BVS

COCP ¹

IUD²

CON³

RYTH⁴

COCP + CON⁵

before

N

3 months

BVS (n)

before

N

3 months

BVS (n)

before

N

3 months

BVS (n)

before

N

3 months

BVS (n)

before

N

3 months

BVS (n)

I

-

-

-

-

-

-

-

-

-

-

II

-

3

-

-

-

-

-

-

-

-

III

-

-

-

-

-

-

-

-

-

-

IV

-

1

-

-

-

-

-

-

-

-

V

6

2

(1/2)^*

-

-

-

-

1^**

-

-

-

total

6

-

-

-

-

-

1

-

-

-