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4161 records – page 1 of 417.

Source
Lancet. 1992 Sep 26;340(8822):793
Publication Type
Article
Date
Sep-26-1992
Author
R. Korpela
T. Vesa
Source
Lancet. 1992 Sep 26;340(8822):793
Date
Sep-26-1992
Language
English
Publication Type
Article
Keywords
Dairy Products
Dietary Fats - administration & dosage
Finland
Humans
Multivariate Analysis
Scandinavia
Notes
Comment On: Lancet. 1992 Jun 20;339(8808):1523-61351198
PubMed ID
1356202 View in PubMed
Less detail

Cellular telephones and risk of brain tumours.

https://arctichealth.org/en/permalink/ahliterature19897
Source
Lancet. 2001 Mar 24;357(9260):960-1
Publication Type
Article
Date
Mar-24-2001
Author
L. Hardell
K H Mild
Source
Lancet. 2001 Mar 24;357(9260):960-1
Date
Mar-24-2001
Language
English
Publication Type
Article
Keywords
Brain Neoplasms - epidemiology - etiology
Humans
Multivariate Analysis
Odds Ratio
Sweden - epidemiology
Telephone
Notes
Comment On: Lancet. 2000 Nov 25;356(9244):1837-4011117928
PubMed ID
11289377 View in PubMed
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Tumour burden as the main indicator of prognosis in Hodgkin's disease.

https://arctichealth.org/en/permalink/ahliterature24608
Source
Eur J Cancer. 1992;28A(12):1982-5
Publication Type
Article
Date
1992
Author
L. Specht
Author Affiliation
Department of Oncology, Herlev Hospital/University of Copenhagen, Denmark.
Source
Eur J Cancer. 1992;28A(12):1982-5
Date
1992
Language
English
Publication Type
Article
Keywords
Hodgkin Disease - pathology
Humans
Lymph Nodes - pathology
Multivariate Analysis
Neoplasm Staging
Prognosis
Abstract
A method of estimating the total tumour burden in patients with Hodgkin's disease was devised, combining the number of involved regions with the tumour size in each region. Further, a method of estimating the total tumour cell burden was devised, combining the estimate of the total macroscopic tumour burden with an estimate of the concentration of tumour cells in the tumour tissue. The prognostic significance of the total tumour burden was examined in multivariate studies of 300 patients in pathological stages I and II treated in the Danish National Hodgkin Study and 506 patients in all stages treated at the Finsen Institute, Copenhagen, Denmark, during a 15-year period. The total tumour burden turned out to be the most important prognostic factor in Hodgkin's disease. Most of the hitherto known prognostic factors were shown to be correlated with the total tumour burden and to lack independent prognostic significance.
PubMed ID
1419295 View in PubMed
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On the trail of necrotizing fasciitis in children.

https://arctichealth.org/en/permalink/ahliterature194848
Source
CMAJ. 2001 Jan 23;164(2):175-6; author reply 175-6
Publication Type
Article
Date
Jan-23-2001
Author
G M Liss
Source
CMAJ. 2001 Jan 23;164(2):175-6; author reply 175-6
Date
Jan-23-2001
Language
English
Publication Type
Article
Keywords
Child
Data Interpretation, Statistical
Fasciitis, Necrotizing - epidemiology
Humans
Multivariate Analysis
Ontario - epidemiology
Notes
Cites: CMAJ. 2000 Aug 22;163(4):393-610976253
Comment On: CMAJ. 2000 Aug 22;163(4):393-610976253
PubMed ID
11332304 View in PubMed
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Commingling and segregation analysis of blood pressure in a French-Canadian population.

