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Table 1 Structural topic model results from 266,840 documents, March 11 2020 - December 14 2020, including the topic proportion and the top 10 words associated with each topic

From: COVID-19 vaccine perceptions in the initial phases of US vaccine roll-out: an observational study on reddit

Expected Topic Proportions

Topics Title

Top 10 words

0.1036

Severity of COVID-19

die, risk, life, normal, live, sick, yes, stop, stay, serious

0.0941

Hope for a swift end to the pandemic

long, term, hope, safe, next, available, wait, shot, pretty, rush

0.0861

Suspicion of science and mainstream media

believe, anti, tell, real, science, liter, bad, media, cure, trust

0.0796

Evidence based COVID-19 discussion

read, fact, understand, inform, clear, true, person, reason, post, evidence

0.0702

COVID-19 transmission rates and patterns

spread, population, herd, high, risk, rate, number, reduce, hospitalization, mortality

0.0633

Effect of the virus on the human body

common, system, response, human, influenza, body, cold, mutate, strain, similar

0.0577

Impact of pandemic on communities and hospitals

home, school, family, care, person, stay, live, learn, hospital, help

0.0523

Global effects of pandemic

world, country, public, global, travel, economy, social, govern, open, state

0.0500

COVID-19 vaccine trials and developments

data, phase, trial, clinic, safety, studies, drug, efficacy, severe, receive

0.0478

COVID-19 statistics

death, million, rate, dead, season, die, total, number, second, near

0.0381

Economy and markets

market, companies, stock, product, industry, supply, price, sell, demand, billion

0.0376

Federal policies

trump, president, nation, state, elect, administration, federal, house, unit, response

0.0359

Government aid and expenses

govern, money, free, pay, business, cost, spend, economy, system, support

0.0325

Long term effects of COVID-19 and related diseases

medical, damage, cancer, doctor, heart, polio, measles, harm, medicine, child, blood

0.0310

Black Lives Matter protests

game, watch, video, police, fire, sport, street, post, show, red

0.0309

COVID-19 vaccine conspiracy theories and misinformation

bill, world, power, human, war, russia, mark, control, chip, conspiracy

0.0294

COVID-19 research

research, link, studies, found, scientific, respiratory, science, paper, associate, article

0.0291

Masks and social distancing

wear, mask, social, protect, spread, face, public, hand, person, distance

0.0160

Racism on social media

chance, please, remember, pass, remove, black, message, thank, stick, attend

0.0148

Trump’s leadership

march, trump, perfect, control, disappear, march, anybody, fine, false, great

  1. Note: The topic proportions indicated the proportion of the corpus that belongs to each topic