Primary mentor | TBD | |||||
Backup mentor | TBD | |||||
Assigned to | TBD |
Burke Mamlin | ||||
Backup mentor |
Shaun Grannis | |||||
Assigned to |
Lahiru Jayathilake |
Abstract
| Excerpt |
|---|
Properly identifying patients is a critical feature of any electronic medical record system. In the real world, there can be many challenges to patient identification. While some countries have reliable universal identifiers, most countries do not and we rely on patient demographics (e.g., names, gender, date of birth, etc.) to identify patients. In many cases, proper identification can be challenging (e.g., variable spelling of names, estimated or unknown date of birth). While ongoing efforts to incorporate biometrics and other means of reliable identification, the reality is many systems ending up with duplicate records for patients. |
...
- Currently blocking schemes are not chosen using data-driven evidence, but instead are selected in an ad-hoc fashion based on user experience. Evaluate the feasibility for generating automatic recommendations for users to create more efficient blocking schemes to further improve matching efficiency. e.g., “Using last name, first name, and gender will create 5 million potential pairs.”
- Investigate approaches for using clinical data to improve matching accuracy by augmenting currently used patient identifiers. First deliverable would be a written approach and feasibility assessment for the proposed approach.
- Plot a path for further scaling the module (e.g., re-writing in Go, using Docker containers in a cluster, using Hadoop to approach patient matching as a map-reduce problem).
Implementation
The whole project can be grouped into two categories
- Incremental Patient Matching
- Merging and Excluding Patients from the Patient Matching Report
Incremental Patient Matching
In this part mainly one of the limitations of Patient Matching Module is addressed, which is making comparisons with all of the patient records.
For instance, if we have 10,000 patients in our system and we need to match the patients using first name and the date of birth. Goal is to check for the duplicates among them. If we compare all patients to all the others that is roughly 50 million comparisons ( 10,000 x (10,000 - 1) / 2 ). After couple of days if we run the same match where 90 patients have been added and 10 updated, with the current version it would still carry out the same method of comparison and this time it would be about 51 million comparisons!
In this project a solution is given, where the module performs comparisons only for the added and updated records for that particular strategy. Patient Matching 2.0 has this amazing method to perform this task by making about 1 million [(100 x 99 / 2) + (100 x 9990)] comparisons rather than 51 million of comparisons. Congratulations we saved the valuable time of the module neglecting 50 million comparisons.
User Interface
Things to be Highlighted
- By default the checkbox Incremental Match is checked. User can perform a patient match as an incremental or as a normal patient match where all the patients are compared to all of them.
- A single report per a strategy. The report will be named as incremental-report-[strategy_name]
- To perform an incremental patient match it is necessary to have an already generated report for that particular strategy. If not module will compare all the patients to all others.
- Incremental patient matching will be performed if only a single strategy is selected.
Merging & Excluding Patients
User Interface of a Report
Merge Patients
If some of the patients in a group supposed to be the same then the user can merge those patients making they will not appear again in a patient matching report. To merge patients you have to select set of patients from a group and hit the corresponding merge button. For example in the above image the three selected patients can be merged by clicking "Merge GroupId 0" button.
Exclude Non-Matching Patients
There can be some scenarios where the module results some of patients to be same but in real life those patients are related to totally different people. If this happens Patient Matching 2.0 project provides a functionality to eliminate such records without them repeatedly appearing on a patient matching report. To exclude patients you have to select set of patients from a group and hit the corresponding "Exclude Match" button.
Resources
- GSoC 2017 Patient Matching Module TALK thread
- Patient Matching Module
- Source on GitHub: openmrs-module-patientmatching, https://github.com/Lahiru-J/openmrs-module-patientmatching
Weekly blog posts during the development period