores (n=15)	P value
Mean resistance index	0.47 (0.45 to 0.49)		0.58 (0.50 to 0.67)	<0.0001
Maximum resistance index	0.51 (0.49 to 0.54)		0.63 (0.56 to 0.71)	<0.0005
No (%) with mean resistance index ⩾0.68	3 (4)		4 (27)	<0.01
No (%) with notching	4 (5)		4 (27)	<0.02