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Using Multivariate Statistics

the total number of papers may exceed 10,000. Nevertheless, cost consideration forced us to consider mostly published papers and technical reports in English. 4 Formula 4 in Seifert (1991) is in error—a multiplier of n, of cell size, is missing in the numerator. 5 Unfortunately, the technique of meta-analysis cannot be applied, at present time, to such effects because the distribution of dis based on a sampling of people, whereas the statistics of techniques such as ARIMA are based on the distribution of a sampling of observations in the time domain regardless of the size of the people sample involved (i.e., there is no way to compare a sample of 100 points in time with a sample of 100 people). That is, a sample of 100 points in time has the same degrees of freedom if it were based on an observation of 1 person or of 1,000 people. 258 KLUGER AND DENISI From the papers we reviewed, only 131 (5%) met the criteria for inclusion. We were concerned that, given the small percentage of usable papers, our conclusions might not fairly represent the larger body of relevant literature. Therefore, we analyzed all the major reasons to reject a paper from the meta-analysis, even though the decision to exclude a paper came at the first identification of a missing inclusion criterion. This analysis showed the presence of review articles, interventions of natural feedback removal, and papers that merely discuss feedback, which in turn suggests that the included studies represent 1015% of the empirical FI literature. However, this analysis also showed that approximately 37% of the papers we considered manipulated feedback without a control group and that 16% reported confounded treatments, that is, roughly two thirds of the empirical FI literature cannot shed light on the question of FI effects on performance—a fact that requires attention from future FI researchers. Of the usable 131 papers (see references with asterisks), 607 effect sizes were extracted. These effects were based on 12,652 participants and 23,663 observations (reflecting multiple observations per participant). The average sample size per effect was 39 participants. The distribution of the effect sizes is presented in Figure 1. The weighted mean (weighted by sample size) of this distribution is 0.41, suggesting that, on average, FI has a moderate positive effect on performance. However, over 38% of the effects were negative (see Figure 1). The weighted variance of this distribution is 0.97, whereas the estimate of the sampling error variance is only 0.09. A potential problem in meta-analyses is a violation of the assumption of independence. Such a violation occurs either when multiple observations are taken from the same study (Rosenthal, 1984) or when several papers are authored by the same person (Wolf, 1986). In the present investigation, there were 91 effects derived from the laboratory experiments reported by Mikulincer (e.g., 1988a, 1988b). This raises the possibility that the average effect size is biased, because his studies manipulated extreme negative FIs and used similar tasks. In fact, the weighted average d in Mikulincer's studies was —0.39; whereas in the remainder of the

The effects of feedback interventions on performance: A historical review, a meta-analysis, and a preliminary feedback intervention theory.

Emotion and Adaptation

Background: The Internet is increasingly used as a medium for the delivery of interventions designed to promote health behavior change. However, reviews of these interventions to date have not systematically identified intervention characteristics and linked these to effectiveness. Objectives: The present review sought to capitalize on recently published coding frames for assessing use of theory and behavior change techniques to investigate which characteristics of Internet-based interventions best promote health behavior change. In addition, we wanted to develop a novel coding scheme for assessing mode of delivery in Internet-based interventions and also to link different modes to effect sizes. Methods: We conducted a computerized search of the databases indexed by ISI Web of Knowledge (including BIOSIS Previews and Medline) between 2000 and 2008. Studies were included if (1) the primary components of the intervention were delivered via the Internet, (2) participants were randomly assigned to conditions, and (3) a measure of behavior related to health was taken after the intervention. Results: We found 85 studies that satisfied the inclusion criteria, providing a total sample size of 43,236 participants. On average, interventions had a statistically small but significant effect on health-related behavior (d+ = 0.16, 95% CI 0.09-0.23). More extensive use of theory was associated with increases in effect size (P = .049), and, in particular, interventions based on the theory of planned behavior tended to have substantial effects on behavior (d+ = 0.36, 95% CI 0.15-0.56). Interventions that incorporated more behavior change techniques also tended to have larger effects compared to interventions that incorporated fewer techniques (P < .001). Finally, the effectiveness of Internet-based interventions was enhanced by the use of additional methods of communicating with participants, especially the use of short message service (SMS), or text, messages. Conclusions: The review provides a framework for the development of a science of Internet-based interventions, and our findings provide a rationale for investing in more intensive theory-based interventions that incorporate multiple behavior change techniques and modes of delivery. [J Med Internet Res 2010;12(1):e4]

