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Table 2 Incidence of index hyperkalemic event

From: Epidemiology and health outcomes associated with hyperkalemia in a primary care setting in England

  Number of patients with index HK Incidence of index HK event per 100 person-years (95% CI)
Overall 195,178 2.86 (2.83–2.89)
Serum K+ level during HK event, mmol/L
 5.0 to ≤ 5.5 or CPRD diagnosis code in the absence of laboratory results 177,945 2.61 (2.58–2.63)
  > 5.5 to ≤ 6.0 14,020 0.21 (0.20–0.21)
  > 6.0 or HES diagnosis code, regardless of serum K+ level 3213 0.05 (0.04–0.05)
  1. CI confidence interval, CPRD Clinical Practice Research Datalink, HES Hospital Episode Statistics, HK hyperkalemia, K+ potassium