DATA Warehousing model for medical center

Presented by :

Aleem Alsanbani

Saleem Almaqashi

Mohammed akhtar

Ali

Data WarehouseData Warehouse

– A copy of transaction data specifically structured for querying and reporting

Data Mart– A logical subset of the complete data warehouse

OLAP (On-Line Analytic Processing)– The activity of querying and presenting text and number

data, usually with underlying multidimensional ‘cubes’ of data

Dimensional Modeling– A specific discipline for modeling data that is an

alternative to entity-relationship (E/R) modeling; usually employed in data warehouses and OLAP systems.

Data Warehouse GoalsSpeed up reportingReduce reporting load on transactional systemsMake institutional data more user-friendly and

accessible Integrate data from different source systemsEnable ‘point-in-time’ analysis and trending over

timeTo help identify and resolve data integrity issues,

either in the warehouse itself or in the source systems that collect the data

Warehouse ChallengesHigh-level support Identification of reporting needs by subject area

and organizational roleBridging the gap between reporting needs and

technical specificationsPartnerships with central and campus

administrative areasCustomer support and training

Data Warehouse Web Sites

Patient Support Web SiteMain Reporting Web SiteGeneral Operating Budget Web SitesWeb Sites Using Warehouse Extracts

– Health care Web Site– Patients register online – Patients cancel appointment online – Doctors can register online .. Etc

Large organizations build data warehouses to “analyze what has occurred within the business across time” in order to obtain “a competitive edge in the marketplace.

Many healthcare organizations see data warehousing as a way to facilitate operational efficiency and informed administrative decision making.

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EducationEducation

Data CenterHelp Desk

Desktop Support

Telephone

Server Admin

Systems Architecture

Application Development

Systems Integration

Data WarehousingDatabase

Admin

Web Services

eMail/Messaging

Network

Medical CenterMedical Center

Patient Care

Medical Center

Medical Entities Dictionary: A Central Terminology Repository

MED Structure

MedicalEntity

LaboratoryProcedure

CHEM-7PlasmaGlucose

Test

LaboratorySpecimen

PlasmaSpecimen

Substance

Sampled

Part of

Has S

pecimen

Event

LaboratoryTest

DiagnosticProcedure

Substance MeasuredGlucose

Plasma

AnatomicSubstance

Substance

BioactiveSubstance

Chemical

Carbo-hydrate

DW model for medical center

Medical centerData warehousing and architecture Medical Management System

– Patient details and registration– Consultations– Resource allocation– Pharmaceuticals management– Billing and payments– User interface conforming to usability guidelines– Database with audio/visual and past consultations– Future extensions (web, remote a/v consulting, etc)– Management reports, security levels, accounting, etc.

Description Scope

– Patient registration

– Appointments scheduling

– Billing and payments (cash, CC, insurance)

– Security of the whole system

– Web interface (proposed for future)

DescriptionAssumptions

– Patient must provide insurance details when registering.

– Advance deposit require when patient don’t have Insurance.

– Appointments can be cancelled 24 hours in advance without penalty

– Patient medical history can be viewed by concerned doctors at the hospital with approval of the patient .

Background about medical center

Office staff can perform various functions like appointment scheduling, billing, entering prescriptions, lab results, patient charts, etc. through the Web or manually .

Doctors can look up their schedules enter schedule changes, review patient charts, look at lab results and enter prescriptions.

Patients can look up appointments, cancel them, request new appointments, look up statements, enter credit card payments, look up their medications, receive notifications of their lab results and change their addresses. New patients may look up physicians by their specialty, request appointments, register themselves on line. Direct Electronic Billing avoids paper.

Patients can review statements & make payments over the internet. Pharmacists can receive notifications regarding prescriptions, request re-fills or re-work on a prescription.

Users

The Hospital Management System is mainly designed by keeping in mind all the possible users, which are:

• Doctors

• Staffs

• Patients

Everyone has their unique ID and passwords to access their patients and patient’s to see their reports and medication.

