cliot (version 1.0.0)

harvey_bradshaw_index: Harvey-Bradshaw Index (HBI) for Crohn's Disease

Description

Calculates the Harvey-Bradshaw Index (HBI), a simpler alternative to the Crohn's Disease Activity Index (CDAI) for assessing disease activity. It relies on five clinical parameters collected over the previous day (or short period) rather than the 7-day diary required by the CDAI.

Usage

harvey_bradshaw_index(general_wellbeing, abdominal_pain, liquid_stools_daily,
                      abdominal_mass, complications_count)

Value

A list containing:

HBI_Score

The calculated total score.

Disease_Activity

Classification (Remission < 5, Mild 5-7, Moderate 8-16, Severe > 16).

Arguments

general_wellbeing

Numeric (0-4). Patient's general well-being. 0: Very well. 1: Slightly below par. 2: Poor. 3: Very poor. 4: Terrible.

abdominal_pain

Numeric (0-3). Abdominal pain. 0: None. 1: Mild. 2: Moderate. 3: Severe.

liquid_stools_daily

Numeric. Number of liquid or soft stools per day. (1 point per stool).

abdominal_mass

Numeric (0-3). Abdominal mass. 0: None. 1: Dubious. 2: Definite. 3: Definite and tender.

complications_count

Numeric. Count of specific complications (1 point for each): Arthralgia, Uveitis, Erythema nodosum, Aphthous ulcers, Pyoderma gangrenosum, Anal fissure, New fistula, Abscess.

References

Harvey RF, Bradshaw JM. A simple index of Crohn's-disease activity. Lancet. 1980;1(8167):514. doi:10.1016/s0140-6736(80)92767-1

Examples

# Example 1: Remission
# Well (0), No pain (0), 1 stool, No mass (0), No complications
# Score = 1
harvey_bradshaw_index(0, 0, 1, 0, 0)

# Example 2: Moderate Activity
# Poor well-being (2), Moderate pain (2), 5 stools, No mass (0), 1 Complication
# Score = 2 + 2 + 5 + 0 + 1 = 10
harvey_bradshaw_index(2, 2, 5, 0, 1)