Table 1 Thematic Analysis (10) and Structural Topic Modelling Topics (30) Described and Organised.
Thematic Analysis | Structural Topic Modelling | ||||
|---|---|---|---|---|---|
Topic | Brief Description | Prev. | Topic | Brief Description | Prev. |
Unknown sender | Unknown who the sender is, curiosity. | 0.88% | NA | ||
Wrong recipient | Who this is, passed away, people who’ve moved. | 0.81% | Wrong recipient | Key words: PASSED AWAY, with a mix of Medicare, Medicaid, cost, insurance. Mixed valence. | 2.92% |
Help | Replies that solicit more information. | 7.01% | Sum prevalence of all sub-topics | 19.04% | |
RSV vs. flu FAQ | Most inform about receiving both RSV and flu vaccines. Some confusion about the difference between the two, inquiries. Generally positive. | 7.10% | |||
An RSV what? | Questions regarding “What is an RSV vaccine?” Many have the sentiment of not knowing what the acronym stands for. Mixed valence. | 4.64% | |||
Vaccine vagaries | Questions about the vaccine, a fair amount of person names, and action language i.e. “I will get.” Mixed valence. | 2.95% | |||
Hints of hesitation | Most suggest inquiry with words like “could,” “do we,” “really then why” or uncertainty about what to do. Generally negative. | 2.74% | |||
Help me out | Key word: NEED. Do I need a…, I need a refill, need a ride. Generally positive. | 1.61% | |||
Image related | Images not displaying, comments on images. | 0.14% | NA | ||
Stop | Indented to opt out of the communications. Misspellings. | 17.82% | Sum prevalence of all sub-topics | 14.35% | |
Complex quits | Unsubscribe keywords along with additional text. Mixed valence. | 6.32% | |||
Kind declines | Opt out messages with more varied structure. Pleasant in tone, courteous. Positive. | 4.39% | |||
Frustrated farewells | Key words: STOP, UGH. Emotions, frustration, disappointment, “come on.” Negative. | 3.63% | |||
Already vaccinated | The sender, and often other family members, have already gotten one or both shots. | 8.16% | Sum prevalence of all sub-topics | 6.12% | |
Already vaccinated (location) | Heavily focused on WHERE the RSV vaccine was obtained. Positive. | 3.96% | |||
Already vaccinated (time) | Heavily focused on WHEN the RSV vaccine was obtained. Positive. | 2.16% | |||
Will not get vaccinated | No to the vaccine and unhappy replies such as negative sentiment, swear words, etc. | 20.49% | Sum prevalence of all sub-topics | 22.80% | |
Pleading no with a side of adverse event | Refusals. Often repeated use of “no,” references to medical reasons of contraindication. Frustrated or desperate typing. Negative. | 8.05% | |||
I don’t want [something] | Something not wanted, whether the vaccine, the message, or an unrelated item/event. Negative. | 4.92% | |||
Moral disgust | Key words: extremely aggressive swear words + ETHICS. Corrupt pharma, lies, poison. Negative. | 2.95% | |||
Of God and Country | Religious messages, lack of trust in government, highly moralised anti-vaccine language. Negative. | 2.08% | |||
COVID-19 related | Key words: COVID-19. Flavour of distrust. Negative. | 2.23% | |||
Hard no | “I do not take vaccines,” “I will never…” but with a flavour of being contraindicated. Negative. | 1.34% | |||
Distrust of pharma | Accusing pharma of high prices, insufficiently researched products, and malfeasance. Negative. | 1.23% | |||
Pharmacy-related | Mentions of [pharmacy] that do not belong to the other topics. | 3.69% | NA | See topics under Help. | |
Benign | Readable and pleasant but not always tied to the intervention. | 15.14% | Sum prevalence of all sub-topics | 7.83% | |
Future intention | Key word: WILL. “I will come in,” “I will pick up,” “I will get back to you.” Mixed valence. | 3.62% | |||
Pollyanna | Key word: LOVE. “morning, babe, I love you,” “having a good day,” heartwitharrow. Positive. | 2.51% | |||
Food | Key words related to food. Grocery lists, recipes, etc. No valence. | 1.70% | |||
Actions, auto-replies, etc. | Auto-replies, actions, illegible, blank, emojis, etc. | 25.85% | Sum prevalence of all sub-topics | 26.94% | |
Corporate replies | Feature trademarks/wordmarks, product words, or repeated same emoji. No valence. | 6.50% | |||
Emojis as reactions | Key words: [emoji] to “[pharmacy]: [name]…”). Tearsofjoy, cryingface, etc. Mixed valence. | 3.35% | |||
Mostly happy emojis | Key words: LOL + emojis. Positive. | 3.17% | |||
Just nonsense | Just nonsense. No valence. | 3.08% | |||
Non-English responses | Spanish language and nonsense words. No valence. | 3.00% | |||
Emoji potpourri | Multiple different emojis. No clear theme or meaning. Mixed valence. | 2.63% | |||
Distrustful nonsense | Nonsense with a flavour of distrust. Negative. | 2.37% | |||
Semantic disintegrity | Repeated characters. No semantic integrity. No valence. | 1.82% | |||
Foreign language | French words, non-English proper names, or legible typos. No valence. | 1.02% | |||
