advantages nested case control study design
Associated factors for treatment delay in pulmonary tuberculosis in HIV-infected individuals: a nested case-control study docx
Ngày tải lên :
06/03/2014, 04:20
... of HIV,
and to identify the factors associated with this delay.
Methods
Study design and population
A nested case- control study was undertaken within a
cohort of HIV-infected individuals , aged ... factors for treatment delay
in pulmonary tuberculosis in HIV-infected individuals: a nested case-
control study. BMC Infectious Diseases 2012 12:208.
Coimbra et al. BMC Infectious Diseases 2012, ... factors for treatment delay in
pulmonary tuberculosis in HIV-infected
individuals: a nested case- control study
Isabella Coimbra
1*
, Magda Maruza
1
, Maria de Fátima Pessoa Militão-Albuquerque
2
,...
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The Diesel Exhaust in Miners Study: A Nested Case–Control Study of Lung Cancer and Diesel Exhaust pptx
Ngày tải lên :
22/03/2014, 17:20
... exposures.
Study design
A nested case control study of lung cancer and DE in a cohort of
12 315 workers in eight non-metal mining facilities included 198
lung cancer deaths and 562 control subjects. ... exposure for subjects in both this
and the cohort study (12).
A small percentage of subjects in the nested case control study
worked at more than one study facility (ie, 5.9% worked at two
facilities ... 2.23; 16 case
subjects and 42 control subjects), 1.76 (95% CI = 0.11 to 27.91; 10
case subjects and 23 control subjects), and 3.66 (95% CI = 0.26 to
52.09; 20 case subjects and 31 control subjects),...
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Báo cáo y học: "Comparative study of control selection in a national population -based case-control study: Estimating risk of smoking on cancer deaths in Chinese men"
Ngày tải lên :
26/10/2012, 09:48
... population-based case- control study to
assess the validation of the novel control selection
design by comparing the consistency between the
new design and a routine control selection design in a
large case- control ... To assess the validation of a novel control selection design by comparing the
consistency between the new design and a routine design in a large case- control study that
was incorporated into ... Sex-matched living spouse control design as an alternative control selection
for a case- control study is valid and feasible, and the basic principles of the equivalence study
are also supported...
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Breast cancer risk in relation to occupations with exposure to carcinogens and endocrine disruptors: a Canadian case–control study pptx
Ngày tải lên :
06/03/2014, 02:21
... Descriptive statistics for breast cancer cases and
controls
Controls Cases
n 1146 1006
Age @ interview, years, mean 56.2 60.0
Year @ interview (controls),
or diagnosis (cases), mean
2006.3 2005.8
Never ... agri-
cultural industries of the geographic study area.
Band et al. [21] conducted a case control study with
1018 cases in British Columbia. It was similar to this
study but with separate analyses for ... CI:1.0-6.3 ). This study also may
have had negative exposure confounding causing dimin-
ished effect estimates.
Labrèche et al. [23] analyzed a case control study in
Montreal (556 cases) using an...
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Occupation and Breast Cancer: A Canadian Case–Control Study docx
Ngày tải lên :
06/03/2014, 02:21
... occupational cancer
risks in British Columbia. A population-based case- control study of 995 incident
breast cancer cases by menopausal status, controlling for confounding factors. J.
Occup. Environ. Med. ... (29.5%)
within a mile of a farm
4
1
Missing cases = 12 (1%).
2
Missing cases = 6 (.5%).
3
Missing cases = 14 (1.2%).
4
Missing cases = 21 (1.8%).
age of controls = 58.64); education level; annual ... 769
TABLE 1. Descriptive profile of 564 female breast cancer cases and 599 female commu-
nity controls
Breast cancer cases Community controls
Ye s % N o % Yes % No %
Ever pregnant
1
495 (43%) 65...
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báo cáo hóa học:" A MIF haplotype is associated with the outcome of patients with severe sepsis: a case control study" pdf
Ngày tải lên :
18/06/2014, 15:20
... Access
Research
A MIF haplotype is associated with the outcome of patients with
severe sepsis: a case control study
Lutz E Lehmann
†1
, Malte Book*
†1
, Wolfgang Hartmann
2
, Stefan U Weber
3
,
Jens-Christian ... the study, recruited patients, performed gen-
otyping and drafted the manuscript. MB Performed statis-
tical calculations, wrote the manuscript, contribute to
patient inclusion and study design. ... to
study design, performed genotyping and drafted the man-
uscript. SUW contributed to patient inclusion, data analy-
sis and drafted the manuscript. JCS contributed to patient
inclusion and study...
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Báo cáo hóa học: "Prognostic impact of clinical course-specific mRNA expression profiles in the serum of perioperative patients with esophageal cancer in the ICU: a case control study" potx
Ngày tải lên :
18/06/2014, 16:20
... expression profiles in the serum of perioperative
patients with esophageal cancer in the ICU: a case control study.
Journal of Translational Medicine 2010 8:103.
Submit your next manuscript to BioMed ... be found in the
study of these cytokines.
TGF-a mRNA in serum has previously been described
as a prognosticator in fulminant hepatitis [11] although
this was not the case in our study. Expression ... expression profiles in the serum of
perioperative patients with esophageal cancer in
the ICU: a case control study
Shunsaku Takahashi
1,2
, Norimasa Miura
2*
, Tomomi Harada
1,2
, ZhongZhi Wang
2
,...
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báo cáo hóa học: " Microglia activation in sepsis: a case-control study" ppt
Ngày tải lên :
19/06/2014, 22:20
... significant.
Results
Cases and controls
Demographic characteristics of cases and controls are
listed in Table 2. There were no differences in sex and in
time from death until autopsy between cases and controls.
