Quantitative Correlational Study’s Research

Quantitative Correlational Study’s Research

Answer the following questions and reply to at least two colleagues:

  • For the instructor assigned article this week, what research approach (basic vs. applied) is used in the study?
  • What is the specific type of the research method, qualitative or quantitative? Why do you think the author(s) choose this method? What is the specific research design for
    this study? Give a rationale for why you think the author(s) chose this design.
  • What other type of research design could be used for a study about this topic? Why would you choose to study the topic this way? Quantitative Correlational Study’s Research


Post your initial response by 2359 Wednesday of Module 2  Posts must be substantive and reflect thought and effort in the discussion. Always remember to cite and reference your resources appropriately using APA format.  You should be using in-text citations in your initial response.  Use in-text citations as needed in your replies.

BACKGROUND: Although evidence suggests that fatigue and sleepiness affect the provision of care in inpatient units, there is a lack of research on the sleep patterns of emergency nurses and the effects of dis- turbed sleep and fatigue on their cognitive abilities and susceptibility to medical errors. METHODS: A quantitative correlational design was used in this study; in each of 7 different statistical models, zero-order relationships between predictors and the dependent variable were examined with appropriate inferential tests. RESULTS: Participants reported high levels of sleepiness and chronic fatigue that impeded full functioning both at work and at home. CONCLUSIONS: Although high levels of self-reported fatigue did not show any effects on cognitive function, other factors in the environment may contribute to delayed, missed, or inappropriate care. Further research is indicated.

Studies of worker fatigue in the military and com- mercial trucking industries1,2 suggest that long hours, especially extending into overnight, can be hazardous in terms of the potential for errors due to sleepiness and reduced vigilance. Medical providers, both nurses and physicians, are at risk because of the need for around-the-clock coverage and the number and type of decisions they must make in a given time span; in 1989, the Bell Commission Report cited sleep depri- vation in medical house officers as a major contrib- utor to the 1984 death of Libby Zion, an 18-year-old who died at New York Hospital, leading to a restruc- turing of the hours involved in medical residencies.3 Quantitative Correlational Study’s Research

The long (up to 36 hour) shifts of the medical resi- dents in charge of her care and the consequences of their fatigue on the decisions that were made were cited as factors in her death. As a result of their inves- tigation of the case, the Bell commission recommen- ded limiting the work hours of medical residents to less than 80 hours a week and no more than 24 hours in a row, and subsequent research has led to similar recommendations for the nursing workforce.4,5

Emergency care settings are chaotic environ- ments, where there is high patient turnover, constantly changing priorities and frequent changes in patient condition. High demand work settings are associated with increased fatigue, which can impair nurses_ at- tentiveness and ability not only to recognize potential errors they might commit but also to recognize and mitigate the errors of others, including physicians.6,7

The work schedules of emergency nurses (ENs) are characterized by increasing demands, irregular shifts, and long hoursVall of which challenge their mental and physical stamina. Although 12-hour shifts are

JONA � Vol. 47, No. 1 � January 2017 41

Author Affiliations: Director, Institute for Emergency Nursing Research (Dr Wolf); Senior Research Associate (Mss Perhats and Delao), Emergency Nurses Association, Des Plaines; and Research Assistant Professor (Dr Martinovich), Department of Psychiatry, Northwestern University Feinberg School of Medicine, Evanston, Illinois.

The authors declare no conflicts of interest. Correspondence: Dr Wolf, Institute for Emergency Nursing

Research, Emergency Nurses Association, 915 Lee St, Des Plaines, IL 60016 (lisa.wolf@ena.org)Quantitative Correlational Study’s Research.

Supplemental digital content is available for this article. Direct URL citations appear in the printed text and are provided in the HTML and PDF versions of this article on the journal_s Web site (www.jonajournal.com).

