Draws inferences from a sample to a population where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints.
Methods: Prospective population-based observationalstudy evaluating daily clinical practice in Northern Holland.
2
We illustrate our new methodology using data from a longitudinal observationalstudy.
3
Design: A prospective observationalstudy in a homogeneous population with nonspecific complaints.
4
Design and setting: Prospective observationalstudy in university hospital intensive care units.
5
Methods: Peruvians initiating first-line ART were enrolled in a prospective observationalstudy.
1
Methods: A national CSD surveillancestudy is conducted in Israel since 1991.
2
A long term surveillancestudy could hold the clues to developing a Covid-19 vaccine.
3
A large surveillancestudy on antimicrobial prescribing appropriateness in different hospital settings is warranted.
4
Design: We conducted a 15-year prospective surveillancestudy of all invasive pneumococcal infections in children.
5
The authors evaluated the effectiveness and safety of bimatoprost using an open-label, non-comparative, three-month, community-based surveillancestudy.
Uso de observational studies em inglês
1
Melioidosis risk was estimated using Bayesian evidence synthesis of 12 observationalstudies.
2
Studies included randomized clinical trials, observationalstudies, guideline statements, and review articles.
3
Design: Systematic review and meta-analysis of randomised controlled trials and observationalstudies.
4
Most observationalstudies of CRP and cardiovascular disease have been in Europeans.
5
The adipocyte-secreted protein adiponectin is associated with insulin sensitivity in observationalstudies.
6
Weighting methods offer an approach to estimating causal treatment effects in observationalstudies.
7
Context: Vitamin K has been implicated in bone health, primarily in observationalstudies.
8
We also selected observationalstudies or case reports examining bisphosphonates related to ONJ.
9
Results: Six cross-sectional or observationalstudies met the criteria for review.
10
Cannon is quick to point out that observationalstudies have value.
11
Where clinical trial evidence was lacking, we relied on information from observationalstudies.
12
This completion rate was higher than reported in similar observationalstudies.
13
We excluded original trial reports, observationalstudies, and clinical systematic reviews.
14
Results providing evidence of associations may be overrepresented in meta-analyses of observationalstudies.
15
The Cox model is a valuable tool, particularly for observationalstudies.
16
We sought to include both experimental and observationalstudies within the United States.