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Threshold Regression

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https://www.readbyqxmd.com/read/28645324/bmi-and-recommended-levels-of-physical-activity-in-school-children
#1
Phillipp Schwarzfischer, Martina Weber, Dariusz Gruszfeld, Piotr Socha, Veronica Luque, Joaquin Escribano, Annick Xhonneux, Elvira Verduci, Benedetta Mariani, Berthold Koletzko, Veit Grote
BACKGROUND: Physical activity (PA) and its health benefits are a continuous point of discussion. Recommendations for children's daily PA vary between guidelines. To better define the amount of PA necessary to prevent overweight and obesity in children, further research is needed. The present study investigates children's compliance to physical activity guidelines (PAGs) and the association between objectively measured PA and body mass index (BMI). METHODS: Participating children were 11 years old (n = 419) and part of the European CHOP trial, which was conducted in Germany, Belgium, Poland, Spain, Italy...
June 24, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28643919/mechanobehaviour-in-dolichofacial-and-brachyfacial-adolescents
#2
J C Nickel, A L Weber, P Covington Riddle, Y Liu, H Liu, L R Iwasaki
OBJECTIVES: To test whether mechanobehaviour (temporomandibular joint (TMJ) loads, jaw muscle use) was different between facial types and correlated with ramus height (Condylion-Gonion, mm). SETTING AND SAMPLE POPULATION: University of Missouri-Kansas City (UMKC) Orthodontic Clinic. Ten dolichofacial and ten brachyfacial adolescents (Sella-Nasion-Gonion-Gnathion (SN-GoGn) angles ≥37° and ≤27°, respectively) consented to participate. MATERIALS AND METHODS: Numerical models calculated TMJ loads for a range of static biting based on subjects' three-dimensional anatomy...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643629/faecal-immunochemical-tests-to-triage-patients-with-lower-abdominal-symptoms-for-suspected-colorectal-cancer-referrals-in-primary-care-a-systematic-review-and-cost-effectiveness-analysis
#3
Marie Westwood, Isaac Corro Ramos, Shona Lang, Marianne Luyendijk, Remziye Zaim, Lisa Stirk, Maiwenn Al, Nigel Armstrong, Jos Kleijnen
BACKGROUND: Colorectal cancer (CRC) is the third most common cancer in the UK. Presenting symptoms that can be associated with CRC usually have another explanation. Faecal immunochemical tests (FITs) detect blood that is not visible to the naked eye and may help to select patients who are likely to benefit from further investigation. OBJECTIVES: To assess the effectiveness of FITs [OC-Sensor (Eiken Chemical Co./MAST Diagnostics, Tokyo, Japan), HM-JACKarc (Kyowa Medex/Alpha Laboratories Ltd, Tokyo, Japan), FOB Gold (Sentinel/Sysmex, Sentinel Diagnostics, Milan, Italy), RIDASCREEN Hb or RIDASCREEN Hb/Hp complex (R-Biopharm, Darmstadt, Germany)] for primary care triage of people with low-risk symptoms...
May 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28643057/single-incision-laparoscopic-common-bile-duct-exploration-in-101-consecutive-patients-choledochotomy-transcystic-and-transfistulous-approaches
#4
Shu-Hung Chuang, Min-Chang Hung, Shih-Wei Huang, Dev-Aur Chou, Hurng-Sheng Wu
BACKGROUND: Laparoscopic surgery for choledocholithiasis is still evolving. Only a few reports of single-incision laparoscopic common bile duct exploration (LCBDE) have been published. METHODS: One hundred and one consecutive patients underwent single-incision LCBDE (SILCBDE) by one surgeon with straight instruments during a 42-month period. RESULTS: Choledochotomies were performed on 61 patients (60.4%). The success rate of intrahepatic duct exploration was 68...
June 22, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28640854/maternal-bmi-and-diabetes-in-pregnancy-investigating-variations-between-ethnic-groups-using-routine-maternity-data-from-london-uk
#5
Erin Nishikawa, Laura Oakley, Paul T Seed, Pat Doyle, Eugene Oteng-Ntim
OBJECTIVE: To investigate the ethnicity-specific association between body mass index (BMI) and diabetes in pregnancy, with a focus on the appropriateness of using BMI cut-offs to identify pregnant women at risk of diabetes. STUDY DESIGN: Analysis of routinely-collected data from a maternity unit in London, UK. Data were available on 53 264 women delivering between 2004 and 2012. Logistic regression was used to explore the association between diabetes in pregnancy and BMI among women of different ethnicities, and adjusted probability estimates were used to derive risk equivalent cut-offs...
