Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

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Fig. 2. Subgroup analysis for the risk of irritable bowel syndrome (IBS) with former infantile colic. IBS was defined as more than twice the diagnosis of International Classification of Diseases 10th version codes K58.X (IBS) after 4 years of age. Data on whether children breastfed or not were acquired from the first round of the national health screening program for infants and children, which was performed at the age of 4 to 6 months. The median birthweight of participants was 3.26 kg. Economic status was defined as the insurance premium acquired from the National Health Insurance Service. Participants in the reference group were weighted as (propensity score/[1-propensity score]). This method produces a weighted pseudosample of participants in the reference group with the same distribution of measured covariates as the exposure group. Filled squares indicate hazard ratios, and straight lines indicate 95% CI. The hazard ratios were assessed using a Cox proportional hazards model to examine the relationship between infantile colic history and the risk of IBS development in the cohort.
J Neurogastroenterol Motil 2022;28:618~629
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