Table 1.

Terms of target themes.

Themes	Termsa
Economic	unemployed, economy, mortgage, layoff, recession, stimulus, evict, enough money, more money, pay the bill, owe, afford, wage, job, eviction, income, rent, credit, salary, bills, laid, jobless, savings, lost job, fulltime, debt, financial, paycheck
Social	bullying, loneliness, emptiness, quarantine, alone, lonely, lockdown, distancing, insecurities, no one cares, trapped, feel ignored, single, can’t see my, ignoring me
Domestic	domestic violence, abuse, yelling, fighting, single mom, single dad, single parent, hit me, slapped me, divorced, abusive, cheating, separation, toxic, abused, custody battles
Educational	exam, assignment, online classes, school closures, distance learning grade, homework, courses, school, presentation, classroom, test, virtual learning, hybrid learning, remote learning, online meeting, Zoom, Microsoft Teams, Google classroom, virtual classrooms
Substance	smoke, smoked, drink, snort, drugs, smoking, alcohol, nicotine, caffeine, beer, substance, ketamine, tablets, valium, opioid, vodka, whiskey, whisky, meth, addiction, rehab, relapse, overdose
Suicide	commit suicide, jump off a bridge, I want to overdose, will overdose, thinking about overdose, kill myself, killing myself, hang myself, hanging myself, cut myself, cutting myself, hurt myself, hurting myself, want to die, wanna die, do not wake up, do not want to be alive, wish it would all end, done with living, want it to end, all ends tonight, live anymore, living anymore, life anymore, be dead, end my life, death, hopeless, shoot me, kill me, suicide, no point, intrusive
COVID-19	corona, coronavirus, covid, covid-19, epidemic, infect, lockdown, pandemic, quarantine, viral, virus, mask, ventilator, symptomatic, incubation, transmission, immune, vaccine, national emergency, flatten

^aItalicized words indicate extensions made using the top-ranked words from the Word2Vec pretraining model for the key terms.