Table 3. Classification of samples on histopathological review.

Histological Feature	Normal (n = 18)			Reduced Fetal Movements (n = 36)			p value
	No samples	1–2 samples	All samples	No samples	1–2 samples	All samples
Infarction	18 (100)	0 (0)	0 (0)	25 (69)	11 (31)	0 (0)	0.01
Excessive Syncytial Knots	8 (45)	6 (33)	4 (22)	0 (0)	10 (28)	26 (72)	<0.0001
Distal Villous Hypoplasia	11 (61)	5 (28)	2 (11)	13 (36)	18 (50)	5 (14)	0.24
Villous Immaturity	16 (89)	2 (11)	0 (0)	31 (86)	2 (6)	3 (8)	0.56
Villitis	18 (100)	0 (0)	0 (0)	34 (94)	2 (6)	0 (0)	0.11
Other	18 (100)	0 (0)	0 (0)	32 (89)	4* (11)	0 (0)	0.28

Statistical significance tested using Fisher's exact test.

^* = 2 patchy hydropic villi and 2 chorangiosis. % of total samples is shown in brackets for each feature assessed.