2017: PloS One
https://www.readbyqxmd.com/read/28640546/treatment-at-high-volume-facilities-and-academic-centers-is-independently-associated-with-improved-survival-in-patients-with-locally-advanced-head-and-neck-cancer
#6
John M David, Allen S Ho, Michael Luu, Emi J Yoshida, Sungjin Kim, Alain C Mita, Kevin S Scher, Stephen L Shiao, Mourad Tighiouart, Zachary S Zumsteg
BACKGROUND: The treatment of head and neck cancers is complex and associated with significant morbidity, requiring multidisciplinary care and physician expertise. Thus, facility characteristics, such as clinical volume and academic status, may influence outcomes. METHODS: The current study included 46,567 patients taken from the National Cancer Data Base who were diagnosed with locally advanced invasive squamous cell carcinomas of the oropharynx, larynx, and hypopharynx and were undergoing definitive radiotherapy...
June 22, 2017: Cancer
https://www.readbyqxmd.com/read/28638026/-analysis-of-the-efficacy-of-reflexology-in-the-complex-treatment-of-chronic-migraine
#7
M I Safonov, M V Naprienko
AIM: To evaluate the effect of different reflexology techniques on main clinical indices of patients with chronic migraine, the number of analgesics used and dynamics of chronic migraine comorbid disorders. MATERIAL AND METHODS: The study included 84 patients (60 women (71.5%) and 24 men (28.5%)), aged from 18 to 63 years, with a diagnosis of chronic migraine. Patients were randomized in 4 groups - Su Jok (n=22), acupuncture (n=22), electroacupuncture (n=20), control (n=20)...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28637202/adherence-to-antipsychotic-medication-and-criminal-recidivism-in-a-canadian-provincial-offender-population
#8
Stefanie N Rezansoff, Akm Moniruzzaman, Seena Fazel, Lawrence McCandless, Julian M Somers
Preliminary evidence suggests that adherence to antipsychotic medication reduces criminal recidivism among patients diagnosed with schizophrenia. However, existing studies operationalize antipsychotic adherence as a binary variable (usually using a threshold of ≥80%), which does not reflect the prevalence of suboptimal adherence in real-world settings. The purpose of the current analysis was to investigate the association between successive ordinal levels of antipsychotic adherence and criminal recidivism in a well-defined sample of offenders diagnosed with schizophrenia (n = 11462)...
June 20, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28634684/heterogeneity-index-evaluated-by-slope-of-linear-regression-on-18-f-fdg-pet-ct-as-a-prognostic-marker-for-predicting-tumor-recurrence-in-pancreatic-ductal-adenocarcinoma
#9
Yong-Il Kim, Yong Joong Kim, Jin Chul Paeng, Gi Jeong Cheon, Dong Soo Lee, June-Key Chung, Keon Wook Kang
PURPOSE: (18)F-Fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) has been investigated as a method to predict pancreatic cancer recurrence after pancreatic surgery. We evaluated the recently introduced heterogeneity indices of (18)F-FDG PET/CT used for predicting pancreatic cancer recurrence after surgery and compared them with current clinicopathologic and (18)F-FDG PET/CT parameters. METHODS: A total of 93 pancreatic ductal adenocarcinoma patients (M:F = 60:33, mean age = 64...
June 20, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28634172/identifying-an-oxygenation-index-threshold-for-increased-mortality-in-acute-respiratory-failure
#10
Brandon G Hammond, Pamela Garcia-Filion, Paul Kang, Mounica Y Rao, Brigham C Willis, Heidi J Dalton
BACKGROUND: The objective of this work was to examine current oxygenation index (OI) data and outcomes using electronic medical record data to identify a specific OI value associated with mortality. METHODS: This study was a retrospective electronic medical record data review from the pediatric ICU of Phoenix Children's Hospital, with data mining for variables to calculate OIs on subjects age 1 month to 20 y mechanically ventilated >24 h, excluding those with known intracardiac shunts or cyanotic heart disease...
