Module 4: Ocean Studies

Module 4 Agenda

Basic Concepts for Research on OceanCreating your first study and exporting data

PseudonymizationNot just another long word…

Research Study FeaturesAdvanced features for comprehensive studies

Why Use Ocean for Research

Low-Cost • Potential for "do it yourself" without building an app • Pseudonymization engine eliminates need for participant

key management in spreadsheets

Designed for Primary Care• EMR integration and drop into existing Ocean workflows• Multi-site studies and automatic recruitment rules

Secure• All the security you'd expect from CognisantMD

A Variety of Research Scenarios

Scenario 1: You want to use your tablets to do anonymous surveying of patients for quality improvement or clinical research.• Example: Patient Experience Surveys at many FHTs

Scenario 2: You want to capture anonymous data for clinic decision support, while also using patient responses for clinical care in that visit.• Example: St. Michael's Hospital and Health Equity

Scenario 3: You want to conduct formal clinical research on a small sample (100 patients for example)• Example: Mount Sinai LSS Research

Scenario 4: A 3rd party wants to conduct large-scale primary care research at multiple primary care locations (with different EMRs)• Example: Dr. Harold Kim, Allergist in Kitchener; various public

health initiatives in Ontario

A Variety of Research Scenarios

• Example: Patient Experience Surveys at many FHTs

You want to use your tablets to do anonymous surveying of patients for

quality improvement or clinical research.

• Example: St. Michael's Hospital and Health Equity

You want to capture anonymous data for clinic decision support, while also using

patient responses for clinical care in that visit.

• Example: Mount Sinai LSS Research

You want to conduct formal clinical research on a small sample (100 patients

for example)

• Example: Dr. Harold Kim, Allergist in Kitchener; various public health initiatives in Ontario

A 3rd party wants to conduct large-scale primary care research at multiple primary

care locations (with different EMRs)

Ocean Studies

Encrypted Responses

Patient's Chart in EMR

Depersonalized Responses

Ocean Study Repository?

If the EForm "data security" is set to

anonymous or hybrid

If the EForm "data security" is set to

encrypted or hybrid

Ocean Studies: the Basic Facts

A study repository holds data until you delete it in an encrypted format in the Ocean system (in Canada)

Has exactly one EForm associated with it

Has configuration options that control aspects of the data collection

Deleting a Study repository deletes the encryption key and the collected data permanently

You can export data at any time; the export does not remove the data from Ocean

Although can be created manually, normally they are automatically generated for you when a study EForm is completed

Connecting EForms and Studies

Every EForm has a data security setting • Encrypted: for individual

patient care; encrypted using a one-time key

• Anonymous: depersonalized, stripped of PHI* and stored in the Ocean research repository

• Hybrid: both

* unless explicitly included as a field in research questionnaire form

Your clinic joins a research study on chronic pain. Happily, they are basing it on your assessment tool due to extensive validation in clinical settings.

1. Open your Simple Pain Tool from Module 3

2. Change the data security type to hybrid

3. Complete the questionnaire

4. Export the data from the studies tab

5. Set the data security type to anonymous and try again. What's different?

Exercise: The Pain Study

Some Observations on your Exported Data The eForm item refs are used as a column

reference• You can "override" these in the editor

The submission source tells you what device was used

The data is based on the value not the display

The source site is your site• More on multi-site studies later

A participant key column contains jibberish• More on this in the next section

Robustness of Study Data

The study responses are stored a bit like this:• studyEForm = 'myPainToolRef'

myFirstQuestionRef : 'Y' MySecondQuestionRef : 'N'

A study response never changes once it is captured (except with advanced "update existing responses" option)

The export button takes the current version of the eForm and displays answers for each item in that form based on ref

That means that:• It's possible to change a questionnaire without corrupting your

data set• You can end up with invisible data if you change a ref after

collecting some data (but it isn't lost)

Pseudonymization

Scenario: you are doing a longitudinal research study. • You want to assess patients at t=0 and t=6 months.

• You need to collate the responses such that patient Bob's responses at both points in time can be compared

• Proper blinding is required; the patient identity must not be known to the researchers and collected data must be depersonalized

Some of the disadvantages of longitudinal studies include the fact that they take a lot of time and are very expensive … they are not very convenient.(http://en.wikipedia.org/wiki/Longitudinal_study)

Pseudonymization

Pseudonymization is a procedure by which the most identifying fields within a data record are replaced by one or more artificial identifiers, or pseudonyms. There can be a single pseudonym for a collection of replaced fields or a pseudonym per replaced field. The purpose is to render the data record less identifying and therefore lower customer or patient objections to its use. Data in this form is suitable for extensive analytics and processing.(http://en.wikipedia.org/wiki/Pseudonymization)

Pseudonymization

Implemented in Ocean using Participant Keys

Auto-generated pseudonyms for patients are added to studies data by default• Incorporates surname, birthdate, sex and part of the

healthcard number if available• If any of surname, birthdate and sex are missing,

participant key is blank• Different for different patients, the same for the same

patient• Impossible to reverse engineer to identify a patient

Example: "54b93a04e4b098d3d7053f9f"

Form Memory vs. Participant Keys

Form Memory "Hashes" Participant Keys

Based on surname, birthdate, sex (plus health number if available)

Same but "salted" with a study-specific key to protect patient identity

Used in scripting to drive form and tablet behaviour (e.g. "daysSinceLastCompletion > 365")

Captured with study data

Used in clinical and research scenarios

Only relevant for research

Let's take a look at the study that was auto-created.

1. Go the Studies tab and click "configure" for your study

2. Notice that the pseudonymization can be disabled for true anonymity

3. Enable online access

4. Visit the link and complete the form

5. Export the data; notice the submission source

Exercise: Configuring a Study

Multi-Form Studies

Scenario: You want to do a baseline pain assessment using the Simple Pain Tool but you want to have a simpler interim assessment at t=3months.

Introduces a twist – recall that study submissions are "salted" to protect patient identity• The same patient completing different study forms would

end up with different participant keys!

Solution: Participant Key Alignment• Configures a study to use the same participant keys as

another

You've been asked to coordinate a primary care research study at six sites using different EMRs.

1. Create a Very Simple Pain Tool with a single pain scale

2. Create a study for it (if not auto-created). Align the participant keys with the Simple Pain Tool.

3. Invite the Demo Site to participate.

4. Complete the two assessments on your tablet or online.

5. Instructor will send you a web questionnaire for both assessments; complete those

6. Export the data and review

Exercise: Multi-Site, Multi-Form Study

End of Module 4 Quiz

1. What are the inputs to a participant key?

2. List 4 ways that you could have patients or clinicians complete an Ocean study questionnaire

3. You have a t=0 and a t=12 month assessment for a longitudinal study. You review the data and the participant keys for John Smith are different. What might have happened?

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