I don’t have a great answer to this and think it’s pretty tough to capture with data. Given that, I’d probably go with something like Ajeya’s suggestion. Just asking people whether they felt welcome, whether they had any experiences that made them feel unwelcome, whether they plan to continue to engage the community and why, whether the community could have done things to make them feel more welcomed, etc. seems like the best bet.
I don’t have a great answer to this and think it’s pretty tough to capture with data. Given that, I’d probably go with something like Ajeya’s suggestion. Just asking people whether they felt welcome, whether they had any experiences that made them feel unwelcome, whether they plan to continue to engage the community and why, whether the community could have done things to make them feel more welcomed, etc. seems like the best bet.