The results showed a great stabilizing effect of the intervention on caregiver burden, that is, comparing pre- and post-measurements the burden decreased very slightly in the intervention group whereas it increased very strongly in the control group. After a three-month follow-up period this effect decreased from a great to a moderate effect. There were also improvements as a result of the intervention in somatization, health-related psychological quality of life and the reaction of the informal caregivers in response to challenging behaviors of the relative with dementia. Moreover, the frequency of challenging behaviors of the affected person itself was reduced in favor of the intervention.
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