## 2 Materials and Methods
### The INSESS-COVID19 Workshops  
Originally, the project planned face-to-face workshops with the citizenship and part of it consisted in filling-in the INSESS-COVID19 questionnaire. The main advantages of such a design are:  
* Digital gap issues of vulnerable population are assisted during the workshop and successful participation is guaranteed
* The data collection time is constrained. In 2 h workshop all answers for a given BASS are collected
* Missing data is reduced.
* Misunderstanding of questions is reduced, or eliminated  
The main limitation of this design is to require coincidence in time and space and requires logistics and specific rooms offered by the BASS for the workshop celebration.  
With the circumstances of the prolonged pandemics in successive outbreaks, an on-line, delocalized in time and space, version of the workshop was activated. The contextualization of the activity was pre-recorded in videos, uploaded to web, so that each participant has to enter the web, follow the videos (10 min) and answer the questionnaire, all available in a private web area. In this modality, the properties of the workshop are:  
* No need to offer a specific room to celebrate the workshop
* No need to fix a day and time to celebrate the workshop
* Time for data collection needs to be a longer period. Extra follow-up of participants is required to guarantee the delivery of questionnaires on time
* Missing data can increase
* Misunderstanding of questions is still reduced through videos, but no interaction is available, so it might be not totally eliminated
* Specific long-term human support is required to solve the digital gap issues of vulnerable population. The BASS has to offer a person to this purpose.  
Figure 3: Technological infrastructure of INSESS-COVID19 system.  
The main aim of the mini-videos is to guarantee that all participants have the same understanding of the questions and know the main goals of the project, thus still helping to reduce both the misinterpretations of the questions.  
The project considered four workshop modalities (Figure 4):  
* INSESS-COVID19 Face-to-face Workshop (Figure 5a): All people who are participating in the workshop meet together in a site provided by the BASS. INSESS-COVID19 team join through videoconference to lead the workshop.
* INSESS-COVID19 Mixt Workshop (Figure 5b): Some participants are located in the room assigned by the BASS for workshop. Also, some participants join the workshop through videoconference. The INSESS-COVID19 team join through videoconference.
* INSESS-COVID19 Online Workshop (Figure 6a): All participants join the workshop through videoconference. INSESS-COVID19 team join by means of videoconference to lead the workshop.
* INSESS-COVID19 Free Workshop (Figure 6b): All participants do the workshop online in its own schedule and from where they prefer (home, working place, etc.). The BASS professionals send to all participants the accesses to the website and videos of the project, to be seen before starting the workshop. The workshop consists on watching the proposed videos where the project is presented and after that, answering the questionnaire.  
Other modalities: Along the data collection process, some BASS used creative mechanisms to involve citizenship into the study:  
Figure 4: Workshop modalities.  
* [PERSON] decided to organize a _quasi-face-to-face workshop_ on his own, by using the electronic materials available for the Free Workshop on the project website.
* [PERSON], convened the Culture department to hold a _quasi-face-to-face workshop_ in an open day in order to involve more citizens and provided information for 80 citizens.
* Reus was using a distributed network strategy, so each of the specialists had to found only two or three participants and a phone interview was followed to fill in the questionnaire.
* [PERSON] and the Institut de Cervello, proposed participation in INSESS-COVID19 as a volunteer activity for 4 th ESO students and they have also collaborated as agents of the project by monitoring citizen participation.