The efficacy of interventions to improve psychosocial outcomes following surgical treatment for breast cancer:A systematic review and meta-analysis

Objective Breast cancer is the most commonly diagnosed cancer in women across the world. The majority of women diagnosed with the disease undergo surgery, which is often associated with significant psychosocial morbidity. The aim of this meta-analysis was to identify the efficacy of psychosocial interventions for women following breast cancer surgery. Method A comprehensive literature search was undertaken using keyword and subject headings within 7 databases. Included studies employed a quantitative methodology presenting empirical findings focusing on interventions for female breast cancer patients following surgery. Results Thirty-two studies were included and based on conventional values of effect sizes. Small effects emerged for the efficacy of psychosocial interventions in relation to anxiety (Hedges g = 0.31), depression (0.38), quality of life (0.40), mood disturbance (0.31), distress (0.27), body image (0.40), self-esteem (0.35), and sexual functioning (0.22). A moderate to large effect emerged for the efficacy of interventions in promoting improvements in sleep disturbance (0.67). Clear evidence emerged for the efficacy of cognitive behavioral therapy in promoting improvements in anxiety, depression, and quality of life. Conclusion This is the first meta-analysis to demonstrate the efficacy of interventions on a range of psychosocial outcomes following breast cancer surgery. The meta-analysis highlighted that cognitive behavioral therapy was consistently the most effective psychosocial intervention promoting improvements in anxiety, depression, and quality of life. However, there are shortcomings in existing studies; the length of the follow-up period is typically short and the generalizability of findings was limited by small samples, both of which should be addressed in future studies

Effects of low power laser irradiation on bone healing in animals: a meta-analysis

<p>Abstract</p> <p>Purpose</p> <p>The meta-analysis was performed to identify animal research defining the effects of low power laser irradiation on biomechanical indicators of bone regeneration and the impact of dosage.</p> <p>Methods</p> <p>We searched five electronic databases (MEDLINE, EMBASE, PubMed, CINAHL, and Cochrane Database of Randomised Clinical Trials) for studies in the area of laser and bone healing published from 1966 to October 2008. Included studies had to investigate fracture healing in any animal model, using any type of low power laser irradiation, and use at least one quantitative biomechanical measures of bone strength. There were 880 abstracts related to the laser irradiation and bone issues (healing, surgery and assessment). Five studies met our inclusion criteria and were critically appraised by two raters independently using a structured tool designed for rating the quality of animal research studies. After full text review, two articles were deemed ineligible for meta-analysis because of the type of injury method and biomechanical variables used, leaving three studies for meta-analysis. Maximum bone tolerance force before the point of fracture during the biomechanical test, 4 weeks after bone deficiency was our main biomechanical bone properties for the Meta analysis.</p> <p>Results</p> <p>Studies indicate that low power laser irradiation can enhance biomechanical properties of bone during fracture healing in animal models. Maximum bone tolerance was statistically improved following low level laser irradiation (average random effect size 0.726, 95% CI 0.08 - 1.37, p 0.028). While conclusions are limited by the low number of studies, there is concordance across limited evidence that laser improves the strength of bone tissue during the healing process in animal models.</p