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System4Life: A Rewards System for Heart Healthy Living Department of Electrical and Systems Engineering Abstract Heart disease is the leading cause of.

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Presentation on theme: "System4Life: A Rewards System for Heart Healthy Living Department of Electrical and Systems Engineering Abstract Heart disease is the leading cause of."— Presentation transcript:

1 System4Life: A Rewards System for Heart Healthy Living Department of Electrical and Systems Engineering Abstract Heart disease is the leading cause of death in the United States and affects over 80 million Americans every year [1]. Points4Life [2] is a developing program that aims to lower this statistic. Pending funding by the American Heart Association, Points4Life will create an incentive rewards program that intends to improve heart health through positive reinforcement strategies. Participants will earn points for buying heart- healthy products and services, which are then redeemable for discounts on more heart-healthy products and services offered by vendors and health-insurance companies involved with the program. Points4Life needs a method for controlling the different players in the program as well as tracking progress to ensure that the program functions at an appropriate level. System4Life develops an approach to handle the interactions between participants, vendors, health- insurance companies, and health-care providers, as well as point allocation and distribution. Interactions between these stakeholders are modeled by flow charts and sample web pages. Additionally, System4Life contains two large subsystems: Point Calculator and Point Tracker. The Point Calculator assigns point values to food items based on nutritional factors, such as trans-fat content. This point allocation is one of the main challenges in the system. Point Tracker provides the system with a method for tracking individual, as well as group, progress through member accounts, which is a key metric in measuring the success of the project. System4Life has provided assistance in the development of the Points4Life design. At this time, much of the System4Life work is being incorporated into a proposal for the implementation of Points4Life. [1] American Heart Association Cardiovascular Disease Statistics. (n.d.) Retrieved October 9, 2009, from [2] Interview with Larry Starr, PhD, Director, Organization Dynamics Graduate Studies, University of Pennsylvania, September 21, By: Carolyn Mooney and Laura Putzakulish Advised By: Dr. Peter Scott and Walter Sobkiw Group 19 Presentation Times: April 22 nd 11:30, 1:30, 2:00, 2:30 Point Calculator: Designing Point Values Based on Nutritional Factors Takes in nutritional information of a product and outputs a point value Uses the above series of equations that relate nutritional information to risk factors Sums the above equations and subtracts from ten to determine point value Figure 4: Function Flow of the Point Calculator- Describes Inputs, Outputs and Functionality of the System On Product List? Scale based on risk factors’ effect on heart disease Request relevant nutritional factors Weigh nutritional factor for effect on risk factors Sum effects on BP, cholesterol, and weight Output point value for food Save product on food list Product Name w/ Brand User Input: Nutritional Factors/ Quantities YES NO Point Tracker Provides a set of functional flows assisted by a prototype web page that determines how user points will be monitored Parses input stream into information, divvying points between account users Stores weekly and monthly totals for each user Displays sample point totals in both graph and chart form on the prototype web page Routes temporarily to the Point Calculator in cases where the product is not on the Product List Figure 2: Function Flow of the Point Tracker - Describes Inputs, Outputs and Functionality of the System User signed in for access On Product List? Graph month and week tracker Input to point calculator Store input stream in account tracker Add points to weekly total Find account number in database Add points to user account Input List YES NO Point total List of items bought by date Display to user Risk Factors: Nutritional Information: Blood Pressure WeightCholesterol Sugar Trans Fat Saturated Fat Fiber Protein Sodium Heart Disease System4Life Participants Vendors Insurance Doctors Account Information Rewards Funding Advertising Product List Consumer Data Account Information Participant Information Account Information Decision to Redeem Rewards Point Tracking Point Calculator Account Information Rewards Funding Policy Holders’ Point Advertising Context Diagram Defines stakeholders and their requirements Defines interactions that must be managed via web design Accounts and Rewards Management Developed prototype web pages and functional flows for both Account Management and Redeeming Rewards Divides all stakeholders, including participants, health insurance companies, health care providers and vendors, giving each type of user individual functionalities Gives each user different Redeeming Reward capabilities Allows participants to redeem points that they have earned in the program Provides health insurance companies and vendors space to upload reward options for participants Figure 1: Context Diagram Describing Stakeholder Interactions with System4Life Causal Relationships Uses Analytic Hierarchy Process to develop relationships between risk factors and nutritional information Assisted by Dr. Stella Volpe (nutritionist at the University of Pennsylvania), pair wise comparisons were used to determine weights and relationships on all factors. Develops a matrix whose eigenvalues yield the coefficient to the corresponding equations: Blood Pressure Points= λ 1 Sodium_Points + λ 2 Sugar_Points + λ 3 TransFat_Points + λ 4 SaturatedFat_Points Cholesterol Points= λ 1 Cholesterol_Points + λ 2 Protein_Points + λ 3 Fiber_Points Weight Points= λ 1 Sugar_Points + λ 2 TransFat_Points + λ 3 SaturatedFat_Points Figure 3: Hierarchy Relationships for Developing Calculator Coefficients Results and Examples Modeled food products and their point values Prints out product, nutritional information, point value and totals Provides higher point values for eating healthy than eating unhealthy Sums meals based on entered servings of each item Calculates score of new product and adds to product list (when given inputs) Figure 5: Example Input Method to Point Calculator Figure 6: Example of a Healthy Meal and Point Total Figure 7: Example of a Less Healthy Meal and Point Total


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