DOI: 10.1097/NNA.0000000000000435

Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved.

common, nurses frequently work additional hours; work days may last 16 hours or more, often spread- ing across evenings and nights with short intervals between shifts. More than a decade ago, Rogers et al8

presented compelling evidence of increasing incident/ error rates during extended periods of work: Rates rise after 9 hours, double after 12 consecutive hours, and triple by 16 hours. Further studies have demon- strated that insufficient sleep and inadequate recov- ery time from long hours and shift work affect a nurse_s ability to provide safe, effective patient care and increase risks to personal safety.9-11 The Joint Commission_s 2011 Sentinel Event Alert on health- care worker fatigue and patient safety states that BShift length and work schedules have a significant effect on healthcare providers” quantity and quality of sleep and, consequently, on their job performance, as well as on the safety of their patients and their individual safetyIStill, while the dangers of extended work hours (912 hours) are well known, the healthcare industry has been slow to adopt changes, particularly with regard to nursingI[12(p1) Multiple studies support that a significant number of inpatient nurses have im- paired sleep quality, excessive sleepiness, and abnormal fatigue, which are associated with a greater risk of making medical errors and potentially causing harm to patients.13-15 The research of Rogers and colleagues8

demonstrated that the 12-hour shift is past the point where safe decision making may be expected, and both the Agency for Health Research and Quality4

and the Institute of Medicine5 have since recommended limiting the length of nurses_ shifts. Although evidence suggests that both mental and physical fatigue and sleepiness affect the provision of care in inpatient units,16 there is a lack of research on the sleep patterns of ENs and the effects of disturbed sleep and fatigue on their cognitive abilities and susceptibility to making medical errors. The purpose of this study is to explore the relationship between reported sleep quality, per- ceived fatigue and sleepiness, and cognitive perfor- mance in a sample of ENs.


Before recruitment of subjects, institutional review board approval was obtained and the study was approved (Chesapeake Research Review, Columbia, Maryland). A Certificate of Confidentiality from the National Institutes of Health was obtained to further protect the respondents_ anonymity given the sensi- tive nature of the question. A quantitative correla- tional design was used to explore the relationship between nurses_ reported sleep patterns, perceived sleepiness and fatigue, and their ability to carry out timed cognitive tasks. As part of a 35-item online

questionnaire, participants performed 3 medication dosage calculations and correlations between fatigue and cognitive performance were measured in the same survey. Predictors were selected based on empirically based associations with work fatigue and its impact on task performance.17 In each of 7 different statistical models, zero-order relationships (ie, simple relationships that do not hold constant other predictors) between each of the predictors and the dependent variable were examined with appro- priate inferential tests. Quantitative Correlational Study’s Research


Of the 2,419 ENs who were recruited via e-mail and social media, 2010 met eligibility criteria and consented to participate. Eligibility criteria required that study participants were English speaking, currently licensed ENs working at least 1 shift per week in a US emergency department (ED). Among those who consented, 504 survey respondents were excluded because they did not meet study criteria (eg, worked 1 shift or less in the past 30 days, did not complete survey in 1 sitting), resulting in a total sample of 1506 ENs.

Research Questions

On the basis of the existing body of evidence, we hy- pothesized that ENs_ patterns and quality of sleep, sleepiness, and fatigue would have an attenuating effect on their performance in timed cognitive skill tests. To investigate these effects, we posed the fol- lowing research questions:

Q1: Is there a relationship between ENs_ day- time sleepiness and performance in timed cognitive tests?

Q2: Is there a relationship between ENs_ patterns/quality of sleep and performance in timed cognitive tests?

Q3: Is there a relationship between ENs_ fatigue and performance in timed cognitive tests?

Data Collection

Using a Web platform (Qualtrics, Provo, Utah), study participants were asked to complete an online survey that included questions about participant and hospital demographics (Tables 1 and 2), nurses_ work sched- ules, reported sleep patterns and levels of fatigue, cog- nitive performance measures, and routine activities of daily living. Data on sleep patterns, sleep quality, and fatigue were collected using the following 3 validated and reliable instruments that were incorporated into the online survey Quantitative Correlational Study’s Research.

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