Manitoba Inflammatory Bowel Disease Cohort Study

Study Overview
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Brief Summary
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The Manitoba Inflammatory Bowel Disease (IBD) Cohort Study participants were drawn from a population-based research registry. The cohort consisted of 388 adult enrollees with recent IBD onset who completed the baseline survey and interview in 2002 to 2003. Participants were followed every 6 months with surveys and annually with interviews. Diagnosis and disease type were verified by chart review.

Detailed Description
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The Manitoba Inflammatory Bowel Disease (IBD) Cohort Study, initiated in 2002, is study of adults with IBD who have been tracked prospectively through annual clinical interviews and semiannual surveys. The participants were drawn from a validated population-based research registry, which identified and recruited individuals using an administrative definition of IBD from the comprehensive health data base of Manitoba Health, the single insurer that provides health care to all residents in the province. The cohort consisted of 388 adult enrollees with recent IBD onset who completed the baseline survey and interview in 2002 to 2003. Participants were followed every 6 months with surveys and annually with interviews. Diagnosis and disease type were verified by chart review. It has been demonstrated that the Cohort is representative of the provincial IBD population as a whole, with comparable age distribution, sex distribution, disease duration, and rural/urban residence.

Official Title
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Manitoba Inflammatory Bowel Disease Cohort Study

Conditions
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Inflammatory Bowel Diseases, Crohn Disease, Ulcerative Colitis

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: diagnosed within the previous 7 years with Inflammatory Bowel Disease Exclusion Criteria: -

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 85 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Crohn's Disease Cohort<br>250 individuals in the Crohn's Disease Cohort | |
| ulcerative colitis cohort<br>108 individuals in the ulcerative colitis cohort | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Genetic Associations | Single Nucleotide Variations (SNPs) in gene encoding for membrane transporter proteins were investigated for associations with both IBDs. Target genes included SLC23A1, SLC22A4, SLC22A5, SLC22A23, SLC2A14, SLC2A2 but analyses are not limited to these. | 2010 to 2016 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Psychological Functioning 1 | The validated 7-item Mastery scale assesses the degree to which persons feel they have some control or mastery over their life to handle day-to-day challenges. | 2010-2014 | 
| Self Efficacy | The IBD- Self Efficacy (SE) is a 29-item scale developed by Keefer et al. (1) based on patient interview, validated self-efficacy measures for other diseases. The instrument assesses the level of confidence in managing various disease-related tasks, with item scores ranging from 1 (not at all) to 10 (totally), and higher scores reflecting greater disease self-management efficacy. Items were grouped conceptually into 4 subscales, reflecting domains identified by patients with IBD as important [1] managing stress and emotions (sample items: keep from feeling sad; do something to reduce stress); [2] managing medical care (sample items: take medication at instructed times; work out differences with doctors); [3] managing symptoms and disease (sample items: keep diarrhea/urgency from interfering; decrease fatigue); [4] maintaining remission (sample items: engage in self-care; maintain sense of well-being). | 2010-2014 | 
| Disability | The Sheehan Disability Scale is a commonly used and validated instrument that measures disease interference in 3 primary domains of life: work, social, and home, based on a visual analog scale from 0 (no interference) to 10 (very severe interference). (1,2) Sheehan DV, Harnett-Sheehan K, Raj BA. The measurement of disability. Int Clin Psychopharmacol. 1996;11(suppl 3):89-95. Leon AC, Olfson M, Portera L, et al. Assessing psychiatric impairment in primary care with the Sheehan Disability Scale. Int J Psychiatry Med. 1997;27:93-105. | 2010-2014 | 
| Health and Quality of Life 1 | Perceived health was assessed using the General Health item from the Medical Outcome Survey Short Form 36, (1) which asks participants to characterize their health in the past year, using 5 response categories from Excellent to Poor. | 2010-2014 | 
| Disease Activity 1 | Current disease activity was assessed using standardized clinical indices, the Harvey-Bradshaw index for CD. | 2010-2014 | 
| Disease Activity 2 | Current disease activity was assessed using standardized clinical indices, the modified Powell-Tuck index for UC. | 2010-2014 | 
| Disease Activity 3 | Recent disease activity was measured with the Manitoba IBD Index | 2010-2014 | 
| Psychological Functioning 2 | The Cohen Perceived Stress Scale is a 14-item questionnaire, with a 5-point Likert response format, that assesses the individual's appraisal of their stress load related to chronic and acute stressors. | 2010-2014 | 
| Psychological Functioning 3 | The Brief Symptom Inventory is a well-established measure of current emotional distress related to multiple psychological symptoms, consisting of 53 items. | 2010-2014 | 
| Psychological Functioning 4 | The Psychological Well-being Manifestations Scale consists of 25 items that query 6 general domains of positive experience using a 5-point Likert frequency scale, with higher scores indicating a greater sense of well-being. | 2010-2014 | 
| Health and Quality of Life 2 | The 32-item Inflammatory Bowel Disease Questionnaire is a validated measure that has been extensively used in IBD studies to assess disease-specific quality of life. | 2010-2014 |