Experiencing certain forms of violence and harassment and having low-moderate social support from any source was associated with higher prevalence of suicidal ideation. Social support from family moderated the association between experiencing certain forms of violence and harassment and suicidal ideation (p interaction = 0.01); however, even in the presence of high family social support, experiencing certain forms of violence and harassment was associated with higher prevalence of suicidal ideation.

www.cdc.gov/mmwr/volumes/73/su/su7301a7.htm

n = 1608 on this one.

Every study I’ve ever seen that looks at the link between social support and depression/suicidal thoughts in trans people shows a very clear link. Given the prevalence of transphobia in our society, this can entirely explain the increase in suicidal thoughts in trans people.