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Table 4 BUN quartiles of patients

From: Elevated blood urea nitrogen is associated with recurrence of post-operative chronic subdural hematoma

Variable

Recurrence (n = 96)

Non-Recurrence (n = 557)

χ2

P-value

BUN (mmol/L)

  

14.308

0.003

 Quartile 1(≤4.0)

14 (14.6%)

156 (28.0%)

4.870

0.027

 Quartile 2(> 4.0,≤4.9)

22 (22.9%)

140 (25.1%)

0.132

0.717

 Quartile 3(> 4.9,≤6.4)

24 (25.0%)

140 (25.1%)

0.000

0.983

 Quartile 4(> 6.4)

36 (37.5%)

121 (21.7%)

6.283

0.012

  1. BUN, blood urea nitrogen;
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BMC Neurology

ISSN: 1471-2377

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