Sub-optimal Response to Anti-Tumor Necrosis Factor's in Inflammatory Bowel Disease in Emerging Markets

Incidence rate will be calculated as the number of events divided by the total person time at risk, for participants under anti-TNF therapy.

Number of participants with response to treatment will be assessed.

Treatment patterns results were as per the Anti-TNF therapy response from UC and CD participants.

The time to switch at which the participant switched to another anti-TNF therapy will be evaluated.

Time-to-first indicator of sub-optimal therapy was defined as the occurrence of dose escalation, therapy augmentation, therapy switch, therapy discontinuation, hospitalization, or surgery of participant, which ever occurred first.

Clinical response is defined as a decrease in HBI score of greater than or equal to (>=) 3 points from baseline. HBI score is used to measure the disease activity of CD. It consists of clinical parameters: abdominal pain (0-3, higher score means more severe pain), number of liquid stools per day, abdominal mass (0-3, where higher score means presence of swelling in the abdomen), and complications (score 1 per item). Total score is the sum of individual parameters. The score ranges from a minimum score of 0 to no pre-specified maximum score as it depends on the number of liquid stools, where higher scores indicating more severe disease.

Clinical response is defined as a decrease in the partial Mayo Score of at least 2 points and >=25% from baseline, with an accompanying decrease in rectal bleeding subscore of >=1 point from baseline or absolute rectal bleeding subscore of less than or equal to (<=) 1 point. Mayo score is an instrument designed to measure disease activity of UC. It consists of 3 subscores: stool frequency, rectal bleeding, and physician global assessment of disease severity, each graded from 0 to 3 with higher scores indicating more severe disease. These scores are summed to give a total score range of 0 to 9; where higher scores indicating more severe disease.

IBD-related surgeries and hospitalisation will be conducted in the two years prior to index anti-TNF therapy in UC or CD participants.

The predictors of sub-optimal response will be assessed through multivariate analysis using logistic regression or other appropriate statistical methods. Multivariate analyses may be conducted to derive predictors of sub-optimal response to anti-TNF therapy globally and individually.

HCRU will be calculated for physician clinic visits, emergency department visits, IBD-related surgeries, invasive procedures, imaging, and in-participant admissions related to UC or CD, or related complications as available in the medical record and captured in the electronic case report form (eCRF).

The physician survey questionnaire will include questions on local accessibility to infusion centres, potential restrictions of prescription, potential local difficulties for drug access (example, reimbursement process, economic burden), and other reasons for participants compliant with the local label to not receive anti-TNF therapy.