https://arctichealth.org/en/permalink/ahliterature103498
Source
Am J Hum Genet. 1990 Jan;46(1):37-44
Publication Type
Article
Date
Jan-1990
Author
T. Rice
C. Bouchard
I B Borecki
D C Rao
Author Affiliation
Division of Biostatistics, Washington University School of Medicine, St. Louis, MO 63110.
Source
Am J Hum Genet. 1990 Jan;46(1):37-44
Date
Jan-1990
Language
English
Publication Type
Article
Keywords
Blood Pressure - genetics
Genetics, Medical
Humans
Multivariate Analysis
Normal Distribution
Quebec
Software
Abstract
Commingling and segregation of age-sex-adjusted systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial blood pressure (MBP) were examined in 1,560 individuals from 374 French-Canadian nuclear families. After correction for skewness, evidence in favor of two commingled distributions was found for SBP in the combined data (parents and offspring) and in parents, but not in offspring. Segregation analysis (using the computer program POINTER) suggested that a multifactorial contribution to all three phenotypes was greater in offspring than in parents, which could be the result of either polygenic or shared environmental components relevant to sibships, or both. Statistical evidence was found for a major effect on SBP. However, Mendelian transmission of the major effect was rejected, and no transmission of the major effect (equal tau's) was not. This is just the opposite to what would be expected if the major effect was due to a major gene, and it would ordinarily be considered as sufficient evidence to refute a major gene effect on SBP. However, the commingling in parents but not in offspring (who are all below 26 years of age), and the finding of equal transmission probabilities (nearly equal to 1), are compatible with an alternative interpretation. It is possible that there is a real major gene effect on SBP but that the genotype for elevated SBP has not yet expressed itself in the offspring as they have not yet gone through the risk period. Accordingly, this possibility needs to be evaluated further in additional studies involving older offspring.
Notes
Cites: Circulation. 1967 Dec;36(6):980-86061343
Cites: Hum Hered. 1971;21(6):523-425149961
Cites: Am J Hum Genet. 1974 Jul;26(4):489-5034842773
Cites: Am J Hum Genet. 1978 Jan;30(1):46-58623102
Cites: Am J Epidemiol. 1980 Feb;111(2):142-556965561
Cites: Am J Hum Genet. 1980 Jul;32(4):620-57395873
Cites: Hypertension. 1980 Jul-Aug;2(4 Pt 2):117-237399643
Cites: Hum Hered. 1981;31(5):312-217333620
Cites: Am J Clin Nutr. 1983 Mar;37(3):461-76829488
Cites: Am J Hum Genet. 1983 Sep;35(5):816-266614001
Cites: Am J Epidemiol. 1984 Jul;120(1):131-446741914
Cites: N Engl J Med. 1986 Jan 23;314(4):222-93001524
Cites: Genet Epidemiol. 1985;2(4):363-743841327
Cites: Am J Med Genet. 1987 Mar;26(3):511-93565465
Cites: J Clin Epidemiol. 1988;41(9):889-973183696
Cites: Am J Hum Genet. 1989 Aug;45(2):240-512757030
PubMed ID
2294754 View in PubMed
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Is grand multiparity an independent predictor of pregnancy risk? A retrospective observational study.

https://arctichealth.org/en/permalink/ahliterature183721
Source
Med J Aust. 2003 Sep 15;179(6):294-6
Publication Type
Article
Date
Sep-15-2003
Author
Michael D Humphrey
Author Affiliation
Cairns Clinical School, School of Medicine, James Cook University, QLD. Michael.Humphrey@health.wa.gov.au
Source
Med J Aust. 2003 Sep 15;179(6):294-6
Date
Sep-15-2003
Language
English
Publication Type
Article
Keywords
Adult
Female
Humans
Multivariate Analysis
Parity
Pregnancy
Pregnancy Complications
Retrospective Studies
Risk factors
Abstract
To determine whether high maternal parity has any effect on pregnancy outcome independent of other maternal characteristics.
Retrospective observational study using the database of a referral obstetric unit in a 280-bed regional hospital in far north Queensland.
All 15 908 women who had singleton births between 1992 and 2001, comprising 653 women with grand multiparity (>or= 5 previous births at gestation >or= 20 weeks) and 15 255 women with lower parity.
Spontaneous vaginal birth, postpartum haemorrhage (estimated blood loss > 500 mL), placental retention requiring manual removal, blood transfusion associated with the birth, and perinatal death.
Women with grand multiparity were significantly older than those with lower parity, more likely to be Indigenous, not to have had antenatal care, to have smoked during pregnancy and to have had one or more previous caesarean sections. On univariate analysis, women with grand multiparity were more likely to have a postpartum haemorrhage (9.2% v 5.3%) and blood transfusion (2.8% v 1.5%). However, multivariate logistic regression analysis of women who began labour (ie, did not have an elective caesarean section) showed that grand multiparity was not significantly associated with postpartum haemorrhage or blood transfusion when other maternal characteristics were included in the model (regression coefficients [95% CI], 1.36 [0.99-1.87] and 1.09 [0.59-2.02], respectively). However, they remained more likely to have a spontaneous vaginal birth (regression coefficient [95% CI], 2.10 [1.56-2.74]).
Women with grand multiparity do not have an increased likelihood of poor pregnancy outcomes. Birth-suite protocols which dictate extra interventions as routine during labour in these women should be revised.
Notes
Comment In: Med J Aust. 2004 Feb 16;180(4):196-7; author reply 19714960145
PubMed ID
12964911 View in PubMed
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A comparison of cognitive ability in normotensive and hypertensive 68-year-old men: results from population study "men born in 1914," in Malmö, Sweden.

