Pain Research and Treatment / 2016 / Article / Fig 2

Research Article

Factors Related to Postoperative Pain Trajectories following Total Knee Arthroplasty: A Longitudinal Study of Patients Admitted to a Russian Orthopaedic Clinic

Figure 2

Hours of moderate to severe pain over time by preoperative anxiety. Patients with more preoperative anxiety (HADS anxiety score >8) reported more hours per day in moderate to severe pain compared with patients who had less anxiety (HADS score ≤8; main effect for anxiety, ; interaction with time, ).

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19.