roth_hypoxia_score: Roth Score for Hypoxia Screening

In cliot: Clinical Indices and Outcomes Tools

Roth Score for Hypoxia Screening

Description

Calculates the Roth Score risk stratification for hypoxia. This simple bedside test involves the patient taking a deep breath and counting out loud from 1 to 30 as fast as possible. The highest number reached (Max Count) correlates with pulse oximetry (SpO2) levels. It is often used as a screening tool for telemedicine or when pulse oximetry is unavailable.

Usage

roth_hypoxia_score(max_count_reached, duration_seconds)

Arguments

max_count_reached	Numeric. The highest number the patient reached in a single breath counting out loud as fast as possible.
duration_seconds	Numeric. The total time in seconds elapsed during the count. (Used primarily for clinical context/verification of effort).

Value

A list containing:

Max_Count	The input count.
Risk_Category	Risk classification (High, Intermediate, Low) based on the count threshold.
Diagnostic_Performance	Sensitivity metrics for detecting SpO2 < 95% based on the count.

References

Chorath K, Prine L, Ludmir J, et al. The Roth Score: A Novel Method for Assessing Hypoxia. Telemedicine and e-Health. 2021.

Examples

# Example 1: High Risk
# Patient reached 5 in 4 seconds
roth_hypoxia_score(5, 4)

# Example 2: Low Risk
# Patient reached 25 in 10 seconds
roth_hypoxia_score(25, 10)

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