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(3)H activity comparison between FTMC, VNIIM and LNE-LNHB.

https://arctichealth.org/en/permalink/ahliterature278451
Source
Appl Radiat Isot. 2016 Mar;109:41-3
Publication Type
Article
Date
Mar-2016
Author
Philippe Cassette
Paulius Butkus
Arunas Gudelis
Tatiana Shilnikova
Source
Appl Radiat Isot. 2016 Mar;109:41-3
Date
Mar-2016
Language
English
Publication Type
Article
Keywords
France
Internationality
Laboratories - standards
Lithuania
Nuclear Medicine - standards
Radiation Dosage
Radiometry - standards
Reference Values
Reproducibility of Results
Russia
Scintillation Counting
Sensitivity and specificity
Tritium - analysis - standards
Abstract
An activity comparison of tritiated water was organized in 2013 between 3 laboratories: FTMC (Lithuania), LNE-LNHB (France) and VNIIM (Russia). The solution was prepared by LNHB and ampoules were sent to the others laboratories. This solution was standardized in terms of activity per unit mass by participant laboratories using the Triple to Double Coincidence Ratio (TDCR) method in liquid scintillation counting (LSC). The tritiated water solution is traceable to the solution prepared by LNHB for the CCRI(II)-K2.H-3 2009 (3)H international comparison.
PubMed ID
26651170 View in PubMed
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The 3 mm skin prick test (SPT) threshold criterion is not reliable for Tyrophagus putrescentiae: the re-evaluation of SPT criterion to dust mites.

https://arctichealth.org/en/permalink/ahliterature71486
Source
Allergy. 2002 Dec;57(12):1187-90
Publication Type
Article
Date
Dec-2002
Author
B. Kanceljak-Macan
J. Macan
D. Plavec
T. Klepac
S. Milkovic-Kraus
Author Affiliation
Institute for Medical Research and Occupational Health, Zagreb, Croatia.
Source
Allergy. 2002 Dec;57(12):1187-90
Date
Dec-2002
Language
English
Publication Type
Article
Keywords
Adult
Antibody Specificity - immunology
Comparative Study
Croatia
Cross Reactions - immunology
Dermatophagoides farinae - immunology
Dermatophagoides pteronyssinus - immunology
Female
Humans
Immunoglobulin E - blood - immunology
Male
Middle Aged
Proteins - immunology
Pyroglyphidae - immunology
Regression Analysis
Reproducibility of Results
Sensitivity and specificity
Skin Tests - standards
Urban health
Abstract
BACKGROUND: The mean wheal diameter >/= 3 mm is the usual criterion for positive skin prick test (SPT) reaction to dust mites. The study assessed the accuracy of this SPT criterion with respect to specific IgE values of above 0.35 kUA/l (+ sIgE). METHODS: Specific IgE (ImmunoCAP, Pharmacia AB Diagnostics, Uppsala, Sweden) and standard SPT to Dermatophagoides pteronyssinus (DP) and farinae (DF), Lepidoglyphus destructor (LD) and Tyrophagus putrescentiae (TP) (ALK, Hørsholm, Denmark) were performed in a random sample of 457 subjects, of whom 273 men (mean age 35.3 +/- 11.0 years) and 184 women (mean age 37.9 +/- 9.5 years). Statistical analysis was performed using the chi-square test, regression analysis and discriminant analysis. RESULTS: When the mean wheal diameter of >/= 3 mm was considered positive (+ SPT), the correlation between + SPT and + sIgE was 0.47 for DP (P
PubMed ID
12464048 View in PubMed
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6-bit and 8-bit digital radiography for detecting simulated periodontal lesions.

