Predictors of abdominal pain in schoolchildren: a 4-year population-based prospective study

Background:Chronic abdominal pain (CAP) is common among schoolchildren, but risk factors for its onset are still largely unknown.Aims:To determine the frequency of onset of CAP in schoolchildren and investigate risk factors for its development.Methods:1411 schoolchildren aged 11–14 years were recruited from schools in North West England. Information was collected on recent pain symptoms and potential risk factors for developing CAP. Participants were followed up 1 and 4 years later and new episodes of CAP were identified.Results:22% reported new-onset abdominal pain at 1-year follow-up which persisted at 4-year follow-up (CAP). CAP was almost three times higher in girls than boys (34% vs 13%; χ2: 26.0; p