1. Low dietary fiber
a) Dietary fiber can decrease the viscosity of fecesàdecrease bowel transit timeàdiscourage formation of fecaliths
2. Gender
a) The risk is approximately 1.4 times greater in male than in female
3. Age
a) Occur in all age groups but incidence of appendicitis gradually rises from birth, peaks in the late teen years, and gradually declines in the geriatric years.
4. Infection
a) Gastrointestinal infections such as amebiasis, bacterial gastroenteritis, mumps, coxsackievirus B and adenovirus
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