Results 61 to 70 of about 44,030,521 (374)

Impact of Sigmoidoscopy and Colonoscopy on Colorectal Cancer Incidence and Mortality: An Evidence-Based Review of Published Prospective and Retrospective Studies

open access: yesIntestinal Research, 2014
Screening for colorectal cancer (CRC) using sigmoidoscopy or colonoscopy is now common in many developed countries. This concise, evidence-based review looks at the impact of sigmoidoscopy or colonoscopy screening on CRC incidence, CRC mortality and ...
O. Lin, R. Kozarek, J. Cha
semanticscholar   +1 more source

A single-center, retrospective study of COVID-19 features in children: a descriptive investigation

open access: yesBMC Medicine, 2020
Background Compared to adults, there are relatively few studies on COVID-19 infection in children, and even less focusing on the unique features of COVID-19 in children in terms of laboratory findings, locations of computerized tomography (CT) lesions ...
Huijing Ma   +11 more
semanticscholar   +1 more source

Predictive factors for prolonged hospital stay after retropubic radical prostatectomy in a high-volume teaching center

open access: yesInternational Brazilian Journal of Urology
Objective: To evaluate the length hospital stay and predictors of prolonged hospitalization after RRP performed in a high-surgical volume teaching institution, and analyze the rate of unplanned visits to the office, emergency care, hospital readmissions ...
Rafael F. Coelho   +8 more
doaj   +1 more source

Retrospective-prospective symmetry in the likelihood and Bayesian analysis of case-control studies

open access: yes, 2013
Prentice & Pyke (1979) established that the maximum likelihood estimate of an odds-ratio in a case-control study is the same as would be found by running a logistic regression: in other words, for this specific target the incorrect prospective model is ...
Byrne, Simon P. J., Dawid, A. Philip
core   +1 more source

Freezing and chemical preservatives alter the stable isotope values of carbon and nitrogen of the Asiatic clam (Corbicula fluminea) [PDF]

open access: yes, 2011
We tested the impacts of most common sample preservation methods used for aquatic sample materials on the stable isotope ratios of carbon and nitrogen in clams, a typical baseline indicator organism for many aquatic food web studies utilising stable ...
Aurélia Martino   +22 more
core   +4 more sources

Construct validity of the Nepalese school leaving english reading test [PDF]

open access: yes, 2018
There has been a steady interest in investigating the validity of language tests in the last decades. Despite numerous studies on construct validity in language testing, there are not many studies examining the construct validity of a reading test.
Dawadi, Saraswati, Shrestha, Prithvi N.
core   +1 more source

MET and NF2 alterations confer primary and early resistance to first‐line alectinib treatment in ALK‐positive non‐small‐cell lung cancer

open access: yesMolecular Oncology, EarlyView.
Alectinib resistance in ALK+ NSCLC depends on treatment sequence and EML4‐ALK variants. Variant 1 exhibited off‐target resistance after first‐line treatment, while variant 3 and later lines favored on‐target mutations. Early resistance involved off‐target alterations, like MET and NF2, while on‐target mutations emerged with prolonged therapy.
Jie Hu   +11 more
wiley   +1 more source

Nitrates for the Management of Acute Heart Failure Syndromes, A Systematic Review [PDF]

open access: yes, 2016
© The Author(s) 2016Intravenous nitrates are widely used in the management of acute heart failure syndrome (AHFS) yet with lack of robust evidence to support their use.
Farag, Mohamed   +2 more
core   +2 more sources

Agreement Between Prospective and Retrospective Measures of Childhood Maltreatment

open access: yesJAMA psychiatry, 2019
Key Points Question What is the agreement between prospective and retrospective measures of childhood maltreatment? Findings This systematic review and meta-analysis of 16 unique studies and 25 471 unique participants found poor agreement between ...
J. Baldwin   +3 more
semanticscholar   +1 more source

Evaluation of KRAS and NRAS mutations in metastatic colorectal cancer: an 8‐year study of 10 754 patients in Turkey

open access: yesMolecular Oncology, EarlyView.
This nationwide study evaluated KRAS and NRAS mutations in 10 754 Turkish patients with metastatic colorectal cancer. The results revealed a mutation frequency of 51.1%, with 46.6% having KRAS mutations, 4.5% having NRAS mutations, and 48.5% being wild‐type for both.
Gozde Kavgaci   +6 more
wiley   +1 more source

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