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GI calculator & Index

Pediatric Crohn’s disease activity index (pCDAI)

GI Calculator List

History (recall, 1week)

Abdominal pain

none

0점

mild

5점

moderate/severe

10점

Stools per day

0-1 liquid stools, no blood

0점

2-5 liquid or ≤ 2 semi-formed
with small blood

5점

≥ 6 liquid, gross blood,
or nocturnal diarrhea

10점
Patient functioning, general well-being (recall, 1week)

No limitation of activities

0점

Occasional difficulty in maintaining age appropriate activities

5점

Frequent limitation of activity, very poor

10점

Laboratory

Hematocrit (%) (use age-specific reference)

Normal

0점

Mild decrease

2.5점

Moderate/severe decrease

5점

reference

Hematicrit, %	0 points	2.5 points	5 points
< 10 years	> 33	28-32	< 28
Female, 11-19 years	≥ 34	29-33	< 29
Male, 11-14 years	≥ 35	30-34	< 30
Male, 15-19 years	≥ 37	32-36	< 32

Erythrocyte sedimentation rate (mm/h)

< 20

0점

20-50

2.5점

> 50

5점

Albumin (g/dL)

≥ 3.5

0점

3.1-3.4

2.5점

≤ 3.0

5점

Examination

Weight

Weight gain or voluntary weight stable

0점

Involuntary weight stable, weight loss 1%-9%

5점

Weight loss ≥ 10%

10점

Height at diagnosis

< 1 channel decrease

0점

≥ 1, < 2 channel decrease

5점

≥ 2 channel decrease

10점

Height follow-up

Height velocity ≥ -1 SD

0점

Height velocity < -1 SD, > -2 SD

5점

Height velocity ≤ -2 SD

10점

Abdomen

No tenderness, no mass

0점

Tenderness, or mass without tenderness

5점

Tenderness, involuntary guarding, definite mass

10점

Perirectal disease

None, asymptomatic tags

0점

1-2 Indolent fistula, scant drainage, no tenderness

5점

Extraintestinal manifestations (n)

0

0점

1

5점

2

10점

Remission	< 10
Mild	10 - 27.5
Moderate	30 - 37.5
Severe	≥ 40

Hyams JS, Ferry GD, Mandel FS, et al. Development and validation of a pediatric Crohn's disease activity index. J Pediatr Gastroenterol Nutr. 1991;12(4):439-447.