https://arctichealth.org/en/permalink/ahliterature51165
Source
Oral Surg Oral Med Oral Pathol. 1994 Apr;77(4):406-11
Publication Type
Article
Date
Apr-1994
Author
B. Pass
A J Furkart
S B Dove
W D McDavid
P H Gregson
Author Affiliation
Division of Oral and Maxillofacial Radiology, Faculty of Dentistry, Dalhousie University, Halifax, Nova Scotia, Canada.
Source
Oral Surg Oral Med Oral Pathol. 1994 Apr;77(4):406-11
Date
Apr-1994
Language
English
Publication Type
Article
Keywords
Analysis of Variance
Comparative Study
Contrast Sensitivity
Dental Caries - radiography
Humans
Mandible - radiography
Periodontal Diseases - radiography
ROC Curve
Radiographic Image Enhancement - methods
Reproducibility of Results
Abstract
The purpose of this study was to compare the diagnostic performance of a digital radiography system that uses 6- and 8-bit displays with conventional D-speed film for the detection of simulated periodontal bone lesions. Eleven human hemimandibles were used as specimens. Simulated lesions were created at the buccal cortical plate in the marginal bone area with the use of a round bur 1.4 mm in diameter. Lesions were created in a defined sequence to preclude visual cues as to the depth of the lesions. Lesion size progressed in 0.5 mm increments. At each stage the mandibles were imaged with a Sens-A-Ray system (REGAM Medical Systems AB, Sundsvall, Sweden) and D-speed film. Exposure parameters for each specimen/receptor combination were standardized by either the mean optical density or mean gray value at the approximal crestal bone area. Film images and digital images displayed with 64 and 256 gray levels were presented to six observers for evaluation. Observers were ask to rate their confidence as to the presence or absence of a lesion using a 5-point confidence scale. A total of 96 lesion sites and 96 control sites were presented to the observers. Receiver operating characteristic curves were generated for each system. The area under the curve was used as the index of diagnostic accuracy. The mean receiver operating characteristic areas for 6-bit and 8-bit displays and D-speed film were 0.746 +/- 0.043, 0.717 +/- 0.056 and 0.742 +/- 0.059, respectively. Analysis of variance was used to compare the means. No statistical difference was found between any of the three image displays (p > 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
PubMed ID
8015807 View in PubMed
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The 6-min walk test: responses in healthy Canadians aged 45 to 85 years.

https://arctichealth.org/en/permalink/ahliterature130789
Source
Appl Physiol Nutr Metab. 2011 Oct;36(5):643-9
Publication Type
Article
Date
Oct-2011
Author
Kylie Hill
Lisa M Wickerson
Lynda J Woon
Afshin Heidar Abady
Tom J Overend
Roger S Goldstein
Dina Brooks
Author Affiliation
Department of Respirology, West Park Healthcare Centre, Toronto, Ontario, Canada.
Source
Appl Physiol Nutr Metab. 2011 Oct;36(5):643-9
Date
Oct-2011
Language
English
Publication Type
Article
Keywords
Aged
Aged, 80 and over
Algorithms
Exercise Test
Female
Heart rate
Humans
Male
Middle Aged
Ontario
Oxygen consumption
Physical Fitness
Reference Values
Reproducibility of Results
Respiration
Respiratory Rate
Sex Characteristics
Tidal Volume
Time Factors
Walking
Abstract
We sought to describe responses to the 6-min walk test (6MWT) in healthy Canadian adults in order to facilitate interpretation of its results in patient populations. Seventy-seven healthy Canadians aged 45 to 85 years (65 ± 11 years, 40 females) completed this study. During a single visit, three 6MWTs were undertaken. The main outcome measure was 6-min walk distance (6MWD). Age, gender, height, and weight were recorded. In 61 (79%) participants, cardiorespiratory variables were collected during the third 6MWT using a calibrated portable gas analysis system. The 6MWD increased between the first and second test (615 ± 96 to 639 ± 98 m; p
PubMed ID
21967531 View in PubMed
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A 6-year longitudinal study of caries in teenagers and the effect of "dropouts" on the findings.

https://arctichealth.org/en/permalink/ahliterature139575
Source
Community Dent Health. 2010 Sep;27(3):172-7
Publication Type
Article
Date
Sep-2010
Author
I B Arnadóttir
W P Holbrook
H. Agústsdóttir
S R Saemundsson
Author Affiliation
Faculty of Odontology, University of Iceland Reykjavík, Iceland. iarnad@hi.is
Source
Community Dent Health. 2010 Sep;27(3):172-7
Date
Sep-2010
Language
English
Publication Type
Article
Keywords
Adolescent
Adolescent Behavior
Confounding Factors (Epidemiology)
DMF Index
Dental Caries - epidemiology - radiography
Fisheries
Humans
Iceland - epidemiology
Incidence
Longitudinal Studies
Patient Dropouts - psychology - statistics & numerical data
Prevalence
Questionnaires
Reproducibility of Results
Research Subjects - psychology
Risk-Taking
Rural Population
Urban Population
Young Adult
Abstract
To investigate attrition of subjects in a longitudinal study of caries.
A radiographic study of caries and caries-associated factors was carried out in subjects, initially aged 14 years, and followed-up for six years. Attrition of subjects occurred at the last stage of the study.
A nationwide survey of subjects living in fishing, rural farming, and urban communities in Iceland.
A sub-sample of the nationwide random sample comprising 150 subjects was investigated using bitewing radiographs and a structured questionnaire to determine caries-risk factors. Subjects were re-examined at 16 years and 20 years using the same methods.
Mean caries increment from 14-16 years was 3.0 lesions (1.5 lesions/subject/year) but reduced to 2.6 lesions (0.7 lesions/subject/ year) by 20y. The proportion of subjects found to be caries-free at 14 years, 16 years and 20 years, was 29%, 17% and 10%, respectively. "Dropouts" from this study occurred mostly after 16 years. Analysis of subjects dropping out showed that they were least likely to be from the rural farming community but most likely from the fishing community. Those dropping out attended their dentist less frequently, had a higher consumption of carbonated drinks and a higher prevalence and incidence of caries by 16 years.
Subjects with high-risk behaviours, or residents in a fishing community were more likely to drop out of the study. Recognised advantages of conducting longitudinal studies of caries may, therefore, be lost.
PubMed ID
21046910 View in PubMed
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18F-fluorodeoxyglucose positron emission tomography-computed tomography for suspected recurrent papillary thyroid cancer: early experience at Sunnybrook Health Sciences Centre.