DoctorsDoctor has to login with unique login id and password for particular practice i.e. s/he can not login to more than one practice at a time. (Since there will be different database for different practices) After successful login s/he will be redirected to schedule for that day to see his/her appointments, (default page). S/he doctor can make new appointment, mark event, recall and give prescriptions.

The Doctor’s section contains the following features:

• Patient

• Appointments

• Prescriptions

• Billing

• Reports

• Patient charts

• Lab results

User’s

StaffsStaff has to login with unique login id and password for particular practice after successful login s/he will be redirected to staff’s authorities . S/he can perform all functions in the practice management as dictated by the permissions set up by the Practice administrator.

Among the staff there will be one practice administrator who will set permissions for doctors, staff & patient

The staff’s section contains the following features:

• PatientPatient

• AppointmentsAppointments

• PrescriptionsPrescriptions

• BillingBilling

• ReportsReports

• Patient chartsPatient charts

• Lab resultsLab results

User’s

PatientPatient has to login with unique login id and password for particular practice i.e. s/he can not login to more than one practice at a time. (Since there will be different database for different practices) After successful login s/he will be redirected schedule for that day to see his/her appointments where Patient can view his appointment, cancel appointment or view prescriptions and request new appointment via email or phone call. Patient can sign up/register for particular practice by entering his information, which will be validated by staff & will respond accordingly. Any alert posted through e-mail if not responded within a stipulated time then the patient is contacted on his/her contact no/Fax.

The patient’s section contains the following features:

• AppointmentsAppointments

• PrescriptionsPrescriptions

• ReportsReports

• Lab resultsLab results

User’s

Data Warehousing Architecture

Monitoring & Monitoring & AdministrationAdministration

Metadata Metadata RepositoryRepository

ExtractExtractTransformTransformLoadLoadRefreshRefresh

Data MartsData Marts

External External SourcesSourcesOperatioOperational dbsnal dbs

ServServee

OLAP OLAP serversservers

AnalysisAnalysis

Query/ Query/ ReportingReporting

Data Data MiningMining

Medical Management Systems

This software targets to provide complete solution for Hospital and related services.

The software Includes following:• Admin• Chemist• Laboratory• OPD • Create/Edit User• Backup• Add/ Edit Doctor

continued

Hospital Management systemsAdd/Edit SupplierAdd/Edit MedicinePurchase OrderInventory TransactionSalesAdd/Edit Text Patient Text Report Text Bills

continued

Hospital Management Systems

Patient registration.Consultancy RecordOPD BillAdd/Edit FindingAdd/Edit AdviseConflicting Medicine composition

Hospital Management Systems

Report Chemist Stock Report Medicine List Sales Report Laboratory Test Report Account Report OPD Patient List Search list Accounts Report

Requirement

Operating System Windows NT 4.0 and above Windows 9xDatabase My SQL SQL SERVER MS Access

Security Security. A steering committee of clinicians guided the initial

development of the CDR and established policies for its utilization and access. Only authorized users may log onto the CDR. To protect confidentiality, all patient and physician identifying information has been partitioned into a “secure” database. Translation from or to disguised identifiers to or from actual identifiers is possible but requires a written request and appropriate approval (for example, from a supervisor or the human investigations committee). All data transmitted from the database server to the user’s browser are encrypted using the secure Netscape Web server, and all accesses to the database are logged. In addition,

ConclusionThe most challenging security threat in Data Warehouse and

OLAP systems is:Data stored in data warehouse may be disclosed through

seemingly innocent OLAP queries2 main inference threat that should be considered:

1-d inference m-d inference

We presented 3 methods to prevent / remove inference:Cardinality-based methodParity-based methodLattice-based inference control

All above methods are applicable to the three-tier inference control architecture, that especially suits OLAP systems.

References 1. Kachur, R. J. The Data Warehouse Management Handbook.

Upper Saddle River, N.J.: Prentice Hall, 2000. Scully, K. W., and others. “Development of an Enterprisewide

Clinical Data Repository: Merging Multiple Legacy Databases.” Paper presented at the annual symposium of the American Medical Informatics Association,