"availability to participate" is a correct and usable expression in written English.
It can be used to describe one's ability or willingness to take part in an activity or event. For example, "I am pleased to confirm my availability to participate in your online training session this Saturday."
Nevertheless, quasi-experimental designs can be an approachable option for populations such as children with autism whose cognitive abilities and availability to participate and to engage in testing and activities are variable.
Indeed, the literature has shown that combining teaching with another job might reduce teachers' availability to participate in school meetings, as well as their availability to engage in additional school activities with colleagues (Maninger et al. 2011; Parham and Gordon 2011).
Children were selected based on their availability to participate.
Key Informants (KI) (n = 15) were purposively selected for interview, based on their availability to participate.
Time availability to participate in all stages of the project is another important point to be considered.
Each participating care group selected one or two practices to participate in this study, based on their availability to participate in research.
The selection was however based on a number of pre-set inclusion criteria: ease of recruitment, participant's availability, willingness to participate in the study, ability/capacity to consent to participate in the research, and good knowledge or understanding of the interview language.
The selection of participants was based on a number of pre-set inclusion criteria: ease of recruitment, participant's availability and willingness to participate in the study, and the ability/capacity of a participant to consent to participate in the research.
Past or current exposure status may influence selection into the study or into substudies, either because exposure or correlates of the exposure are related to prespecified eligibility criteria or because they influence participant availability or willingness to participate.
Based on their availability and willingness to participate we aimed at enrolling around 40 participants for both symptomatic and an aged-matched control group.
The recruitment of study participants was based on their availability and willingness to participate.