https://arctichealth.org/en/permalink/ahliterature153281
Source
J Otolaryngol Head Neck Surg. 2008 Oct;37(5):712-7
Publication Type
Article
Date
Oct-2008
Author
Max Dahele
Yee C Ung
Lisa Ehrlich
Jay Silverberg
Judith Balogh
C Shun Wong
Author Affiliation
Departmentof Radiation Oncology, University of Toronto, Edmond Odette Cancer Centre,Toronto, Ontario.
Source
J Otolaryngol Head Neck Surg. 2008 Oct;37(5):712-7
Date
Oct-2008
Language
English
Publication Type
Article
Keywords
Adult
Aged
Biological Markers - blood
Cancer Care Facilities
Carcinoma, Papillary - pathology - radionuclide imaging - surgery
Cohort Studies
Female
Fluorodeoxyglucose F18 - diagnostic use
Follow-Up Studies
Humans
Male
Middle Aged
Neoplasm Recurrence, Local - pathology - radionuclide imaging - surgery
Neoplasm Staging
Ontario
Positron-Emission Tomography - methods
Reproducibility of Results
Retrospective Studies
Risk assessment
Sensitivity and specificity
Thyroglobulin - blood
Thyroid Neoplasms - pathology - radionuclide imaging - surgery
Thyroidectomy - methods
Time Factors
Treatment Outcome
Young Adult
Abstract
To report the initial experience with combined 18F-fluorodeoxyglucose positron emission tomography (FDG PET)/computed tomography (CT) imaging for suspected recurrent papillary differentiated thyroid cancer (DTC) at Sunnybrook Health Sciences Centre (SHSC), Toronto.
Single institution retrospective study.
Consecutive patients from SHSC who underwent FDG PET/CT imaging for suspected recurrent DTC over a period of 2.5 years were identified and their charts reviewed.
Qualitative appraisal of FDG PET/CT imaging in suspected recurrent DTC.
Sixteen patients (14F, 2M) were identified accounting for 17 FDG PET/CT scans. Three scans (18%) in 3 different patients were reported as suspicious for recurrent disease in the neck (1-3 lesions) and were considered "positive". All were subsequently confirmed pathologically (4-13 positive lymph nodes post operatively). Prior conventional imaging was abnormal in two patients. Two patients had an elevated non-stimulated thyroglobulin (TG)
PubMed ID
19128681 View in PubMed
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23-year dynamics (1994-2016) relationships to its health, behavioral characteristics and  prevention of cardiovascular diseases among women 25-44 years in Russia /Siberia.

https://arctichealth.org/en/permalink/ahliterature301119
Source
Ter Arkh. 2018 Feb 14; 90(1):36-44
Publication Type
Journal Article
Date
Feb-14-2018
Author
V V Gafarov
D O Panov
E A Gromova
I V Gagulin
A V Gafarova
E A Krymov
Author Affiliation
FSBI Institute of Internal and Preventive Medicine, Novosibirsk, Russia.
Source
Ter Arkh. 2018 Feb 14; 90(1):36-44
Date
Feb-14-2018
Language
English
Publication Type
Journal Article
Keywords
Adult
Aged
Attitude to Health
Cardiovascular diseases
Female
Health Behavior
Humans
Middle Aged
Reproducibility of Results
Risk factors
Russia
Siberia
Surveys and Questionnaires
Abstract
To determine the 23-year dynamics (1994-2016) of attitudes toward one's health, behavioral characteristics and the prevention of cardiovascular diseases in an open population among women 25-44 years old in Russia / Siberia (Novosibirsk).
In the framework of the third screening of the MONICA program for the study of trends and control of cardiovascular diseases and the MONICA-psychosocial (MOPSY) subprogram, in 1994 a random representative sample of women aged 25-64 years of age from one from the districts of Novosibirsk (n = 870, the average age is 45.4±0.4 years); in the age group 25-44 years - 284 persons. In 2016 years. in the framework of screening studies on the budgetary issue of NIITPM No. gos. reg. 01201282292, a random representative sample of women aged 25-44 years old in the same district of Novosibirsk (n = 540) was examined. Attitude to their health, behavioral characteristics and the prevention of cardiovascular diseases were studied using the "Knowledge and attitude to their health" scale, validated for the Russian population under the WHO "MONICA" program. The chi-square test (x2) was used to calculate the indices. The criterion of statistical significance was the reliability of the result at p
PubMed ID
30701756 View in PubMed
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A 24-month clinical study of the incidence and progression of dental caries in relation to consumption of chewing gum containing xylitol in school preventive programs.