June 20, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28633374/cohort-study-of-preoperative-blood-pressure-and-risk-of-30-day-mortality-after-elective-non-cardiac-surgery
#11
S Venkatesan, P R Myles, H J Manning, A M Mozid, C Andersson, M E Jørgensen, J G Hardman, S R Moonesinghe, P Foex, M Mythen, M P W Grocott, R D Sanders
Background: Preoperative blood pressure (BP) thresholds associated with increased postoperative mortality remain unclear. We investigated the relationship between preoperative BP and 30-day mortality after elective non-cardiac surgery. Methods: We performed a cohort study of primary care data from the UK Clinical Practice Research Datalink (2004-13). Parsimonious and fully adjusted multivariable logistic regression models, including restricted cubic splines for numerical systolic and diastolic BP, for 30-day mortality were constructed...
June 15, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28632918/predicting-inpatient-hypoglycaemia-in-hospitalized-patients-with-diabetes-a-retrospective-analysis-of-9584-admissions-with-diabetes
#12
K Stuart, N J Adderley, T Marshall, G Rayman, A Sitch, S Manley, S Ghosh, K A Toulis, K Nirantharakumar
AIMS: To explore whether a quantitative approach to identifying hospitalized patients with diabetes at risk of hypoglycaemia would be feasible through incorporation of routine biochemical, haematological and prescription data. METHODS: A retrospective cross-sectional analysis of all diabetic admissions (n=9584) from 1 January 2014 to 31 December 2014 was performed. Hypoglycaemia was defined as a blood glucose level of <4 mmol/l. The prediction model was constructed using multivariable logistic regression, populated by clinically important variables and routine laboratory data...
June 20, 2017: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/28629874/neural-activity-during-attentional-conflict-predicts-reduction-in-tinnitus-perception-following-rtms
#13
G A James, J D Thostenson, G Brown, G Carter, H Hayes, S P Tripathi, D J Dobry, R B Govindan, J L Dornhoffer, D K Williams, C D Kilts, M S Mennemeier
BACKGROUND: Subjective idiopathic tinnitus is an intrusive, distracting, and potentially disabling disorder characterized by phantom perception of sounds. Although tinnitus has no approved pharmacologic treatment, recent evidence supports the use of repetitive transcranial magnetic stimulation (rTMS) to alleviate tinnitus symptoms. OBJECTIVE/HYPOTHESIS: Repetitive TMS delivered over the middle superior temporal gyrus (STG) may alter ratings of tinnitus awareness and annoyance more than loudness due to change in attentional processing...
June 2, 2017: Brain Stimulation
https://www.readbyqxmd.com/read/28629566/pi-rads-version-2-preoperative-role-in-the-detection-of-normal-sized-pelvic-lymph-node-metastasis-in-prostate-cancer
#14
Sung Yoon Park, Su-Jin Shin, Dae Chul Jung, Nam Hoon Cho, Young Deuk Choi, Koon Ho Rha, Sung Joon Hong, Young Taik Oh
OBJECTIVES: To analyze whether Prostate Imaging Reporting and Data System (PI-RADSv2) scores are associated with a risk of normal-sized pelvic lymph node metastasis (PLNM) in prostate cancer (PCa). MATERIALS AND METHODS: A consecutive series of 221 patients who underwent magnetic resonance imaging and radical prostatectomy with pelvic lymph node dissection (PLND) for PCa were retrospectively analyzed under the approval of institutional review board in our institution...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28628529/appraising-viral-load-thresholds-and-adherence-support-recommendations-in-the-world-health-organization-guidelines-for-detection-and-management-of-virologic-failure
#15
Suzanne M McCluskey, Yap Boum, Nicholas Musinguzi, Jessica E Haberer, Jeffrey N Martin, Peter W Hunt, Vincent C Marconi, David R Bangsberg, Mark J Siedner
BACKGROUND: The World Health Organization defines HIV virologic failure as two consecutive viral loads >1,000 copies/mL, measured 3-6 months apart with interval adherence support. We sought to empirically evaluate these guidelines using data from an observational cohort. SETTING: The Uganda AIDS Rural Treatment Outcomes study observed adults with HIV in southwestern Uganda from the time of antiretroviral therapy (ART) initiation, and monitored adherence with electronic pill bottles...
