Behavioral Problems Related to Attendance Adult Day Care Centers

Randomized controlled trial. The protocol was performed in accordance with the SPIRIT 2013 Statement and was registered in the Clinical Trials-gov (PROCENDIAS study). The CONSORT guidelines were rigorously followed in this randomized clinical trial. Information about the study, including the objectives, procedures, possible benefits and risks was provided at the beginning of the study and written informed consent, according to the general recommendations of the Declaration of Helsinki (World Medical, 2013), was obtained from each study participant.

Study Population:

The study was conducted in the municipality of Salamanca based on a list of people who attend an ADCC and whose relatives agree to participate voluntarily in the study. The reference population will be people attending ADCC and the relatives who participate in their care and who identify themselves as principal caregivers for this task.

Variables and measurement instruments The data will be collected in an interview, using the questionnaire designed for the study.

1. Outcome variables: Caregiviers: Sociodemographic information. The frequency and distress associated with disruptive behaviors was measured with the Spanish version of the disruptive behaviors sub-scale of the Revised Memory and Behavior Problems Checklist (RMBPC), an 8-item scale with answers ranging from 0 (never occurred) to 4 (occurs daily or more often), for the frequency score, and from 0 (not at all) to 4 (extremely), for the distress score. Caregivers' mental health as self-perceived by caregivers was measured using the 12-item version of the GHQ-12 (Goldberg \& Hillier, 1979). Depressive symptomatology was measured through the Center for Epidemiologic Studies Depression Scale (CES-D; Radloff, 1977), a 20-item scale. Caregiver stress and overload were measured through the short Zarit Burden Interview (short ZBI; Gort et al., 2005). Family function has been measured using the family APGAR test (Smilkstein, 1978).
2. ADCC Users:

Sociodemographic variables: age, gender, marital status and years of schooling; comorbidity (Charlson's comorbidity index). Functional capacity: basic activities of daily life (Barthel index); instrumental activities of daily living (Lawton-Brody index);

Baseline Evaluation and Follow-Up:

All ADCCs in the city were invited to participate in the study and those centres agreeing to do so sent an information letter about the project to the home of each of their users inviting them to participate in the study. Caregivers who agreed to participate reported at their centre and the centre contacted the research team. Participants received a telephone call from the research team after about 10-15 days to arrange an appointment and perform the baseline evaluation. The assessments were made either at the ADCC or at the relevant health centre. Those that met the inclusion criteria were subsequently selected. Once this phase was finished, the caregiver was assigned to the intervention group (IG) or control group (CG), in accordance with a previously randomised sequence. The assignment sequence was generated by an independent researcher using Epidat 4.2 software (Consellería de Sanidade, 2016) with a 1:2 a ratio. The selected family caregivers were informed that a weekly session of 90 minutes would be held over a period of 8 weeks in groups of 8-10 participants each. Caregivers of relatives with different pathologies were included. The same evaluation was performed for the CG and the IG at baseline and at 6 months after randomisation.