https://arctichealth.org/en/permalink/ahliterature228109
Source
J Dent Res. 1990 Nov;69(11):1771-5
Publication Type
Article
Date
Nov-1990
Author
D. Kandelman
G. Gagnon
Author Affiliation
Department of Oral Health, Faculty of Dentistry, University of Montreal, Québec, Canada.
Source
J Dent Res. 1990 Nov;69(11):1771-5
Date
Nov-1990
Language
English
Publication Type
Article
Keywords
Analysis of Variance
Chewing Gum
Child
DMF Index
Dental Caries - epidemiology - pathology - prevention & control
Dental Plaque Index
Female
Follow-Up Studies
Humans
Incidence
Male
Quebec - epidemiology
Reproducibility of Results
School Dentistry
Socioeconomic Factors
Xylitol
Abstract
The effect of chewing gum containing xylitol on the incidence and progression of dental caries was tested in a sample of 274 children, aged eight and nine years, of low socio-economic status and high caries rate. They were divided into two experimental groups (15% and 65% xylitol chewing gum distributed three times a day at school) and one control group (without chewing gum). The three groups were exposed to the same basic preventive program. Children who chewed gum had a significantly lower net progression of decay (progressions-reversals) over a 24-month period than did the controls. Results for the two groups chewing gum were similar. Chewing xylitol gum had a beneficial effect on the caries process for all types of tooth surfaces, and especially for bucco-lingual surfaces. The two experimental groups had a DMF(S) increment of 2.24 surfaces, compared with 6.06 surfaces for the control group. For this indicator, there was no difference between the two experimental groups. Results for the plaque index were in agreement with those of the DMF(S) increment and the net progression of decay.
PubMed ID
2229617 View in PubMed
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The 39 item Parkinson's disease questionnaire (PDQ-39) revisited: implications for evidence based medicine.

https://arctichealth.org/en/permalink/ahliterature164059
Source
J Neurol Neurosurg Psychiatry. 2007 Nov;78(11):1191-8
Publication Type
Article
Date
Nov-2007
Author
Peter Hagell
Carita Nygren
Author Affiliation
Department of Health Sciences, Lund University, PO Box 157, SE-221 00 Lund, Sweden. Peter.Hagell@med.lu.se
Source
J Neurol Neurosurg Psychiatry. 2007 Nov;78(11):1191-8
Date
Nov-2007
Language
English
Publication Type
Article
Keywords
Activities of Daily Living - psychology
Adult
Aged
Aged, 80 and over
Antiparkinson Agents - therapeutic use
Cognition Disorders - diagnosis - drug therapy - psychology
Disability Evaluation
Evidence-Based Medicine
Female
Geriatric Assessment - statistics & numerical data
Humans
Levodopa - therapeutic use
Male
Middle Aged
Mobility Limitation
Parkinson Disease - diagnosis - drug therapy - psychology
Psychometrics - statistics & numerical data
Quality of Life - psychology
Questionnaires
Reproducibility of Results
Sick Role
Sweden
Abstract
The 39 item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient reported rating scale in Parkinson's disease. However, several fundamental measurement assumptions necessary for confident use and interpretation of the eight PDQ-39 scales have not been fully addressed.
Postal survey PDQ-39 data from 202 people with Parkinson's disease (54% men; mean age 70 years) were analysed regarding psychometric properties using traditional and Rasch measurement methods.
Data quality was good (mean missing item responses, 2%) and there was general support for the legitimacy of summing items within scales without weighting or standardisation. Score reliabilities were adequate (Cronbach's alpha 0.72-0.95; test-retest 0.76-0.93). The validity of the current grouping of items into scales was not supported by scaling success rates (mean 56.2%), or factor and Rasch analyses. All scales represented more health problems than that experienced by the sample (mean floor effect 15%) and showed compromised score precision towards the less severe end.
Our results provide general support for the acceptability and reliability of the PDQ-39. However, they also demonstrate limitations that have implications for the use of the PDQ-39 in clinical research. The grouping of items into scales appears overly complex and the meaning of scale scores is unclear, which hampers their interpretation. Suboptimal targeting limits measurement precision and, therefore, probably also responsiveness. These observations have implications for the role of the PDQ-39 in clinical trials and evidence based medicine. PDQ-39 derived endpoints should be interpreted and selected cautiously, particularly regarding small but clinically important effects among people with less severe problems.
Notes
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PubMed ID
17442762 View in PubMed
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5398 records – page 1 of 540.