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: 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.
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.
Ús de observational study en anglès
1
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.
6
We included 31 patients having POEM in this single-center prospective observationalstudy.
7
Methods and analyses: A cross-sectional, descriptive and observationalstudy will be conducted.
8
We performed an observationalstudy among patients of a tertiary headache clinic.
9
One 2015 observationalstudy analysed the behaviour of medical students in Australia.
10
Methods: This was a retrospective observationalstudy at a tertiary care center.
11
This was a two-case observationalstudy involving NH residents with advanced dementia.
12
Methods: A multicentre prospective observationalstudy enrolled patients undergoing assessment for possible ACS.
13
Method: Prospective observationalstudy of 121 medical students taking the final licensing exam.
14
Design: Multi-site, prospective, observationalstudy of 338 adults entering substance use disorder treatment.
15
Materials and methods: This observationalstudy included 418 patients with IS or TIA.
16
Methods: This was a prospective observationalstudy with two time points.