Evidence-Based Practice for Nurses

pilot study helps confirm the study’s feasibility and allows for revisions to be
made. Researchers do not want to get midway into projects only to find that
the instruments are flawed, the projected sample size is unachievable, a need
for additional research assistants arises, or the study cannot be completed
within the budget. All of these issues can cause serious problems and ultimately
jeopardize the study.

1. Factors to consider when planning data collection include which of the following? (Select
   all that apply.)
   a. Time frame
   b. Budget
   c. Training of personnel
   d. Availability of preprinted questionnaires


2. A pilot:
   a. is a small version of the study.
   b. confirms feasibility of the study.
   c. critiques the conclusions from a study.
   d. is the small stipend that subjects receive for participating in a study.

TEST YOUR KNOWLEDGE 10-1

How did you do? 1. a, b, c, d; 2. a, b

10.2 Collecting Quantitative Data

At the end of this section, you will be able to:

‹ Describe various methods to measure and collect quantitative data

‹ Discuss advantages and disadvantages to data collection methods

‹ Identify levels of measurement

‹ Examine strategies used to address issues associated with quantitative data collection

methods

Collecting Numbers

Quantitative methods are used to test stated hypotheses and call for research-
ers to use formal, objective, and systematic procedures and instruments that
produce numerical data (Havens, 2001). Data from quantitative studies are
the highest level of evidence on which clinicians can base EBP decisions. For
example, studies involving meta-analyses of multiple randomized controlled

10.2 Collecting Quantitative Data 255