JMIR
J Med Internet Res
Journal of Medical Internet Research
1438-8871
JMIR Publications
Toronto, Canada
v19i12e347
29258059
10.2196/jmir.8099
Corrigenda and Addenda
Corrigenda and Addenda
Correction: Seeing the “Big” Picture: Big Data Methods for Exploring Relationships Between Usage, Language, and Outcome in Internet Intervention Data
Eysenbach
Gunther
Carpenter
Jordan
PhD
1
http://orcid.org/0000-0001-6918-6286
Crutchley
Patrick
BSE
1
2
http://orcid.org/0000-0003-4400-9309
Zilca
Ran D
MSc
3
http://orcid.org/0000-0001-8521-5438
Schwartz
H Andrew
PhD
2
4
http://orcid.org/0000-0002-6383-3339
Smith
Laura K
BA
1
http://orcid.org/0000-0002-4020-5524
Cobb
Angela M
BA
5
http://orcid.org/0000-0001-5442-558X
Parks
Acacia C
PhD
3
5
Department of Psychology
Hiram College
Bates Hall 215
11715 Garfield Road
Hiram, OH, 44234
United States
1 330 569 5229
1 330 569 5398
parksac@hiram.edu
http://orcid.org/0000-0001-6643-0116
1
Positive Psychology Center
University of Pennsylvania
Philadelphia, PA
United States
2
Penn Medicine Social Media and Health Innovation Lab, Penn Medicine Center for Health Care Innovation
University of Pennsylvania
Philadelphia, PA
United States
3
Happify
New York, NY
United States
4
Computer Science
Stony Brook University
Stony Brook, NY
United States
5
Department of Psychology
Hiram College
Hiram, OH
United States
Corresponding Author: Acacia C Parks
parksac@hiram.edu
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©Jordan Carpenter, Patrick Crutchley, Ran D Zilca, H Andrew Schwartz, Laura K Smith, Angela M Cobb, Acacia C Parks. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 19.12.2017.
2017
This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.
http://www.jmir.org/2016/8/e241/
The authors of, “Seeing the 'Big' Picture: Big Data Methods for Exploring Relationships Between Usage, Language, and Outcome in Internet Intervention Data” (J Med Internet Res 2016;18(8):e241) would like to make changes to the following areas.
In the results section of the abstract
The first sentence of the results subheading in the abstract “On a measure of positive emotion, the average user improved 1.38 points per week (SE 0.01, t122,455=113.60, P<.001, 95% CI 1.36–1.41), about a 11% increase over 8 weeks.” This should be replaced with: “On a measure of positive emotion, the average user improved 1.38 points per week (SE 0.01, t122,455=113.60, P<.001, 95% CI 1.36–1.41), about a 27% increase over 8 weeks.”
The third sentence in the results subheading of the abstract “This estimate predicted that a given user would report positive emotion 1.26 points (or 1.26%) higher after a 2-week period when they used Happify daily than during a week when they didn’t use it at all.” This should be replaced with: “This estimate predicted that a given user would report positive emotion 1.26 points higher after a 2-week period when they used Happify daily than during a week when they didn’t use it at all.”
In the Study 1 Results section
The last sentence in the second paragraph in the Study 1 Results section “This suggests an average overall improvement of 11.04 points, or about 11%, over the course of 8 weeks.” This should be replaced with: “This suggests an average overall improvement of 11.04 points, or about 27%, over the course of 8 weeks.”
The second sentence in the fourth paragraph in the Study 1 Results section “This estimate predicted that a given user would report positive emotion that would be 1.26 points (or 1.26%) higher after a 2-week period when they used Happify daily than after a week when they didn’t use it at all.” This should be replaced with: “This estimate predicted that a given user would report positive emotion that would be 1.26 points higher after a 2-week period when they used Happify daily than after a week when they didn’t use it at all.”
In the general Discussion section
The last sentence in the second paragraph in the Study 1 Results section “This suggests an average overall improvement of 11.04 points, or about 11%, over the course of 8 weeks.” This should be replaced with: “This suggests an average overall improvement of 11.04 points, or about 27%, over the course of 8 weeks.”
While the errors do not impact the general findings of the original publication, remediation of these errors will add clarity to the interpretation of the results, as well as accurately represent the magnitude of the results.
The corrected article will appear in the online version of the paper on the JMIR website on December 19, 2017, together with the publication of this correction notice. Because this was made after submission to PubMed Central, the corrected article also has been re-submitted to PubMed Central.