The sample size calculation is based on three commonly used mediation tests: Sobel's method, distribution of product method and the bootstrap method. Among the three methods of testing the mediation effects, Sobel's method required the largest sample size to achieve 80% power. Bootstrapping and...
specifically through the frequency of each of the lexical elements associated by participants with the inductor used (i.e., “pornography user”) and the co-occurrences of these elements. Moreover, this method provides an assessment of the degree to which each lexical...
Methods: In this study, we aimed to explore the causal relationship between T2DM and AD using bidirectional Mendelian randomization (MR) analysis. Mediation MR analysis was conducted to explore and quantify the possible mediation effects of 1400 metabolites in T2DM and AD. Results: The results of ...
To investigate the associations between residential green space and mental health among people living alone via the potential serial mediation of green space visits and social restoration processes (RQ1) and to compare these processes to respondents living with a partner (RQ2), we specified a multi...
Adjustment for emotional exhaustion in the association between BMI and sick leave hardly changed the effect size and significance remained. CONCLUSIONS: The association between BMI status and sick leave can be explained partially by the presence of emotional exhaustion. Workplace health promotion ...
[26] have suggested that the ratio of sample size to number of items should be ≥ 10:1; accordingly, we calculated that a sample with 400 participants would meet this standard. The study was conducted in accordance with the guidelines detailed in the Declaration of Helsinki and was approved ...
There is strong evidence that dropping out of school has short-term and long-term effects for the individual, the family, the community, and other strata in society. In South Africa, learners dropping out of school has increased. The link between intenti
Abstract: The present study examines the relationship between quality of work life, job involvement and job satisfaction of public transportation bus drivers in Punjab, India. The sample of the study constituted 483 bus drivers working in three state road transport undertakings in Punjab, namely ...
Huber, Martin, Michael Lechner, and Giovanni Mellace (2016) `The finite sample per- formance of estimators for mediation analysis under sequential conditional indepen- dence'. Journal of Business & Economic Statistics 34 (1), pp. 139-160....
Bayesian methods have the potential for increasing power in mediation analysis (Koopman, Howe, Hollenbeck, & Sin, 2015; Yuan & MacKinnon, 2009). This article compares the power of Bayesian credibility intervals for the mediated effect to the power of normal theory, distribution of the product, ...