There ... semi-quantitative score.
Flow chart of selection of cases and controlsFigure 1
Flow chart of selection of cases and controls. * Questionable cases: systemic diseases or diseases with a (possible) ... human tissue. In this study we describe for the
first time a marked increase of activated microglia in brain
tissue of patients who died with sepsis. This case- control
study was conducted in...
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Báo cáo hóa học: "Case-Control study of Firefighters with documented positive tuberculin skin test results using Quantiferon-TB testing in comparison with Firefighters with negative tuberculin skin test results" potx
Ngày tải lên :
20/06/2014, 00:20
... equally distributed among cases and controls.
For all positive TBST cases, 47 (31.8%) of 148 were posi-
tive for MA, while 78 (35.5%) of 220 positive MA
responses came from the control group. These ... comparison of
the study cases to the base population, showing a good
representation of the population of concern. Table 1
shows the comparison of the QFT results in both the Case
and Control groups.
Although ... monitored our working population. 12.9% of the 148 cases, and 3.2% of
the 220 controls had a positive QFT result. Another 14.8% of cases and 4.5% of controls had
conditionally positive QFT results....
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Báo cáo hóa học: " Solvent exposure and malignant lymphoma: a population-based case-control study in Germany" pptx
Ngày tải lên :
20/06/2014, 00:20
... Canadian case- con-
trol study, including 517 cases and 1,506 control subjects
[26]. In a more recent study among nearly 5,000 Finnish
laboratory workers seven NHL cases and three HL cases
were found, ... accordance
with a recently published review [38]. Concerning NHL
subentities, a case- control study nested within a large
cohort study among Australian petroleum workers [39]
points to a dose-response ... dis-
tribution among the control persons (50
th
and 90
th
per-
centile of the exposed controls). Only the results for
exposure categories with at least 5 probands (cases and
control subjects combined)...
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báo cáo hóa học: " The role of cumulative physical work load in symptomatic knee osteoarthritis – a case-control study in Germany" potx
Ngày tải lên :
20/06/2014, 00:20
... study design, performed the statistical
analysis and drafted the manuscript, UB participated in
the study design and and helped to draft the manuscript,
NA participated in the design of the study ... dose-response relationship. In
their case- control study, Sandmark et al. [18] compare
patients who had undergone a total knee replacement
with randomly selected population controls. The authors
find a ... and a non-differential approach to
cases and controls. Participants were not informed of the
specific aims of the study. They were asked to participate
in a study concerning the theme 'occupation...
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báo cáo hóa học:" Predictive value of ovarian stroma measurement for cardiovascular risk in polycyctic ovary syndrome: a case control study" pptx
Ngày tải lên :
20/06/2014, 07:20
... SD;
a
P < 0.001 (Student’s t test) PCOS vs control group.
Table 2 Metabolic and cardiovascular risk parameters in
control women and in women with PCOS
PCOS Control
N=24 N=12 P-value
Fasting blood
glucose ... mean ± SD;
a
P < 0.001 (Student’s t test) PCOS vs control group.
Table 3 Sex hormone levels in control women and in
patients with PCOS
PCOS Control
N=24 N=12 P-value
FSH (U/l) 4,77 ± 1,24 4,47 ... are mean ± SD;
a
P < 0.001 (Student’s t test) PCOS vs control group.
Table 4 Ovarian ultrasound measurements in PCOS and
control women
Control PCOS
N = 12 N = 24 P-value
Ovarian Volume (cm
3
)...
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báo cáo hóa học:" Double disadvantage: a case control study on health-related quality of life in children with sickle cell disease" potx
Ngày tải lên :
20/06/2014, 15:20
... KF designed and supervised execution of the study, interpreted
the data and drafted and revised the manuscript. JO, HH and MP supervised
execution of the study and revised the manuscript. MAG designed ... 10:2285-2294.
doi:10.1186/1477-7525-8-121
Cite this article as: Hijmans et al.: Double disadvantage: a case control
study on health-related quality of life in children with sickle cell
disease. Health and ... 8:121
http://www.hqlo.com/content/8/1/121
Page 6 of 8
RESEARC H Open Access
Double disadvantage: a case control study on
health-related quality of life in children with
sickle cell disease
Channa T Hijmans
1,2*
,...
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Báo cáo y học: "Binge eating symptomatology in overweight and obese patients with schizophrenia: a case control study" ppt
Ngày tải lên :
08/08/2014, 21:20
... in the study.
Controls consisted of clinic workers, informed through
local advertising.
Participants gave informed consent and local Ethical
Committee approval was obtained for the study.
Design ... WG.
Limitations of this study included the small number of
controls in regard to the prevalence of BED in non over-
weight patients; unknown AP drugs adherence; absence of
prospective design as well as ... level of binge eating
symptoms observed in this study.
Due to absence of non schizophrenic psychiatric controls
and the correlation nature of this study, we cannot caus-
ally link intake of antipsychotic...
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Báo cáo y học: "Selective serotonin reuptake inhibitor use associates with apathy among depressed elderly: a case-control study" potx
Ngày tải lên :
08/08/2014, 21:20
... studied. We conducted a case control study to
evaluate the risk of apathy among elderly depressed day-
hospitalized patients treated with, or without, SSRI's. The
study utilized an existing ... interest.
Authors' contributions
NW conceived, designed the study, performed the statisti-
cal analysis and drafted the manuscript. RvR designed the
study, helped with statistical analysis, and ... database. Six hundred
(600) cases received antidepressants. Three hundred and
eighty four cases had complete GDS for both admission
and discharge and were included in this study.
With respect to Axis...
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