November 2, 2007

Validation of ICD‐9 codes with a high positive predictive value for incident strokes resulting in hospitalization using Medicaid health data

Structured PICO

Does a specific ICD-9 coding strategy accurately identify incident strokes in Medicaid health data?

P

Population

Medicaid patients with incident strokes resulting in hospitalization

I

Intervention

ICD-9 coding strategy using primary discharge diagnosis and excluding prior outpatient diagnoses of stroke

O

Outcome

Positive predictive value (PPV) of incident strokes

A specific ICD-9 coding strategy yields an 80% positive predictive value for identifying incident strokes in Medicaid data, enabling its use in etiologic studies.

Abstract

The PPV of incident strokes was 80% using our strategy of primary discharge diagnosis and excluding prior outpatient diagnoses of stroke. Although an unknown percentage of incident strokes are missed, this group of proven incident stroke patients can be used for etiologic studies of medication exposures.

Validation of ICD‐9 codes with a high positive predictive value for incident strokes resulting in hospitalization using Medicaid health data

Structured PICO

Abstract

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Also Consider

Also Consider