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Table 1 Comparison of dehydration levels for the full dataset and ≥ 65-year-old subgroup

From: The impact of dehydration on short-term postoperative complications in total knee arthroplasty

A. Full cohort BUN/Cr

 

Count

Percent

Dehydration level

None (BUN/Cr < 20)

184,114

53.4%

Moderate (25 > BUN/Cr ≥ 20)

90,210

26.2%

Severe (BUN/Cr ≥ 25)

70,420

20.4%

Total

344,744

100.0%

B. ≥65 years subgroup BUN/Cr

 

Count

Percent

Dehydration level

None (BUN/Cr < 20)

81,445

56.7%

Moderate (25 > BUN/Cr ≥ 20)

39,217

27.3%

Severe (BUN/Cr ≥ 25)

23,062

16.0%

Total

143,724

100.0%

  1. The raw count and percentage of patients in three bins of dehydration severity as defined by the pre-operative BUN/Cr ratio for the full dataset (Table 1A) and just the patients ≥65-years or older (Table 1B)