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Then we randomly select n 1 cases and n 0 controls from this population to form a main study sample.
If this data is treated as a field trial, then this information can be used to more adequately target the items to the cohort for a main study.
In a project such as PISA, the items would have been extensively field trialled prior to the instantiation of a main study.
Blink reflex study is routinely used to diagnose TN, which is a main study for detecting large-myelinated (Aβ) nerve fiber function [29], however, it did not show an adequate sensitivity in detecting trigeminal nerve dysfunction in classical TN.
If Phase 2 of AHELO is seen as a field trial, then the data produced provides statistical and psychometric information sufficient to ensure the validity and reliability of a main study.
Second, we examine how the maximum sample size researchers are willing to collect in a main study (e.g. due to time or financial constraints) leads to overestimated effect size estimates in the studies that are performed.
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Using the scenario method, in a pilot and a main studies (n = 156) migrants' targets were portrayed as adopting the host culture or conserving the original one, depending on the private (at home) or public (at work) setting.
Another reason for conducting a pilot study is to provide information to enable a sample size calculation in a subsequent main study.
The study was divided into two parts: a qualitative part to collect relevant attributes and a quantitative main study to elicit the patients' preferences.
In a second main study, recording dust particles, air-borne and sedimenting aerobic cfu, the screen was associated with optimal operating room clothing.
Outline the study to potential stakeholders and gain their support for a potential main study.
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Justyna Jupowicz-Kozak
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