June 15, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28627334/wheelchair-pushing-and-turning-lumbar-spine-and-shoulder-loads-and-recommended-limits
#16
Eric B Weston, Safdar N Khan, William S Marras
The objective of this study was to determine how simulated manual wheelchair pushing influences biomechanical loading to the lumbar spine and shoulders. 62 subjects performed simulated wheelchair pushing and turning in a laboratory. An electromyography-assisted biomechanical model was used to estimate spinal loads. Moments at the shoulder joint, external hand forces, and net turning torque were also assessed. Multiple linear regression techniques were employed to develop biomechanically-based wheelchair pushing guidelines relating resultant hand force or net torque to spinal load...
June 17, 2017: Ergonomics
https://www.readbyqxmd.com/read/28627004/utility-of-the-urine-reagent-strip-leukocyte-esterase-assay-for-the-diagnosis-of-meningitis-in-resource-limited-settings-meta-analysis
#17
REVIEW
William Bortcosh, Mark Siedner, Ryan W Carroll
OBJECTIVE: Diagnosis of bacterial meningitis often requires cytometry, chemistry, and/or microbiologic culture capabilities. Unfortunately, laboratory resources in low resource settings (LRS) often lack the capacity to perform these studies. We sought to determine whether the presence of white blood cells in CSF detected by commercially available urine reagent strips could aid in the diagnosis of bacterial meningitis. METHODS: We searched PubMed for studies published between 1980 - 2016 that investigated the use of urine reagent strips to identify cerebrospinal fluid (CSF) pleocytosis...
June 19, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28625818/quantitative-assessment-of-lung-and-bladder-cancer-risk-and-oral-exposure-to-inorganic-arsenic-meta-regression-analyses-of-epidemiological-data
#18
Heather N Lynch, Ke Zu, Erin M Kennedy, Thuy Lam, Xiaobin Liu, Daniella M Pizzurro, Christine T Loftus, Lorenz R Rhomberg
Inorganic arsenic (iAs) in drinking water varies geographically and is prevalent worldwide. While exposures in the US are generally low, there are some areas with higher levels of naturally occurring iAs (potentially >100μg/L) where residents rely on unregulated drinking water wells. Much of the evidence on the association between iAs and cancer comes from epidemiological studies conducted in South American and Asian populations. These populations have generally been exposed to much higher levels of iAs and have differing underlying characteristics, both of which make comparing them to Western populations difficult...
June 16, 2017: Environment International
https://www.readbyqxmd.com/read/28624977/interaction-of-mammographic-breast-density-with-menopausal-status-and-postmenopausal-hormone-use-in-relation-to-the-risk-of-aggressive-breast-cancer-subtypes
#19
Lusine Yaghjyan, Rulla M Tamimi, Kimberly A Bertrand, Christopher G Scott, Matthew R Jensen, V Shane Pankratz, Kathy Brandt, Daniel Visscher, Aaron Norman, Fergus Couch, John Shepherd, Bo Fan, Yunn-Yi Chen, Lin Ma, Andrew H Beck, Steven R Cummings, Karla Kerlikowske, Celine M Vachon
PURPOSE: We examined the associations of mammographic breast density with breast cancer risk by tumor aggressiveness and by menopausal status and current postmenopausal hormone therapy. METHODS: This study included 2596 invasive breast cancer cases and 4059 controls selected from participants of four nested case-control studies within four established cohorts: the Mayo Mammography Health Study, the Nurses' Health Study, Nurses' Health Study II, and San Francisco Mammography Registry...
June 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28623483/normal-appearing-white-matter-permeability-a-marker-of-inflammation-and-information-processing-speed-deficit-among-relapsing-remitting-multiple-sclerosis-patients
#20
Eldar Eftekhari, Seyed-Parsa Hojjat, Rita Vitorino, Timothy J Carroll, Charles Grady Cantrell, Liesly Lee, Matthew W Taylor, Sarah A Morrow, Haddas Benhabib, Richard I Aviv, Andrea Kassner
PURPOSE: Blood-brain barrier breakdown (BBBB) occurs in relapsing remitting multiple sclerosis (RRMS). Relative recirculation (rR), a BBBB surrogate, may show inflammation undetectable by gadolinium. We compared normal appearing white matter (NAWM) rR in patients with and without disability measured with Symbol Digit Modalities Test and the Expanded Disability Status Scale (EDSS). METHODS: Thirty-nine RRMS patients were prospectively recruited and classified as impaired or non-impaired based on the SDMT and EDSS threshold ≥3...
June 16, 2017: Neuroradiology
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