5
MelbeaGold does not prevent the ovary from creating an egg every month
(
ovulation
).
In the MelbeaGold wire, the precious metal gold holds particles together
like mortar holds bricks together in the wall of a building. Therefore, wires
made of this alloy do not fracture during use but exert their effects intensively
and evenly over the course of their lifetime as opposed to traditional coils
containing only copper.
3.2. How effective is the MelbeaGold product?
Table 1 presents the chance of pregnancy in the case of women using various
methods of contraception with the help of the so-called
Pearl Index
(PI).
With the Pearl Index, we can assess how effective various forms of
contraception are and what the chance of avoiding pregnancy is (
The PI
shows what chance of pregnancy is if 100 women use the same method
over the course of 12 months
).
The table contains the contraceptive methods similar in terms of effectiveness.
The most effective methods can be found at the end/bottom of the table.
The square found at the beginning/top of the table shows the chance of
pregnancy in the case of women who do not use contraceptive methods/
devices and are actively trying to become pregnant.
The Pearl Index value of intercourse without protection is 85 (
that is out of
100 women, 85 becomes pregnant
).
In comparison, in the case of the typical use of copper-containing IUDs
(
such as the MelbeaGold product
), which fall in the category of methods,
the Pearl Index value is 0.8. This means that in the first year, out of 100
women, less than 1 become pregnant.
Table No. 1 – Effectiveness of various contraceptive methods and the
associated risk of pregnancy
Name of
method/device
Percentage of cases where
pregnancy occurs
Over the course of 1 year *
In the case of
typical use
In the case of
perfect
use
Women not using contraceptive methods 85.00 85.00
Interrupted intercourse 27.00 4.00
Natural methods of contraception 25.00 4.00
Diaphragm (plastic cap
placed on the cervix)
In women who
have given birth
32.00 26.00
In women who
have not given birth
16.00 9.00
Spermicides 19.00 18.00
Condom
female
21.00 5.00
male
15.00 2.00
Contraceptive patch 8.00 0.30
Pills (combined, oestrogen-free) 8.00 0.30
Vaginal ring (containing hormones) 8.00 0.30
Hormone injection 3.00 0.30
Copper-containing intrauterine devices (IUD) 0.80 0.20
Female sterilisation (tubal ligation) 0.50 0.50
Hormone-containing intrauterine devices (IUD) 0.20 0.20
Male sterilisation (vasectomy) 0.15 0.10
Hormone implant 0.05 0.05
* For easier comparison, we displayed whole numbers with two decimal
places as well.
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