Machine Learning to Develop and Internally Validate a Predictive Model for Post-operative Delirium in a Prospective, Observational Clinical Cohort Study of Older Surgical Patients
Annie M. RacineDouglas TommetMadeline D’AquilaTamara G. FongYun GouPatricia A. TabloskiEran D. MetzgerTammy T. HshiehEva M. SchmittSarinnapha M. VasunilashornLisa KunzeKamen VlassakovAyesha AbdeenJeffrey K. LangeBrandon E. EarpBradford C. DickersonEdward R. MarcantonioJon A. SteingrimssonThomas G. TravisonSharon K. InouyeRichard N. JonesSteven E. ArnoldBradford C. DickersonTamara G. FongRichard N. JonesTowia A. LibermannThomas G. TravisonSimon T. DillonJacob M. HookerTammy T. HshiehLong NgoHasan H. OtuAnnie M. RacineAlexandra TouroutoglouSarinnapha M. VasunilashornDouglas AyresGregory W. BrickFan ChenRobert G. DavisJacob M. DrewRichard IorioFulton KornackMichael J. WeaverAnthony WebberRichard M. WilkDavid ShaffBrett ArmstrongAngelee BandaSylvie BertrandMadeline D’AquilaJacqueline GallagherBaileigh G. HightowerShannon MalloyJacqueline NeeChloe K. NobuharaAbigail OverstreetBianca A. TrombettaBaileigh G. HightowerDavid UrickGuoquan XuGrae ArabaszMichael BrickhouseRegan ButterfieldShirley HsuSara MakaretzJudit SoreFan ChenSabrina CarretieTed GruenKatherine Tasker
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Abstract Dairy product intake was suggested to reduce the risk of gastrointestinal cancers. This study investigated the association between dairy product intake and the risk of pancreatic cancer (PAC) using a prospective cohort study and meta-analysis of prospective cohort studies. First, we included 59 774 people aged 40–79 years from the Japan Collaborative Cohort Study (JACC Study). The Cox regression was used to compute the hazard ratios (HR) and 95 % CI of incident PAC for individuals who reported the highest intakes of milk, cheese and yogurt compared with not consuming the corresponding dairy products. Then, we combined our results with those from other four prospective cohort studies that were eligible after searching several databases, in a meta-analysis, using the fixed-effects model before evaluating publication bias and heterogeneity across studies. In the JACC Study, the highest v . no intakes of milk, cheese and yogurt were not associated with the reduced risk of PAC after a median follow-up of 13·4 years: HR (95 % CI) = 0·93 (0·64, 1·33), 0·91 (0·51, 1·62) and 0·68 (0·38, 1·21), respectively. The results did not significantly change in the meta-analysis: 0·95 (0·82, 1·11) for milk, 1·16 (0·87, 1·55) for cheese and 0·91 (0·79, 1·05) for yogurt. The meta-analysis showed no signs of publication bias or heterogeneity across studies. To conclude, consumption of milk, cheese and yogurt was not associated with the risk of PAC either in the JACC Study or the meta-analysis.
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Background Several case-control studies have suggested that passive smoking may increase the incidence of female breast cancer. However, the results of cohort studies have been inconsistent in establishing an association. The present study evaluated the association between passive smoking and incidence of female breast cancer through a meta-analysis of prospective cohort studies. Methods Relevant articles published before August 2012 were identified by searching the electronic databases PubMed, Embase, and Web of Science. Pooled relative risks (RRs) were determined with either a fixed or random effects model and were used to assess the strength of the association. Sensitivity and subgroup analyses according to ethnicity, menopausal status, and the period and place of exposure to passive smoking were also performed. Results Ten prospective cohort studies involving 782 534 female non-smokers were included in the meta-analysis and 14 831 breast cancer cases were detected. Compared with the women without exposure to passive smoking, the overall combined RR of breast cancer was 1.01 (95% confidence interval: 0.96 to 1.06, P = 0.73) among women with exposure to passive smoking. Similar results were achieved through the subgroup analyses. No evidence of publication bias was observed. Conclusion The results suggest that passive smoking may not be associated with increased incidence of breast cancer. However, the present conclusion should be considered carefully and confirmed with further studies.
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Read the full review for this Faculty Opinions recommended article: Fruit and Vegetable Intake and Mortality: Results From 2 Prospective Cohort Studies of US Men and Women and a Meta-Analysis of 26 Cohort Studies.
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Dairy intake was suggested to reduce the risk of gastrointestinal cancers. This study investigated the association between dairy intake and the risk of pancreatic cancer (PAC) using a prospective cohort study and meta-analysis of prospective cohort studies. First, we included 59,774 people aged 40-79 years from the Japan Collaborative Cohort Study (JACC Study). The Cox regression was used to compute the hazard ratios (HRs) and 95% confidence intervals (CIs) of incident PAC for individuals who reported the highest intakes of milk, cheese, and yogurt compared with not consuming the corresponding dairy products. Then, we combined our results with those from other four prospective cohort studies that were eligible after searching several databases, in a meta-analysis, using the fixed-effects model before evaluating publication bias and heterogeneity across studies. In the JACC study, the highest versus no intakes of milk, cheese, and yogurt were not associated with the reduced risk of PAC after a median follow-up of 13.4 years: HRs (95% CIs)= 0.93 (0.64, 1.33), 0.91 (0.51, 1.62), and 0.68 (0.38, 1.21), respectively. The results did not significantly change in the meta-analysis: 0.95 (0.82, 1.11) for milk, 1.16 (0.87, 1.55) for cheese, and 0.91 (0.79, 1.05) for yogurt. The meta-analysis showed no signs of publication bias or heterogeneity across studies. To conclude, consumption of milk, cheese, and yogurt was not associated with the risk of PAC either in the JACC study or the meta-analysis.
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For better management of rheumatoid arthritis (RA) patients, we need information both from well-designed clinical trials, such as randomized controlled trials, and from observational cohorts. Observational cohort study has not been developed in Japanese RA patients; however, two cohorts, IORRA (formerly J-ARAMIS) from 2000 and NinJa by iR-net from 2002, have been established. These two cohorts are an important source not only for better management of Japanese RA patients but also for solutions to a variety of issues concerning RA clinical practice in general. In this minireview, necessities of observational cohort studies are discussed.
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Journal Article Potential impact of observational cohort studies in Japan on rheumatoid arthritis research and practice Get access Hisashi Yamanaka, Hisashi Yamanaka Institute of Rheumatology, Tokyo Women's Medical University, 10-22 Kawada-cho, Shinjuku-ku, Tokyo 162-0054, Japan Correspondence to: Hisashi Yamanaka, Institute of Rheumatology, Tokyo Women's Medical University, 10-22 Kawada-cho, Shinjuku-ku, Tokyo 162-0054, Japan Tel. +81-3-5269-1725; Fax +81-3-5269-1726 e-mail: yamanaka@ior.twmu.ac.jp Search for other works by this author on: Oxford Academic Google Scholar Shigeto Tohma Shigeto Tohma Clinical Research Center for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Sagamihara, Japan Search for other works by this author on: Oxford Academic Google Scholar Modern Rheumatology, Volume 16, Issue 2, 1 April 2006, Pages 75–76, https://doi.org/10.3109/s10165-006-0464-8 Published: 01 April 2006 Article history Received: 24 January 2006 Accepted: 20 February 2006 Published: 01 April 2006
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