https://arctichealth.org/en/permalink/ahliterature192705
Source
Exp Aging Res. 2001 Oct-Dec;27(4):319-40
Publication Type
Article
Author
L. André-Petersson
B. Hagberg
L. Janzon
G. Steen
Author Affiliation
Department of Psychology, Lund University, Sweden. Lena.Andre-Petersson@psychology.lu.se
Source
Exp Aging Res. 2001 Oct-Dec;27(4):319-40
Language
English
Publication Type
Article
Keywords
Aged
Cognition
Geriatric Psychiatry
Humans
Hypertension - psychology
Male
Multivariate Analysis
Population Surveillance
Sweden
Abstract
Hypertension and its consequences on cognition was analyzed using data from the study "Men born in 1914" in Malmö, Sweden, a prospective cohort study of cardiovascular disease. The baseline examinations took place in 1982/83 where 500 men participated in extensive medical and social examinations. A neuropsychological investigation was completed including five standardized cognitive tests. The specific purpose of the study was to investigate whether hypertension was associated with cognitive performance. By the use of multiple regression analyses, normal blood pressure and three stages of hypertension were analyzed in relation to test performance. Hypertension Stage 3 was associated with lower performance on tests measuring psychomotor speed and visuospatial memory, whereas hypertension Stage 1 was associated with higher performance on tests measuring verbal ability and constructional ability. The associations were unconfounded by clinical manifestations of atherosclerosis, history of stroke, depressive mood, and antihypertensive drug treatment.
PubMed ID
11681196 View in PubMed
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Genetic determination of mortality rate in Danish dairy cows: A multivariate competing risk analysis based on the number of survived lactations.

https://arctichealth.org/en/permalink/ahliterature268601
Source
J Dairy Sci. 2014 Mar;97(3):1753-61
Publication Type
Article
Date
Mar-2014
Author
R P Maia
B. Ask
P. Madsen
J. Pedersen
R. Labouriau
Source
J Dairy Sci. 2014 Mar;97(3):1753-61
Date
Mar-2014
Language
English
Publication Type
Article
Keywords
Animals
Cattle
Dairying - methods
Denmark
Female
Mortality
Multivariate Analysis
Parity
Pedigree
Pregnancy
Risk factors
Abstract
Dairy cow mortality has been steadily increasing during the last 2 decades in Denmark. This study aims to verify whether genetic mechanisms might be contributing to this increase. To do so, the records of 880,480 Holstein, 142,306 Jersey, and 85,206 Red Danish dairy cows calving from 1990 to 2006 were retrieved from the Danish Cattle register. Two causes of culling of cows were considered: death and slaughtering. Bivariate competing risk genetic models with a sire model structure were used to describe the death and the slaughtering rates simultaneously. The models included 2 random components: a sire random component with pedigree representing the sire genetic effects and a herd-year-season component. Moreover, the level of heterozygosity and the sire breed proportions were included in the models as covariates to account for potential nonadditive genetic effects due to the massive introduction of genetic material from other populations. The correlations between the sire components for death rate and slaughter rate were negative and small for the 3 populations, suggesting the existence of specific genetic mechanisms for each culling reason and common concurrent genetic mechanisms. In the Holstein population, the effects of the changes in the level of heterozygosity, breed composition, and the increasing genetic trend acted in the same direction, increasing the death rate in recent years. In the Jersey population, the effects of the level of heterozygosity and the breed proportion were small, and only the increasing genetic trend can be pointed as a genetic cause to the observed increase in the mortality rate. In the Red Danish population, neither the time-development pattern of the genetic trend nor the changes in the level of heterozygosity and breed composition could be causing the observed increase in the mortality; thus, nongenetic factors must be causing this negative development.
PubMed ID
24472129 View in PubMed
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Postpartum weight loss and infant feeding.

