The goal of this clinical trial is to develop and evaluate an Artificial Intelligence Assisted Prehabilitation Program (AI APP) for returning to work and cost-effectiveness analysis in patients with oral cancer (OC). The main questions it aims to answer are: * What kinds of needs are related to returning to work (RTW) in patients with OC from diagnosis to survival that we can incorporate into the development of AI APP to assist this population ? * How is the effect of the AI APP that based on findings from the first question for patients with OC on physical and psychological distress, fear of recurrence, self-efficacy in coping with cancer, communication, motor function, quality of life, and RTW? * How is the effect of the RTW AI prediction model to identify high-risk groups ? And how is the comprehensive cost effectiveness of benefits and quality of life of the AI APP for OC population? Researchers will compare patients without using AI APP to see if the AI APP works to assist with coping physical and psychological distress, communication, motor function, quality of life, and RTW issues for individuals with OC? Participants will: * Be asked to fulfill a structural questionnaire, or engage in a semi-structured one-by-one interview or a focus group to assess their physical, psychological, and social support needs in the first stage. * Be invited to participant the pilot testing of AI APP in the second stage. * Be provided and trained by 3-month AI APP for 3 months or cared as usual in the third stage. * Complete a structural questionnaire and follow up one year, including the baseline (before using the AI app) and at 1-2 weeks, 3 months, 6 months, 9 months, and 12 months after the baseline. * Engage in one-by-one interview or a focus group to assess user experiences of the AI APP.
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Returning to work (RTW)
Timeframe: Baseline (before surgery), 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of symptom severity on Symptom Severity Scale (SSS) questionnaire
Timeframe: Baseline (before surgery), 1-2 weeks after surgery, 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of distress on Distress Thermometer (DT) questionnaire
Timeframe: Baseline (before surgery), 1-2 weeks after surgery, 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of fear of recurrence on the Fear of Cancer Recurrence Inventory-Short Form (FCRI-SF) questionnaire
Timeframe: Baseline (before surgery), 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change from baseline in maximal mouth opening
Timeframe: Baseline (before surgery), 1-2 weeks after surgery, 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change from baseline in shoulder joint range of motion
Timeframe: Baseline (before surgery), 1-2 weeks after surgery, 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of self efficacy on the Cancer Behavior Inventory (CBI) questionnaire
Timeframe: Baseline (before surgery), 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of health engagement on the Patient Health Engagement (PHE) questionnaire
Timeframe: Baseline (before surgery), 1-2 weeks after surgery, 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of perceived voice handicap on the Voice Handicap Index-10 (VHI-10) questionnaire
Timeframe: Baseline (before surgery), 1-2 weeks after surgery, 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of communication quality on the Communication Quality Assessment questionnaire
Timeframe: Baseline (before surgery), 1-2 weeks after surgery, 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.
Change of the level of health-related quality of life on the Functional Assessment of Cancer Therapy (FACT-G7) and The EuroQol instrument (EQ-5D) questionnaire
Timeframe: Baseline (before surgery), 3 months after surgery, 6 months after surgery, 9 months after surgery, and 12 months after surgery.