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DeBono Nathan L.,Daniels Robert D.,Beane Freeman Laura E.,Graber Judith M.,Hansen Johnni,Teras Lauren R.,Driscoll Tim,Kjaerheim Kristina,Demers Paul A.,Glass Deborah C.,Kriebel David,Kirkham Tracy L. 한국산업안전보건공단 산업안전보건연구원 2023 Safety and health at work Vol.14 No.2
Objective: We performed a meta-analysis of epidemiological results for the association between occupational exposure as a firefighter and cancer as part of the broader evidence synthesis work of the IARC Monographs program. Methods: A systematic literature search was conducted to identify cohort studies of firefighters followed for cancer incidence and mortality. Studies were evaluated for the influence of key biases on results. Random-effects meta-analysis models were used to estimate the association between ever-employment and duration of employment as a firefighter and risk of 12 selected cancers. The impact of bias was explored in sensitivity analyses. Results: Among the 16 included cancer incidence studies, the estimated meta-rate ratio, 95% confidence interval (CI), and heterogeneity statistic (I2) for ever-employment as a career firefighter compared mostly to general populations were 1.58 (1.14–2.20, 8%) for mesothelioma, 1.16 (1.08–1.26, 0%) for bladder cancer, 1.21 (1.12–1.32, 81%) for prostate cancer, 1.37 (1.03–1.82, 56%) for testicular cancer, 1.19 (1.07–1.32, 37%) for colon cancer, 1.36 (1.15–1.62, 83%) for melanoma, 1.12 (1.01–1.25, 0%) for non-Hodgkin lymphoma, 1.28 (1.02–1.61, 40%) for thyroid cancer, and 1.09 (0.92–1.29, 55%) for kidney cancer. Ever-employment as a firefighter was not positively associated with lung, nervous system, or stomach cancer. Results for mesothelioma and bladder cancer exhibited low heterogeneity and were largely robust across sensitivity analyses. Conclusions: There is epidemiological evidence to support a causal relationship between occupational exposure as a firefighter and certain cancers. Challenges persist in the body of evidence related to the quality of exposure assessment, confounding, and medical surveillance bias.
Kevin A. Hao,Robert J. Cueto,Christel Gharby,David Freeman,Joseph J. King,Thomas W. Wright,Diana Almader-Douglas,Bradley S. Schoch,Jean-David Werthel 대한견주관절학회 2024 대한견주관절의학회지 Vol.27 No.1
Background: Restoration of external (ER) and internal rotation (IR) after Grammont-style reverse shoulder arthroplasty (RSA) is often unreliable. The purpose of this systematic review was to evaluate the influence of RSA medio-lateral offset and subscapularis repair on axial rotation after RSA. Methods: We conducted a systematic review of studies evaluating axial rotation (ER, IR, or both) after RSA with a defined implant design. Medio-lateral implant classification was adopted from Werthel et al. Meta-analysis was conducted using a random-effects model. Results: Thirty-two studies reporting 2,233 RSAs were included (mean patient age, 72.5 years; follow-up, 43 months; 64% female). The subscapularis was repaired in 91% (n=2,032) of shoulders and did not differ based on global implant lateralization (91% for both, P=0.602). On meta-analysis, globally lateralized implants achieved greater postoperative ER (40° [36°–44°] vs. 27° [22°–32°], P<0.001) and postoperative improvement in ER (20° [15°–26°] vs. 10° [5°–15°], P<0.001). Lateralized implants with subscapularis repair or medialized implants without subscapularis repair had significantly greater postoperative ER and postoperative improvement in ER compared to globally medialized implants with subscapularis repair (P<0.001 for both). Mean postoperative IR was reported in 56% (n=18) of studies and achieved the minimum necessary IR in 51% of lateralized (n=325, 5 cohorts) versus 36% (n=177, 5 cohorts) of medialized implants. Conclusions: Lateralized RSA produces superior axial rotation compared to medialized RSA. Lateralized RSA with subscapularis repair and medialized RSA without subscapularis repair provide greater axial rotation compared to medialized RSA with subscapularis repair. Level of evidence: 2A.
Research Articles : Does PEAD Increase with Event-Specific Information Uncertainty?
( Joon Ho Lee ),( Michael Clement ),( Robert Freeman ) 한국회계학회 2015 회계학연구 Vol.40 No.2
We examine the empirical relation between event-specific information uncertainty and post-earnings-announcement-drift (PEAD). Since PEAD is largely attributed to delayed price reactions to the implications of announced earnings for future earnings, our primary thesis is that PEAD is associated with the uncertainty facing investors when they interpret earnings announcements. Accordingly, we examine the relation between PEAD and three proxies for event-specific uncertainty: pre-announcement to post-announcement change in dispersion of future earnings forecasts, the interval between earnings announcement and post-announcement forecast revisions, and the number of post-announcement forecast revisions. We argue that these three characteristics of analysts`` forecasts capture the uncertainty analysts face as they consider the implications of announced earnings for future earnings. For each proxy, we find that PEAD increases with signal uncertainty. In sum, our results indicate that drift in post-signal prices is less prevalent when analysts quickly agree on the implications of the signal for future earnings.