Table 2.

Proportion of patients referred with respect to treatment received and intervention status of the practice. Denominator varies according to number of cases prescribed that particular treatment—for example, in intervention group of 163 women with menorrhagia who were not prescribed tranexamic acid, 26 were referred. For each treatment number of referrals with respect to intervention or control grouping is constant. Values are proportions (percentages) of women

Treatments	Intervention	Control
No tranexamic acid	26/163 (16)	32/121 (26)
Tranexamic acid only	23/132 (17)	13/42 (31)
Tranexamic acid plus other treatments	27/82 (33)	9/23 (39)
Total referrals/total cases	76/377 (20)	54/186 (29)
No mefenamic acid	52/270 (19)	34/120 (28)
Mefenamic acid only	4/42 (10)	8/44 (18)
Mefenamic acid plus other treatments	20/65 (31)	12/22 (55)
Total referrals/total cases	76/377 (20)	54/186 (29)
No norethisterone	49/293 (17)	36/142 (25)
Norethisterone only	9/30 (30)	9/24 (37)
Norethisterone plus other treatments	18/54 (33)	9/20 (45)
Total referrals/total cases	76/377 (20)	54/186 (29)