Quality of Life in People with and at Risk for Type 2 Diabetes: Findings from the Study to Help...
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![Page 1: Quality of Life in People with and at Risk for Type 2 Diabetes: Findings from the Study to Help Improve Early Evaluation and Management of Risk Factors.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649e8e5503460f94b90e5a/html5/thumbnails/1.jpg)
Quality of Life in People with and at Quality of Life in People with and at Risk for Type 2 Diabetes:Risk for Type 2 Diabetes:
Findings from the Findings from the SStudy to tudy to HHelp elp IImprove mprove EEarly Evaluation and Management of Risk arly Evaluation and Management of Risk
Factors Factors LLeading to eading to DDiabetes (SHIELD)iabetes (SHIELD)
Richard H. Chapman, PhD1
Susan Grandy, PhD2
for the SHIELD Study Group1. ValueMedics Research, Falls Church, VA, USA
2. AstraZeneca Pharmaceuticals, Wilmington, DE, USA
Research supported by AstraZeneca
ISPOR 11th Annual International Meeting, Philadelphia
May 23, 2006
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Background: DiabetesBackground: Diabetes
• Diabetes affects ~21 million people in the US.1
• More than a million people develop the disease each year.
• Diabetes was the sixth leading cause of death in the US in 2002.
• Costs associated with diabetes were $132 billion in 2002, up from $98 billion in 1997.2
1. http://www.diabetes.org/about-diabetes.jsp
2. http://www.diabetes.org/for-media/2003-press-releases/03-24-03.jsp
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Personal Impact of DiabetesPersonal Impact of Diabetes
• Chronic disease with ongoing monitoring, treatment
• Complications from diabetes include:– Blindness
– Kidney disease
– Nerve damage
– Circulatory problems
– Heart disease
– Stroke
• Mortality rate 2–4 times higher than adults without diabetes*
* http://www.diabetes.org/diabetes-statistics/complications.jsp
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Diabetes & Quality of LifeDiabetes & Quality of Life
• Type 2 diabetes (T2D) substantially affects patients’ health-related quality of life (HRQoL)
• Impacts of treatments, complications, and comorbidities have been documented to adversely affect HRQoL for patients with T2D
• Limited information available on HRQoL of those without diabetes but at high risk for developing this condition
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SHIELDSHIELD
• 5-year, national, longitudinal survey of diabetes, CVD, and metabolic disease risks in US adults
• Purpose: To better understand patterns of health behavior, knowledge and attitudes of people living with T2D and those at high risk for its development
• This analysis looks specifically at self-reported health-related quality of life (HRQoL) in individuals with T2D and those with varying degrees of risk for T2D
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ObjectivesObjectives
• To measure HRQoL of people with T2D and those with varying risk levels for T2D, using results from the SHIELD study’s baseline survey
• To better understand the unmet medical need and burden of illness in the T2D and at-risk population
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Methods: Identifying CohortsMethods: Identifying Cohorts
• Screener questionnaire mailed to 200,000 nationally representative households– Part of the TNS* (formerly National Family Opinion)
consumer panel
– Responses for 211,097 adults from 127,420 households (64% response rate)
• Used to identify individuals who self-reported:– T2D
– Varying numbers of risk factors (RF) associated with T2D diagnosis
*TNS = Taylor Nelson Sofres
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Risk Factor DefinitionsRisk Factor Definitions
Risk Factor Definition
Abdominal obesity Men: waist circumference > 97cmWomen: waist circumference >89 cm
BMI 28 kg/m2
Cholesterol problems Diagnosed with cholesterol problems of any type
Hypertension Diagnosed with high blood pressure
