What Factors are Associated With Quality Of Life, Pain Interference, Anxiety, and Depression in Patients With Metastatic Bone Disease?

backgroundIt would be helpful for the decision-making process of patients with metastatic bone disease to understand which patients are at risk for worse quality of life (QOL), pain, anxiety, and depression. Normative data, and where these stand compared with general population scores, can be useful to compare and interpret results of similar patients or patient groups, but to our knowledge, there are no such robust data. QUESTIONS/PURPOSES: We wished (1) to assess what factors are independently associated with QOL, pain interference, anxiety, and depression in patients with metastatic bone disease, and (2) to compare these outcomes with general US population values.

methodsBetween November 2011 and February 2015, 859 patients with metastatic bone disease presented to our orthopaedic oncology clinic; 202 (24%) were included as they completed the EuroQOL-5 Dimension (EQ-5D

resultsYounger age (β regression coefficient [β], < 0.01; 95% CI, 0.00-0.01; p = 0.041), smoking (β, -0.12; 95% CI, -0.22 to -0.01; p = 0.026), pathologic fracture (β, -0.10; 95% CI, -0.18 to -0.02; p = 0.012), and being unemployed (β, -0.09; 95% CI, -0.17 to -0.02; p = 0.017) were associated with worse QOL. Current smoking status was associated with more pain interference (β, 6.0; 95% CI, 1.6-11; p = 0.008). Poor-prognosis cancers (β, 3.8; 95% CI, 0.37-7.2; p = 0.030), and pathologic fracture (β, 6.3; 95% CI, 2.5-7.2; p = 0.001) were associated with more anxiety. Being single (β, 5.9; 95% CI, 0.83-11; p = 0.023), and pathologic fracture (β, 4.4; 95% CI, 0.8-8.0; p = 0.017) were associated with depression. QOL scores (0.68 versus 0.85; p < 0.001), pain interference scores (65 versus 50; p < 0.001), and anxiety scores (53 versus 50; p = 0.011) were worse for patients with bone metastases compared with general US population values, whereas depression scores were comparable (48 versus 50; p = 0.171).

conclusionsImpending pathologic fractures should be treated promptly to prevent deterioration in QOL, anxiety, and depression. Our normative data can be used to compare and interpret results of similar patients or patient groups. Future studies could focus on specific cancers metastasizing to the bone, to further understand which patients are at risk for worse patient-reported outcomes. LEVEL OF EVIDENCE: Level III, prognostic study.