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Trial registered on ANZCTR
Registration number
ACTRN12612000621819
Ethics application status
Approved
Date submitted
31/05/2012
Date registered
8/06/2012
Date last updated
21/03/2014
Type of registration
Prospectively registered
Titles & IDs
Public title
DIAMIND: Diabetes SMS text reminders for women who have had gestational diabetes mellitus to test for type 2 diabetes or impaired glucose tolerance in the postpartum period
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Scientific title
Diabetes SMS text reminders versus standard care for women who have had gestational diabetes mellitus to increase the rate of oral glucose tolerance testing in the postpartum period
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Secondary ID [1]
280501
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Not applicable
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Universal Trial Number (UTN)
Not applicable
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Trial acronym
DIAMIND
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Gestational diabetes
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Condition category
Condition code
Reproductive Health and Childbirth
286737
286737
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0
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Childbirth and postnatal care
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Metabolic and Endocrine
286738
286738
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0
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Diabetes
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Public Health
286873
286873
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0
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Health promotion/education
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Intervention group = 6 week reminder.
The intervention will consist of text message reminders sent to the participant's phone at 6 weeks postpartum, with a subsequent reminder at 3 months and 6 months if the participant does not report having undertaken an oral glucose tolerance test. The text messages will include the participant's first name, but will otherwise be generic. The text message will remind the participant that it is time for them to have an oral glucose tolerance test to see whether they have type 2 diabetes or impaired glucose tolerance. We also ask the participants to let us know when they have had the test, and the results of the test, although this part of the text message is for data collection purposes only.
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Intervention code [1]
284866
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Early detection / Screening
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Comparator / control treatment
Control group = 6 month reminder.
The women in the control group will receive a text message reminder at 6 months postpartum to have their oral glucose tolerance test.
As with the 6 week group, the text message will remind the participant that it is time for them to have an oral glucose tolerance test to see whether they have type 2 diabetes or impaired glucose tolerance. We also ask the participants to let us know when they have had the test, and the results of the test, although this part of the text message is for data collection purposes only.
The study's primary outcome is whether or not an OGTT was undertaken by 6 months, so this 6 month reminder will not influence the primary outcome.
Note: The National Gestational Diabetes Register (NDSS Australia) sends out a reminder letter at 12-16 weeks after the expected due date, and women in both intervention and control groups may sign up to this register.
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Control group
Active
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Outcomes
Primary outcome [1]
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Whether oral glucose tolerance testing has been undertaken by six months postpartum.
Details:
To determine whether or not oral glucose tolerance testing has been undertaken by 6 months postpartum, three main methods of data collection will be utilised:
(1) asking participants to let us know whether they have had an OGTT in the initial text message
(2) asking participants whether they have had an OGTT in the 6 month postpartum follow up questionnaire
(3) checking the clinical information system in the hospital to see whether an OGTT has been done
Further data collection methods may be considered if data collection is not adequately complete using these methods alone.
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Assessment method [1]
287133
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Timepoint [1]
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Six months postpartum
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Secondary outcome [1]
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Proportion of women having other blood glucose tests.
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The "other blood glucose tests" are glycated haemoglobin (HbA1c) and fasting plasma glucose. This data will be collected only via the 6 month follow up questionnaire.
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Assessment method [1]
297469
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Timepoint [1]
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Six months postpartum
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Secondary outcome [2]
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Comparison of potentially influential factors between responders and non responders in the intervention group.
Details:
These factors have been selected as a result of literature review and careful consideration.
Trial entry weight and height will be measured for BMI calculation.
Some additional baseline characteristics and data relating to gestational diabetes will be asked verbally at recruitment. Maternal and neonatal outcomes relating to gestational diabetes will be collected from medical records. Finally, the 6 month postpartum questionnaire asks some questions regarding both current and past lifestyle as an indicator of tendency to adhere to health-related recommendations.
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Assessment method [2]
297470
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Timepoint [2]
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Various
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Secondary outcome [3]
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Test results from OGTT (where applicable)
Details: OGTT test results will be collected via multiple methods to ensure data collection is as complete as possible:
(1) asking participants to provide their results in initial text message
(2) asking participants to provide their results in the 6 month postpartum follow up questionnaire
(3) checking the clinical information system in the hospital for results
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Assessment method [3]
297471
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Timepoint [3]
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From six weeks to six months postpartum
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Secondary outcome [4]
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Preferred reminder system.
Details: Women will be asked in the 6 month follow up questionnaire what their preferred mode of reminder system is (postal, email, text, voice call).
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Assessment method [4]
297472
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Timepoint [4]
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Six months postpartum
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Secondary outcome [5]
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Cost of text reminders.
