Table 2.

The final inclusion and exclusion criteria using the PICO method.

PICO	Inclusion criteria	Exclusion criteria
Population	First screening: Vulnerable people (e.g. chronically ill, elderly, ethnic minority) Second screening: People with a low socioeconomic position, i.e. people with a low income or low-income countries, people with a low education attainment, people from ethnic minorities, or people from deprived countries	Studies that address the opinion or evaluation of other stakeholders, or healthcare workers specifically
Intervention	Autonomous mHealth applications that can be adopted by low SEP individuals on a mobile device (e.g. smartphone, tablet, computer) without requiring interaction with a third party (e.g. caregivers, relatives, other devices). Examples are as follows: Mental health applications Chronic disease management applications Self-monitoring applications	Medical applications focused on healthcare personnel or relatives of the low SEP individual. Interventions that are not autonomous but interact with other persons (e.g. caregivers) by, e.g. SMS, phone contact, instant messages, video calls, and social media. Studies focused on AR/VR/AI/robots Studies that focused on motion sensors or activity trackers. Feasibility-, cost-specific-, and protocol studies
Comparator	NA	NA
Outcome of interest	Factors that promote or hinder adoption. These may include (among others) psychosocial, technical, demographic, and environmental factors.	Studies that do not focus primarily on or explicitly address the factors that promote or hinder adoption.