https://arctichealth.org/en/permalink/ahliterature194972
Source
J Am Board Fam Pract. 2001 Mar-Apr;14(2):85-94
Publication Type
Article
Author
L N Haiek
M S Kramer
A. Ciampi
R. Tirado
Author Affiliation
Department of Epidemiology, McGill University Faculty of Medicine, Montreal, Quebec, Canada.
Source
J Am Board Fam Pract. 2001 Mar-Apr;14(2):85-94
Language
English
Publication Type
Article
Keywords
Adult
Breast Feeding
Female
Humans
Multivariate Analysis
Postpartum Period - physiology
Quebec
Questionnaires
Weight Loss
Abstract
Women are often advised that lactation accelerates loss of the excess weight gained during pregnancy, but the evidence underlying this advice is sparse and conflicting. To help fill this gap, we assessed differences in the rate of postpartum weight loss in the first 9 months postpartum according to method of infant feeding.
Two hundred thirty-six women attending two public health clinics in Montreal were weighed in one to four routine infant immunization visits up to the 9th postpartum month. After each weighing, we administered a telephone questionnaire assessing the method of infant feeding (predominantly breast-feeding, mixed-feeding, or predominantly bottle-feeding) and potential confounders. Data were analyzed using unbalanced multivariate repeated measures linear regression.
Infant feeding was not associated with statistically significant differences in the rate of weight loss. Gestational weight gain, postpartum smoking, and maternal birthplace were important predictors of postpartum weight change.
Although our results cannot exclude an effect of more exclusive or more prolonged breast-feeding, breast-feeding as commonly practiced does not appear to influence the rate of postpartum weight loss. This information should be useful in counseling new or prospective mothers and in avoiding unrealistic expectations.
PubMed ID
11314929 View in PubMed
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A multilevel examination of school and student characteristics associated with moderate and high levels of physical activity among elementary school students (Ontario, Canada).

https://arctichealth.org/en/permalink/ahliterature136537
Source
Can J Public Health. 2010 Nov-Dec;101(6):495-9
Publication Type
Article
Author
Erin P Hobin
Scott T Leatherdale
Steve R Manske
Jennifer Robertson-Wilson
Author Affiliation
Department of Health Studies and Gerontology, University of Waterloo, Waterloo, ON. ephobin@uwaterloo.ca
Source
Can J Public Health. 2010 Nov-Dec;101(6):495-9
Language
English
Publication Type
Article
Keywords
Child
Female
Health Promotion - methods
Humans
Male
Motor Activity
Multivariate Analysis
Ontario
Schools
Students
Abstract
Schools represent an important environment for physical activity (PA) promotion among youth. Schools can promote PA through policies and programs but our understanding of how these school characteristics associate with student PA levels is largely unknown. Developing this understanding is critical for implementing new prevention interventions. The aim of this study was to identify the school- and student-related characteristics associated with moderate and high levels of PA in a sample of Ontario elementary schools.
Using multi-level logistic regression analyses, we explored the school- and student-level characteristics associated with being moderately and highly active using data collected from administrators and from students in grades 5 to 8 at 30 elementary schools in Ontario. Students' PA levels, sex, grade, and the number of physical education classes per week were linked to school environment data--specifically, a school's chosen implementation model for daily physical activity and whether it offers intramural and interschool PA programming.
Findings indicate that there was significant between-school variation for being moderately and highly active. Students were less likely to be moderately or highly active if they attended a school offering interschool PA programming. An important student characteristic positively associated with student PA levels included participating in at least two physical education classes per week.
The residual differences in PA by school suggest that school-level characteristics facilitate higher levels of student PA beyond individual-level factors. Although most variation in student PA lies between students within schools, there is sufficient between-school variation to be of interest to practitioners and policy-makers.
PubMed ID
21370788 View in PubMed
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4161 records – page 1 of 417.