A Database Study of Disease, Treatment Patterns and Healthcare Use in Children With Inflammatory Bowel Diseases in Korea

Condition(s) studied

Study summary

The purpose of this study is:

* to find out out the number of children who develop crohn's disease (CD) and ulcerative colitis (UC) each year and are living with the disease and to see how this differs by age groups.
* to understand how children of different age groups are treated over time and how their treatment changes as they grow.
* to assess how often children use healthcare services and how much this costs for different age groups over several years.

CD and UC are long-term diseases that cause inflammation in intestine (part of digestive system) and develop ulcers.

Eligibility

Primary outcome measure(s)

• Crude and Age-Adjusted Annual Incidence in Pediatric Crohn's Disease (CD) — During the index period (2012 to 2023; up to 12 years)
  The crude and age-adjusted annual incidence CD will be calculated in each calendar year. Annual incidence and the prevalence in the year of interest will be estimated using the number of newly diagnosed participants and the number of participants with the diagnosis within the corresponding year, respectively.
• Crude and Age-Adjusted Annual Incidence in Pediatric Ulcerative Colitis (UC) — During the index period (2012 to 2023; up to 12 years)
  The crude and age-adjusted annual incidence UC will be calculated in each calendar year. Annual incidence and the prevalence in the year of interest will be estimated using the number of newly diagnosed participants and the number of participants with the diagnosis within the corresponding year, respectively.
• Crude and Age-Adjusted Annual Prevalence in Pediatric CD — During the index period (2012 to 2023; up to 12 years)
  The crude and age-adjusted annual prevalence CD will be calculated in each calendar year. Annual incidence and the prevalence in the year of interest will be estimated using the number of newly diagnosed participants and the number of participants with the diagnosis within the corresponding year, respectively.
• Crude and Age-Adjusted Annual Prevalence in Pediatric UC — During the index period (2012 to 2023; up to 12 years)
  The crude and age-adjusted annual prevalence UC will be calculated in each calendar year. Annual incidence and the prevalence in the year of interest will be estimated using the number of newly diagnosed participants and the number of participants with the diagnosis within the corresponding year, respectively.
• Incidence of CD by Age-Stratified Groups — During the index period (2012 to 2023; up to 12 years)
  Incidence of CD stratified by age-specific subgroups (0 to less than \[\<\] 6 years old, 6 to \<10 years old, and 10 to \<18 years old) will be reported.
• Incidence of UC by Age-Stratified Groups — During the index period (2012 to 2023; up to 12 years)
  Incidence of UC stratified by age-specific subgroups (0 to \<6 years old, 6 to \<10 years old, and 10 to \<18 years old) will be reported.
• Prevalence of CD by Age-Stratified Groups — During the index period (2012 to 2023; up to 12 years)
  Prevalence of CD stratified by age-specific subgroups (0 to \<6 years old, 6 to \<10 years old, and 10 to \<18 years old) will be reported.
• Prevalence of UC by Age-Stratified Groups — During the index period (2012 to 2023; up to 12 years)
  Prevalence of UC stratified by age-specific subgroups (0 to \<6 years old, 6 to \<10 years old, and 10 to \<18 years old) will be reported.
• Percentage of Participants Whose Primary Diagnosis Switched Between CD and UC — During the index period (2012 to 2023; up to 12 years)
  Percentage of participants whose primary diagnosis switched at least once between CD and UC during the follow-up period will be reported.
• Initial Treatment Types by Age-Stratified Group — From index date to follow-up (Up to 13 years)
  Initial treatment types by age-stratified groups (0 to \<6 years old, 6 to \<10 years old, and 10 to \<18 years old on the index date) will be reported.
• Subsequent Treatment Sequences by Age-Stratified Group — From index date to follow-up (Up to 13 years)
  Subsequent treatment sequences by age-stratified groups (0 to \<6 years old, 6 to \<10 years old, and 10 to \<18 years old on the index date) will be reported.
• Cumulative Persistence Rates for Biologic Drugs — From index date to follow-up (Up to 13 years)
  Cumulative persistence rates for biologic drugs is defined as continuous use of the same biologic drug without a pre-defined biologic free interval (that is, 90 days or more) between prescription claims.
• Time to Discontinuation — From index date to follow-up (Up to 13 years)
  Discontinuation (non-persistence) will be defined as experiencing one of the following cases: stop: a case where biologic drug was prescribed with a gap of greater than or equal to (\>=) 90 days from the discontinuation date of the previous prescription OR no further biologic drug was prescribed until the end of study period from the discontinuation date of the index drug; switch: a case where a different biologic drug was prescribed after the initial drug; re-initiation: a case where the same biologic drug was prescribed again after \>=90 days.
• Number of Hospitalizations — From index date to follow-up (Up to 13 years)
  Number of hospitalizations both overall and by age groups will be reported.
• Length of Hospitalization — From index date to follow-up (Up to 13 years)
  Length of hospitalization both overall and by age groups will be reported.
• Number of Emergency Department (ED) Visit — From index date to follow-up (Up to 13 years)
  Number of ED visits both overall and by age groups will be reported.
• Number of Outpatient Visits — From index date to follow-up (Up to 13 years)
  Number of outpatient visits both overall and by age groups will be reported.
• Number of Inflammatory Bowel Disease (IBD) Related Surgeries — From index date to follow-up (Up to 13 years)
  Number of IBD related surgeries both overall and by age groups will be reported.
• Number of Inpatient and Outpatient Visits to Non-Gastroenterology (GI) Departments — From index date to follow-up (Up to 13 years)
  Number of inpatient and outpatient visits to non-GI departments both overall and by age groups will be reported.
• Medical Costs — From index date to follow-up (Up to 13 years)
  Medical costs including inpatient, outpatient and pharmacy costs, both overall and by age groups, will be reported.

Trial sites (1)

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