Develop and Validate a Self-Administered Instrument That Will Screen for Eating Disorder Symptoms in Persons Aged 12 and Older With Type 1 Diabetes.
| Status: | Completed |
|---|---|
| Conditions: | Psychiatric, Diabetes, Eating Disorder |
| Therapuetic Areas: | Endocrinology, Psychiatry / Psychology |
| Healthy: | No |
| Age Range: | 12 - Any |
| Updated: | 4/21/2016 |
| Start Date: | December 2008 |
| End Date: | December 2015 |
Development of an Instrument to Screen for Eating Disorder Symptoms in Persons With Type 1 Diabetes
The purpose of this study is to develop and validate a survey instrument to be used by
persons with type 1 diabetes aged 12 and older to screen for an eating disorder.
persons with type 1 diabetes aged 12 and older to screen for an eating disorder.
Phase 1 - Develop an initial instrument and start to establish content validity. What do
dually diagnosed patients believe are the most important, relevant, and significantly
contributing constructs that we should measure in order to capture those individuals with
type 1 diabetes who may exhibit symptoms of an eating disorder? What individual items will
best measure these constructs?
Phase 2 - Conduct individual interviews for cognitive testing of our instrument and further
examine its content validity. How well do the individual items included in our instrument
capture eating disorder symptoms in patients with type 1 diabetes? Do these items accurately
capture the information we seek to collect? What symptoms have we not considered? How
readable and understandable are our questions?
Phase 3 - Explore the internal consistency reliability and construct validity of our
instrument. Do the items in our instrument accurately capture the constructs we wish to
measure? Do similar items "hang together" in a manner that is clinically and theoretically
meaningful?
Phase 4 - Address convergent and discriminant validity as well as test-retest reliability.
Does our instrument demonstrate appropriate convergent and divergent validity as well as
test-retest reliability? Does our instrument capture eating disorder symptoms among persons
with diabetes? Is our instrument more specific to the population of individuals with
diabetes than traditional eating disorder instruments (i.e., does our instrument capture
more information and give a more accurate presentation than the other instruments)?
dually diagnosed patients believe are the most important, relevant, and significantly
contributing constructs that we should measure in order to capture those individuals with
type 1 diabetes who may exhibit symptoms of an eating disorder? What individual items will
best measure these constructs?
Phase 2 - Conduct individual interviews for cognitive testing of our instrument and further
examine its content validity. How well do the individual items included in our instrument
capture eating disorder symptoms in patients with type 1 diabetes? Do these items accurately
capture the information we seek to collect? What symptoms have we not considered? How
readable and understandable are our questions?
Phase 3 - Explore the internal consistency reliability and construct validity of our
instrument. Do the items in our instrument accurately capture the constructs we wish to
measure? Do similar items "hang together" in a manner that is clinically and theoretically
meaningful?
Phase 4 - Address convergent and discriminant validity as well as test-retest reliability.
Does our instrument demonstrate appropriate convergent and divergent validity as well as
test-retest reliability? Does our instrument capture eating disorder symptoms among persons
with diabetes? Is our instrument more specific to the population of individuals with
diabetes than traditional eating disorder instruments (i.e., does our instrument capture
more information and give a more accurate presentation than the other instruments)?
Inclusion Criteria:
- eating disorder
- type 1 diabetes
Exclusion Criteria:
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