If the client chooses the method, more than usual follow-up may be needed. WHO 3 Should not use the method unless a doctor or nurse makes a clinical judgement that the client can safely use it. Theoretical or proven risks usually outweigh the advantages of the method. Method of last choice, for which regular monitoring will be needed. WHO 4 Should not use the method.
Condition represents an unacceptable health risk if method is used.
The table below shows the number of the WHO category, as recommended by the working group meetings, for each condition and each major family planning method. The scientific group meetings classified each condition both as it affects initiating a method and, if a condition develops during use of a method, as it affects continuation. In most but not all instances, conditions were classified the same for initiation and for continuation. The table below reports initiation criteria only. WHO Categories for Female Sterilization and Vasectomy No medical conditions rule out female sterilization or vasectomy.