Preventing Nerve Function Impairment in Leprosy: Validation and Updating of a Prediction Rule
2008

Predicting Nerve Damage in Leprosy Patients

Sample size: 864 publication Evidence: moderate

Author Information

Author(s): Ron P. Schuring, Jan H. Richardus, Ewout W. Steyerberg, David Pahan, William R. Faber, Linda Oskam

Primary Institution: KIT (Royal Tropical Institute) Biomedical Research, Amsterdam, The Netherlands

Hypothesis

To validate and update a prediction rule for estimating the risk of leprosy-related nerve function impairment (NFI).

Conclusion

The adjusted prediction rule can better identify patients at risk of developing nerve function impairment in leprosy.

Supporting Evidence

  • NFI occurred in 115 of 864 patients (13%).
  • The adjusted prediction rule identified 80% of patients with NFI compared to 72% with the original rule.
  • The c statistic for the adjusted prediction rule improved from 0.79 to 0.81.

Takeaway

Doctors can use a new method to find out which leprosy patients are likely to have nerve problems, helping them get treatment sooner.

Methodology

A prospective cohort study analyzed data from newly diagnosed leprosy patients to validate and adjust a prediction rule for nerve function impairment.

Limitations

The study could not validate the adjusted prediction rule on the original Bands cohort due to lack of serology data.

Participant Demographics

The study included 864 leprosy patients (538 males, 326 females; median age 34 years, range 5–84 years).

Statistical Information

P-Value

p<0.0001

Confidence Interval

95% CI 11%–16%

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1371/journal.pntd.0000283

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