Using the Internet to promote health behavior change: A systematic review and meta-analysis of the impact of theoretical basis, use of behavior change techniques, and mode of delivery on efficacy

国際生活機能分類(International Classification of Functioning, Disability and Health: ICF)にみた福祉・保健・医療の専門職協働における連携に関する貢献と課題

This descriptive correlational study describes the translation process and the psychometric testing of the Pittsburgh Sleep Quality Index (PSQI). The PSQI has been successfully translated into Arabic and back-translated into English by 10 Arabic bilingual translators. Then the PSQI is tested in a sample of 35 healthy Arabic bilinguals.The internal consistency reliability for the Global PSQI demonstrates borderline acceptability (Cronbach's alpha = .65). The reliability is further supported by moderate to high correlations between five PSQI components and the global PSQI score (r = .53 to .82, p < .01). Convergent validity is supported by the global PSQI correlating strongly with the Insomnia Severity Index (r = .76) and moderately with the related construct of the Medical Outcome Study Short Form-36 vitality subscale (r = -.33). Further testing of the PSQI is needed in a larger Arabic population, both clinical and healthy populations, living in their native countries.

Translating the Pittsburgh Sleep Quality Index Into Arabic

Background: Physiological benefits of exercise training for heart failure (HF) patients have been demonstrated, however little is known about the effects of training on the symptoms of fatigue and dyspnea.Aim: The purpose of this study was to examine HF symptoms of fatigue and dyspnea in response to a 24-week exercise training intervention.Methods: This pilot study was a randomized, two-group repeated measures design. Fifteen subjects in the intervention group completed a combination of aerobic and resistance training three times per week in a standard cardiac rehabilitation setting. The control group consisted of 6 subjects who were instructed not to begin any formal exercise program during the 24-week intervention.Results: Subjects (19 males and 2 females) had a mean age of 66.2 ± 10.2 years and mean ejection fraction (EF) of 28.4 ± 7.4%. Non-parametric Friedman Analysis of Variance by Ranks showed the exercise group significantly decreased sensory fatigue (Piper Fatigue Scale) over time (χ2 = 6.49, p =...

https://journals.sagepub.com/doi/pdf/10.1016/j.ejcnurse.2007.08.002

The Effects of Exercise Training on Fatigue and Dyspnea in Heart Failure

The purpose of this study was to determine how an exercise adherence intervention affects the physiological, functional, and quality of life outcomes of patients with heart failure (HF) Sixteen HF patients were randomly assigned to an exercise-only group (n = 8) or to an exercise-with-adherence group (n = 8) Two of the 16 people died from nonexercise related causes during the study and were not included in the analysis The intervention was tested over a 24-week period in which patients participated in a 12-week supervised exercise program (Phase 1) followed by 12 weeks of unsupervised home exercise (Phase 2) The intervention format was one of individualized graphic feedback on exercise goals and participation and problem-solving support by nurses Results indicate that patients who received the intervention exercised more frequently and experienced improved outcomes during both phases The adherence intervention may encourage HF patients to continue to exercise and thereby maintain the health benefits gained in both phases of an exercise program

Effects of an Exercise Adherence Intervention on Outcomes in Patients with Heart Failure

Heart Failure Exercise And Training Camp: effects of a multicomponent exercise training intervention in patients with heart failure.

Purpose: To review cognitive impairment and explore current measurement concerns faced by nurse practitioners caring for individuals with heart failure



Data sources: Review of peer-reviewed research articles published on the topic



Conclusions: Cognitive impairment is prevalent among individuals with heart failure Impairment frequently involves one or more domains, including attention, memory, and executive function No gold standard screening measure was identified from the reviewed literature



Implications for practice: It is imperative that clinicians are aware of cognitive impairment and its implications for their patients with heart failure Cognitive impairment likely contributes to multiple clinical implications, including a decreased ability to attend to and comprehend patient education materials and an inability to appropriately assess and self-manage symptoms

https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1745-7599.2011.00668.x

Bunny Pozehl

Papers

Translating the Pittsburgh Sleep Quality Index Into Arabic

The Effects of Exercise Training on Fatigue and Dyspnea in Heart Failure

Effects of an Exercise Adherence Intervention on Outcomes in Patients with Heart Failure

Heart Failure Exercise And Training Camp: effects of a multicomponent exercise training intervention in patients with heart failure.

Cognition in heart failure: An overview of the concepts and their measures