Key result
Phlebography shows only moderate-to-substantial inter-observer agreement for diagnosing postoperative thrombosis.
Why the study?
The uncertainty in the evaluation of phlebography as a diagnostic tool for thrombosis after total hip arthroplasty may affect thromboprophylaxis studies.
What is the inter-observer agreement for phlebography in diagnosing thrombosis after total hip arthroplasty?
Population
241 patients with total hip arthroplasty
Comparison
Phlebography evaluations by 4 independent observers vs final consensus
Design
Observational study with independent blinded evaluations
Follow-up
7 to 11 days after surgery
Authors
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Requires caution in phlebography-based thrombosis diagnosis after hip arthroplasty; leaves open its reliability for thromboprophylaxis trials.
Observational (n=241)
What is the inter-observer agreement for phlebography in diagnosing thrombosis after total hip arthroplasty?
Effect estimate: kappa 0.60 to 0.83
There is a notable factor of uncertainty in the evaluation of phlebography for thrombosis, which should be considered when planning postsurgical thromboprophylaxis studies.
Borris et al. (1992) conducted an observational in Total hip arthroplasty (n=241). Phlebography was evaluated on Inter-observer agreement on diagnosis of thrombosis (kappa 0.60 to 0.83). Phlebography evaluation by independent observers showed variable agreement on thrombosis diagnosis, with inter-observer kappa values ranging from 0.60 to 0.83.
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