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PTSD Coach Version 3.1: A Closer Look at the Reach, Use, and Potential Impact of This Updated Mobile Health App in the General Public

PTSD Coach Version 3.1: A Closer Look at the Reach, Use, and Potential Impact of This Updated Mobile Health App in the General Public

In 2015, Owen et al [17] sought to provide an initial characterization of the reach, use, and potential impact of PTSD Coach in the general public. To do so, they examined in the wild data (ie, data from people who are using the publicly available version of the app in their everyday lives), thus enabling the assessment of naturalistic patterns of use.

Haijing Wu Hallenbeck, Beth K Jaworski, Joseph Wielgosz, Eric Kuhn, Kelly M Ramsey, Katherine Taylor, Katherine Juhasz, Pearl McGee-Vincent, Margaret-Anne Mackintosh, Jason E Owen

JMIR Ment Health 2022;9(3):e34744

Identification of Emotional Expression With Cancer Survivors: Validation of Linguistic Inquiry and Word Count

Identification of Emotional Expression With Cancer Survivors: Validation of Linguistic Inquiry and Word Count

Bantum and Owen [12] previously evaluated the validity of the LIWC 2001, demonstrating that LIWC 2001 had good sensitivity and specificity for identifying emotion; however, the positive predictive value (PPV), or precision of emotional identification, was poor. Additional work by our team with the creation of a machine learning program [13] demonstrated that a machine learning approach was not necessarily more predictive than LIWC.

Michelle O'Carroll McDonnell, Jason Edward Owen, Erin O'Carroll Bantum

JMIR Form Res 2020;4(10):e18246