Details: Text message credits have been purchased at a set cost and the number of text messages sent will be recorded for both the intervention and control groups.
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Assessment method [5]
297473
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Timepoint [5]
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At completion of trial
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Eligibility
Key inclusion criteria
(a) Diagnosed with GDM in this pregnancy
(b) Access to a mobile phone
(c) Postnatal blood glucose level returned to normal before discharge
(d) Singleton or twin pregnancy
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Minimum age
No limit
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Maximum age
No limit
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Sex
Females
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Can healthy volunteers participate?
No
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Key exclusion criteria
(a) Known (pre-existing) type 1 or type 2 diabetes mellitus
(b) Interpreter required
(c) Stillbirth
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Study design
Purpose of the study
Diagnosis
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Allocation to intervention
Randomised controlled trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Randomisation will be undertaken using the
telephone randomisation service located at ARCH (Australian Research Centre for the Health of Women and Babies). This service will use a randomisation schedule with balanced variable blocks, prepared by a researcher not involved with recruitment or clinical care.
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
The sequence will be generated by computer random numbers and stratified by severity of GDM (e.g. whether or not insulin was required during pregnancy).
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Masking / blinding
Blinded (masking used)
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Who is / are masked / blinded?
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Intervention assignment
Parallel
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Other design features
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Phase
Not Applicable
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Type of endpoint/s
Efficacy
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Statistical methods / analysis
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Recruitment
Recruitment status
Active, not recruiting
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Date of first participant enrolment
Anticipated
15/06/2012
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Actual
22/06/2012
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Date of last participant enrolment
Anticipated
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Actual
20/01/2014
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
252
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
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University
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Name [1]
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Australian Research Centre for Health of Women and Babies, The Robinson Institute, The University of Adelaide.
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Address [1]
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72 King William Road, North Adelaide, South Australia, 5006
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Country [1]
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Australia
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Primary sponsor type
Hospital
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Name
Women's and Children's Hospital
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Address
72 King William Road, North Adelaide, South Australia, 5006.
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Country
Australia
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Secondary sponsor category [1]
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Hospital
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Name [1]
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Women's and Children's Hospital
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Address [1]
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72 King William Road, North Adelaide, South Australia, 5006
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Country [1]
284142
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Australia
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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The Women's and Children's Health Network (WCHN) Human Research Ethics Committee
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Ethics committee address [1]
287277
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Ethics committee country [1]
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Australia
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Date submitted for ethics approval [1]
287277
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Approval date [1]
287277
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Ethics approval number [1]
287277
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REC2200/8/12
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Summary
Brief summary
Gestational diabetes is a form of diabetes, or glucose intolerance, that develops during pregnancy. Women who have had gestational diabetes are many times more likely to develop type 2 diabetes in the future compared with women who have normal blood glucose levels during pregnancy. Thus, it is important to screen these women after they have given birth to see whether they have type 2 diabetes, such that it can be treated, or to see whether they are on the way to developing type 2 diabetes (have impaired glucose tolerance), such that preventative changes can be made.
The best way of detecting type 2 diabetes and impaired glucose tolerance is with an oral glucose tolerance test, and this test is recommended by many health organisations, such as the Australasian Diabetes in Pregnancy Society, to be undertaken in the early postpartum period. Despite this, evidence shows that many women who have had gestational diabetes do not receive this follow up testing.
The DIAMIND study is aiming to test whether a text message based reminder system (using mobile phone technology) will increase the number of women who have had gestational diabetes who undertake oral glucose tolerance testing in the postpartum period.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Dr Emer Heatley
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Address
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University of Adelaide Discipline of Obstetrics and Gynaecology Women's and Children's Hospital 72 King William Road, North Adelaide South Australia 5006
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Country
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Australia
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Phone
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+610883131369
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Fax
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Email
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[email protected]
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Contact person for public queries
Name
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Dr Emer Heatley
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Address
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University of Adelaide
Discipline of Obstetrics and Gynaecology
Women's and Children's Hospital
72 King William Road,
North Adelaide
South Australia 5006
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Country
17432
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Australia
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Phone
17432
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+610883131369
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Fax
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+610881617652
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Email
17432
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[email protected]
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Contact person for scientific queries
Name
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Ms Philippa Middleton
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Address
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University of Adelaide
Discipline of Obstetrics and Gynaecology
Women's and Children's Hospital
72 King William Road,
North Adelaide
South Australia 5006
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Country
8360
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Australia
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Phone
8360
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+610881617612
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Fax
8360
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+610881617652
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Email
8360
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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