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The goal of this study is to explore the effects of a \u201cShared Decision Making Assistant\u201d smartphone application on the decision-making of informed patients with Primary Liver Cancer (PLC) in China.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>In this quasi-experimental study\n, 180 PLC patients who knew their real diagnoses in the Eastern Hepatobiliary Surgery Hospital, Naval Medical University, Shanghai, China, from April to December 2020 were randomly assigned to a control group and an intervention group. Patients in the intervention group had an access to the \u201cShared Decision Making Assistant\u201d application in decision-making, which included primary liver cancer treatment knowledge, decision aids path, continuing nursing care video clips, latest information browsing and interactive platforms. The study used decision conflict scores to evaluate the primary outcome, and the data of decision preparation, decision self-efficacy, decision satisfaction and regret, and knowledge of PLC treatment for secondary outcomes. Then, the data were entered into the SPSS 22.0 software and were analyzed by descriptive statistics, Chi-square, independent t-test, paired t-test, and Mann\u2013Whitney tests.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Informed PLC patients in the intervention group (\u201cSDM Assistant\u201d group) had significantly lower decision conflict scores than those in the control group. (\u201cSDM Assistant\u201d group: 16.89\u2009\u00b1\u20098.80 vs. control group: 26.75\u2009\u00b1\u20099.79, <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). Meanwhile, the decision preparation score (80.73\u2009\u00b1\u20098.16), decision self-efficacy score (87.75\u2009\u00b1\u20096.87), decision satisfaction score (25.68\u2009\u00b1\u20092.10) and knowledge of PLC treatment score (14.52\u2009\u00b1\u20091.91) of the intervention group were significantly higher than those of the control group patients (<jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05) at the end of the study. However, the scores of \u201cregret of decision making\u201d between the two groups had no statistical significance after 3\u00a0months (<jats:italic>P<\/jats:italic>\u2009&gt;\u20090.05).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Access to the \u201cShared Decision Making Assistant\u201d enhanced the PLC patients\u2019 performance and improved their quality of decision making in the areas of decision conflict, decision preparation, decision self-efficacy, knowledge of PLC treatment and satisfaction. Therefore, we recommend promoting and updating the \u201cShared Decision Making Assistant\u201d in clinical employment and future studies.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12911-022-01883-w","type":"journal-article","created":{"date-parts":[[2022,5,31]],"date-time":"2022-05-31T07:05:37Z","timestamp":1653980737000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Effects of a smartphone application named \u201cShared Decision Making Assistant\u201d for informed patients with primary liver cancer in decision-making in China: a quasi-experimental study"],"prefix":"10.1186","volume":"22","author":[{"given":"Sitong","family":"Wang","sequence":"first","affiliation":[]},{"given":"Qingwen","family":"Lu","sequence":"additional","affiliation":[]},{"given":"Zhixia","family":"Ye","sequence":"additional","affiliation":[]},{"given":"Fang","family":"Liu","sequence":"additional","affiliation":[]},{"given":"Ning","family":"Yang","sequence":"additional","affiliation":[]},{"given":"Zeya","family":"Pan","sequence":"additional","affiliation":[]},{"given":"Yu","family":"Li","sequence":"additional","affiliation":[]},{"given":"Li","family":"Li","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2022,5,31]]},"reference":[{"issue":"15","key":"1883_CR1","doi-asserted-by":"publisher","first-page":"1450","DOI":"10.1056\/NEJMra1713263","volume":"380","author":"A Villanueva","year":"2019","unstructured":"Villanueva A. 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