Table 5.

Effect of Menopausal Status on Median PGE₂ Concentrations in ng/mL in Plasma¹

	Before (N)	After (N)	Washout (N)	P value
				Before v. After (N)	After v. Washout (N)	Before v. Washout (N)
Menopausal Population
High risk
Pre-	0.37 (11)	0.37 (11)	0.45 (10)	0.77 (11)	0.61 (10)	0.77 (10)
Post-	0.28 (15)	0.19 (15)	0.18 (13)	0.64 (15)	0.59 (13)	0.45 (13)
P value	0.53	0.47	0.04
Cancer
Pre-	0.25 (3)	0.35 (3)	NA	0.99 (3)
Post-	0.78 (9)	0.28 (9)	NA	0.01 (9)
P value	0.27	0.58

1: Abbreviations: N: sample size; NA: not applicable