Response to: 'Correspondence on 'Risk of venous thromboembolism in knee, hip and hand osteoarthritis: a general population-based cohort study by Lin et al

Lin et al 1 raised three points with regard to residual confounding to affect our findings. Below we provide point-by-point replies to the three comments.

First, we agree that immobilisation duration is a strong risk factor for postoperative venous thromboembolism (VTE). The aim of our study was to examine the relation of incident osteoarthritis (OA) to the risk of VTE (ie, the total effect) and to assess to what extent the effect of incident OA on the risk of VTE is through its effect on knee/hip replacement (ie, the indirect effect).2 Since …

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