Table 4 Nonlinearity of ATO and DVT.

From: The waiting time of admission to operation was associated with preoperative deep vein thrombosis in geriatric hip fracture

Outcome

OR (95%CI) P-value

Fitting model by linear regression

1.05 (1.01, 1.09) 0.02

Fitting model by two-piecewise linear regression

 

Inflection point

3 d

 < 3 d

0.83 (0.66, 1.03) 0.09

 > 3 d

1.08 (1.03, 1.14) < 0.01

P for log-likelihood ratio test

0.03

  1. Adjusted for sex, fracture classification, associated injuries, dementia, transfusion, and treatment strategy.
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