| Literature DB >> 32744508 |
John Ferrand1, Ryli Hockensmith1, Rebecca Fagen Houghton1, Eric R Walsh-Buhi1.
Abstract
BACKGROUND: Almost half (46%) of Americans have used a smart assistant of some kind (eg, Apple Siri), and 25% have used a stand-alone smart assistant (eg, Amazon Echo). This positions smart assistants as potentially useful modalities for retrieving health-related information; however, the accuracy of smart assistant responses lacks rigorous evaluation.Entities:
Keywords: chatbots; conversational agents; digital health; human papillomavirus; infodemiology; misinformation; smart assistants; vaccination
Mesh:
Substances:
Year: 2020 PMID: 32744508 PMCID: PMC7432152 DOI: 10.2196/19018
Source DB: PubMed Journal: J Med Internet Res ISSN: 1438-8871 Impact factor: 5.428
Figure 1Example of a video result from a query to Cortana.
Examples of accuracy and misinformation in smart assistant responses.
| Query | Accuracy | Misinformation |
| Does the HPVa vaccine work? | “In the trials that led to the approval of Gardasil and Cervarix, these vaccines were found to provide nearly 100% protection against persistent cervical infections with HPV types 16 and 18 and the cervical cell changes that these persistent infections can cause.” | N/Ab |
| Does the HPV vaccine cause autism? | “There is no link between vaccines and autism.” | “The scientific literature is now starting to fill up with case reports and studies and articles that irrefutably show that there is a connection between this vaccine (and it’s an ugly vaccine) and neurological damage.” |
| Does Gardasil work? | “Gardasil works by preventing the infection of the types of HPV that can lead to cervical cancer...” | “The Gardasil HPV vaccine has been proved to have caused the deaths of 32 women.” |
| Does Gardasil cause autism? | “There has never been a study that has shown that vaccines cause autism.” | N/A |
| Is the HPV vaccine dangerous? | “Findings from many vaccine safety monitoring systems and more than 160 studies have shown that HPV vaccines have a favorable safety profile—the body of scientific evidence overwhelmingly supports their safety.” | “Aluminum in the vaccines is toxic enough to be harmful.” |
| Is Gardasil dangerous? | “Although this information is accurate in a strictly literal sense, it is a misleading presentation of raw data that does not in itself establish a causal connection between Gardasil and the posited medical dangers.” | “The Gardasil HPV vaccine has been proved to have caused the deaths of 32 women.” |
| Who can get the HPV vaccine? | “All people ages 9 to 45 can get the HPV vaccine to protect against genital warts and/or different types of HPV that can cause cancer.” | N/A |
| Where can I get the HPV vaccine? | “The HPV vaccine is available at: Healthcare Clinic for patients aged 11-26. Walgreens Pharmacy. Ages vary by state.” | N/A |
| Does Gardasil kill? | “I cannot stress this enough, based on this report alone you can't make a determination that the vaccine caused the deaths.” | N/A |
| How much does the HPV vaccine cost? | “Each dose of the vaccine can cost about $250.” | N/A |
aHPV: human papillomavirus.
bN/A: not applicable.
Source and content characteristics of smart assistant responses.
| Variable | Value (N=103), n (%) | ||
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| Health information provider | 36 (35.0) | |
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| Federal/city/state | 25 (24.3) | |
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| Nonprofit/advocacy group | 15 (14.6) | |
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| Physician | 10 (9.7) | |
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| Other | 9 (8.7) | |
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| News/media organization | 8 (7.8) | |
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| Business | 6 (5.8) | |
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| Journalist/press | 2 (1.9) | |
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| Politician | 2 (1.9) | |
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| Health care organization | 1 (1.0) | |
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| Video | 30 (29.1) |
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| General web page | 24 (23.3) |
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| Article | 14 (13.6) |
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| FAQb site | 19 (18.4) |
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| Other | 6 (5.8) |
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| Blog post | 3 (2.9) |
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| Location/map/directions | 1 (1.0) |
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| Cancer | 77 (74.8) |
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| Vaccines and side effects | 57 (55.3) |
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| Sexual behaviors | 26 (25.2) |
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| Access to medical care | 20 (19.4) |
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| Direct impacts on loved ones | 13 (12.6) |
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| Conspiracy theories | 6 (5.8) |
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| Vaccines are ineffective | 6 (5.8) |
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| Mass media | 6 (5.8) |
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| Risk of disease is lower than risk of adverse vaccination events | 2 (1.9) |
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| Positive | 65 (63.1) |
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| Neutral | 18 (17.5) |
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| Ambiguous | 11 (10.7) |
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| Negative | 7 (6.8) |
aTotals may exceed 100% owing to the availability of multiple response options.
bFAQ: frequently asked question.
Response differences among smart assistants in terms of accuracy, evidence provided, and misinformation.
| Response quality of the smart assistants | Value, n/N (%) | Chi-square effect size (df) | ||
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| 63/103 (61.2%) |
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| Alexa | 4/6 (66.7%) | 4.558 (2) | .10 |
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| Siri | 26/36 (72.2%) | 4.558 (2) | .10 |
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| Cortana | 33/61 (54.1%) | 4.558 (2) | .10 |
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| 50/103 (48.5%) |
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| Alexa | 6/6 (100%) | 11.054 (2) | .004 |
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| Siri | 21/36 (58.3%) | 11.054 (2) | .004 |
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| Cortana | 23/61 (37.7%) | 11.054 (2) | .004 |
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| 18/103 (17.5%) |
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| Alexa | 0/6 (0%) | 7.807 (2) | .02 |
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| Siri | 2/36 (5.6%) | 7.807 (2) | .02 |
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| Cortana | 16/61 (26.2%) | 7.807 (2) | .02 |
Sentiment differences among the smart assistants.
| Smart assistant | Content sentiment | |||||||
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| Neutral (N=18) | Negative (N=7) | Ambiguous (N=11) | Positive (N=65) | Chi-square effect size (df) | |||
| Alexa (N=6), n (%) | 1 (16.7%) | 0 (0%) | 0 (0%) | 5 (83.3%) | 8.20 (6) | .22 | ||
| Siri (N=35), n (%) | 9 (25.7%) | 0 (0%) | 5 (14.3%) | 21 (60%) | 8.20 (6) | .22 | ||
| Cortana (N=60), n (%) | 8 (13.3%) | 7 (11.7%) | 6 (10%) | 39 (65%) | 8.20 (6) | .22 | ||