dash_vte_recurrence_score: DASH Prediction Score for Recurrent VTE

In cliot: Clinical Indices and Outcomes Tools

DASH Prediction Score for Recurrent VTE

Description

Calculates the DASH score to predict the risk of recurrent venous thromboembolism (VTE) in patients who have completed at least 3 months of anticoagulation for a first unprovoked VTE. The score helps determine whether indefinite anticoagulation is warranted.

Usage

dash_vte_recurrence_score(d_dimer_abnormal, age, sex, hormone_use_at_onset = 0)

Arguments

d_dimer_abnormal	Numeric (0 or 1). Was the D-dimer level abnormal when measured roughly 1 month after stopping anticoagulation? (1 = Yes, +2 points).
age	Numeric. Patient age in years. (<= 50 years adds +1 point).
sex	String. Patient sex ("Male" or "Female"). (Male adds +1 point).
hormone_use_at_onset	Numeric (0 or 1). For females: Was the initial VTE associated with hormone use (e.g., OCPs, HRT)? (1 = Yes, -2 points). Defaults to 0.

Value

A list containing:

DASH_Score	The calculated score (Range -2 to 4).
Risk_Category	"Low Risk" (Score <= 1) or "High Risk" (Score >= 2).
Annual_Recurrence_Risk	Estimated annual risk of VTE recurrence.

References

Tosetto A, Iorio A, Marcucci M, et al. Predicting disease recurrence in patients with previous unprovoked venous thromboembolism: a proposed prediction score (DASH). J Thromb Haemost. 2012;10(6):1019-1025. doi:10.1111/j.1538-7836.2012.04735.x

Examples

# Example 1: High Risk
# Male (+1), Age 45 (+1), Normal D-Dimer (0)
# Score = 2
dash_vte_recurrence_score(0, 45, "male")

# Example 2: Low Risk
# Female (0), Age 30 (+1), Hormone Use (-2), Normal D-Dimer (0)
# Score = -1
dash_vte_recurrence_score(0, 30, "female", 1)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.