Text Message Analysis Using Machine Learning to Assess Predictors of Engagement With Mobile Health Chronic Disease Prevention Programs: Content Analysis

Harry Klimis   ^{1, 2} , MBBS, BMedSci, GradCertClinEpi, PhD ;   Joel Nothman   ³ , BSc, BA, PhD ;   Di Lu   ³ , BEng ;   Chao Sun   ³ , BEng, BSc, MEng, PhD ;   N Wah Cheung   ^{1, 4, 5} , MBBS, PhD ;   Julie Redfern   ¹ , BAppSc, PhD ;   Aravinda Thiagalingam   ^{1, 2} , MB ChB, PhD, FRACP, FCSANZ ;   Clara K Chow   ^{1, 2} , MBBS, PhD

¹ Faculty of Medicine and Health, Westmead Applied Research Centre, The University of Sydney, Westmead, Australia

² Department of Cardiology, Westmead Hospital, Westmead, Australia

³ Sydney Informatics Hub, The University of Sydney, Camperdown, Australia

⁴ Department of Endocrinology, Westmead Hospital, Westmead, Australia

⁵ Western Sydney Integrated Care Program, Sydney, Australia