CV event One or more CV problems or events (heartdisease/myocardial infarction, narrow or blockedarteries, stroke, coronary artery bypass graftsurgery/angioplasty/stents/surgery to cleararteries)
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Survey ProcessSurvey Process
• Diabetes risk factors were summed (0–5)
• Sampled respondents who self-reported T2D and 0, 1, 2, 3, 4, and 5 risk factors*
• 64-item survey was sent to 22,001 people
* Surveys were also sent to a sample of type 1 diabetes respondents, not reported here
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HRQoL MeasuresHRQoL Measures
• Respondents completed:– MOS Short Form-12 version 2 (SF-12 v2)
– EuroQol – Five Dimension scale (EQ-5D)
• For both scales:– Range = 0–100
– Higher scores indicate better quality of life
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HRQoL Measures: SF-12v2HRQoL Measures: SF-12v2
• 12-item measure of overall health status
• Recall period = past 4 weeks
• 8 domains:• Physical functioning
• Role limitations due to physical health (role-physical)
• Bodily pain
• General health perceptions
• Vitality
• Social functioning
• Role limitations due to emotional problems (role-emotional)
• Mental health
• Norm-based scoring (population mean = 50)
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HRQoL Measures: EQ-5DHRQoL Measures: EQ-5D
• 5-item health profile– Can be used descriptively (as here) or converted to
index utility value
• Visual analogue scale (VAS) for current health– 0–100 graduated scale
• 5 dimensions:• Mobility
• Self-care
• Usual activities
• Pain/discomfort
• Anxiety/depression
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Statistical AnalysesStatistical Analyses
• Categorized into 0–2 risk factors, 3–5 risk factors, T2D
• Mean scores, both overall and by domain
• ANOVA with Fisher’s LSD post-hoc test (P<0.01)
• Multivariable regression modeling with HRQoL measure as dependent variable, adjusting for:– Age, sex, race
– Household size
– Household income
– Geographic region
– BMI
– Group (0–2 risk factors, 3–5 risk factors, T2D)
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ResultsResults
• Surveys were returned by 17,640 individuals (80% response rate) overall.
• For the SF-12v2 and EQ-5D, complete responses were available from >70% of each cohort.
Cohort Sent SF-12v2 EQ-5D VAS
0-2 RF 7,403 5,335 5,6383-5 RF 6,742 5,051 5,377T2D 5,000 3,530 3,851
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Mean SF-12 PCS & MCS ScoresMean SF-12 PCS & MCS Scores
*P<0.001 vs. 0–2 RF**P<0.001 vs. 3–5 RF
0-2 RF 0-2 RF
3-5 RF
3-5 RF
T2D
T2D
0
10
20
30
40
50
60
Physical Component Mental Component
* ***
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Mean EQ-5D VAS ScoresMean EQ-5D VAS Scores
0-2 RF
3-5 RFT2D
0
10
20
30
40
50
60
70
80
90
100
Current State of Health (VAS)
* ***
*P<0.001 vs. 0–2 RF**P<0.001 vs. 3–5 RF
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SF-12 Scale ItemsSF-12 Scale Items
0
10
20
30
40
50
60
Physic
al Fun
ction
ing
Role Phy
sical
Bodily
Pain
Gener
al Healt
h
Vitality
Socia
l Fun
ction
ing
Role Em
otion
al
Men
tal H
ealth
0-2 RF 3-5 RF T2D
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Multivariable Regression ResultsMultivariable Regression Results
Coeff. SE P-value Coeff. SE P-valueSF-12 PCS -4.82 0.25 <0.001 -6.52 0.27 <0.001SF-12 MCS -1.71 0.24 <0.001 -1.72 0.25 <0.001EQ-5D VAS -6.49 0.40 <0.001 -9.75 0.42 <0.001
3-5 RF T2DDependent Variable
0–2 risk factors as reference category
After adjusting for age, sex, race, household size, household income, geographic region, and BMI
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ConclusionsConclusions
• Ratings of HRQoL in people with T2D and those at increased risk for diabetes were similar.
• Both of these groups reported substantially worse HRQoL than did those at lower levels of risk for diabetes.
• HRQoL decrements were greater for physical domains than for emotional or mental.
• Annual data from SHIELD will be used to evaluate HRQoL of those at increased risk as they transition to T2D.