Pediatric Crohn Disease Activity Index PCDAI Calculator

Abdominal pain

Stools

General well being

Weight change percent Enter percent weight loss positive for loss zero for stable or gain Example: 0 or 5 or 12

Height channel decrease or height velocity

Abdominal examination

Perirectal disease

Extraintestinal manifestations

Hematocrit category Choose category based on age and sex per reference

Erythrocyte sedimentation rate mm per hour Less than 20 gives zero points twenty to fifty gives 2.5 points greater than fifty gives 5 points

Albumin g per liter Greater than 35 gram per liter gives zero points thirty one to thirty four gives 5 points less than thirty gives 10 points

Pediatric Crohn Disease Activity Index PCDAI Explanation and Clinical Context
The Pediatric Crohn Disease Activity Index is a validated composite instrument used to quantify disease activity in children with Crohn disease. It combines history items including abdominal pain stool pattern and general well being with physical examination findings growth and perianal assessment and laboratory markers including hematocrit erythrocyte sedimentation rate and serum albumin. Each item is scored on a three point scale except for hematocrit and erythrocyte sedimentation rate which use smaller point increments The total score ranges from zero to one hundred with higher scores indicating greater disease activity.

Commonly used interpretation cutoffs are remission less than ten points mild disease ten to twenty seven point five points moderate disease around thirty to thirty seven point five points and severe disease at higher values A change of twelve point five points or greater is often used to define a clinically significant response to therapy

Reference
Hyams J et al Development and validation of the Pediatric Crohn Disease Activity Index J Pediatr Gastroenterol Nutr 1991 and subsequent validation and appraisal studies including Turner et al Am J Gastroenterol 2010 and publicly available scoring tables. For detailed item scoring and laboratory thresholds refer to the PCDAI score sheet.

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