Likewise, the factor, "Caries experience" of the patient in the past, should be related to local epidemiological data. Such data, mentioned in the manual, are examples from Sweden and the UK and values for "normal" thus reflects the situation for a westernised country. If used in countries with a very different caries situation, the local values for "normal" past caries experience should therefore be used.Likewise, the factor, "Caries experience" of the patient in the past, should be related to local epidemiological data. Such data, mentioned in the manual, are examples from Sweden and the UK and values for "normal" thus reflects the situation for a westernised country. If used in countries with a very different caries situation, the local values for "normal" past caries experience should therefore be used.