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Table 4 NYHA documentation over time for CRT patients

From: Discovering and identifying New York heart association classification from electronic health records

  Pre Implant Post Implant
Year 1 Year 2 Year 3 Year 4 Year 5
CRT Patients 696 600 485 405 310 212
CRT Patients with NYHA Class 51.6% 35.7% 27.4% 25.3% 24.6% 30.0%
Encounters 11,844 5550 3984 3171 2174 1740
Encounters with NYHA Class 10.5% 25.5% 18.3% 16.7% 19.9% 20.7%