From: Prevalence and predictors of alternative diagnoses on whole-leg ultrasound negative for acute deep venous thrombosis
Predictor
Odds ratio
95% confidence Interval
P value
Age (per year)
1.014
1.003–1.025
0.0119
Male gender
1.118
0.7721–1.622
0.5547
Leg swelling
1.949
1.284–3.001
0.0020
Redness
2.089
0.8128–6.468
0.1555
Previous DVT
2.235
1.199–4.448
0.0154