1.1. Figure 1 shows the usage of different forms of contraception in four groups of 100 women.

Each group used a different form of contraception.

Figure 1

Evaluate the effectiveness of the different methods of contraception shown in Figure 1.

1.2. Explain which method(s) of contraception would help to prevent the spread of sexually transmitted diseases. 

1.3. Explain how contraceptive pills can be used to reduce fertility.

1.4. Intra-Uterine Devices (IUDs) are devices that are placed into the uterus to help prevent pregnancy.

There are two main types, plastic IUDs that release progesterone and copper IUDs. Figure 2 shows how many days menstrual bleeding occurs post implantation with either copper or progesterone-containing IUDs.

Figure 2

Explain why there are differences in the number of days of menstrual bleeding between the two devices.