NotesFAQContact Us
Collection
Advanced
Search Tips
Publication Date
In 20250
Since 20240
Since 2021 (last 5 years)0
Since 2016 (last 10 years)0
Since 2006 (last 20 years)1
Descriptor
Comparative Analysis1
Construct Validity1
Evaluation Research1
Heterogeneous Grouping1
Homogeneous Grouping1
Intervals1
Meta Analysis1
Methods Research1
Monte Carlo Methods1
Q Methodology1
Research Problems1
More ▼
Source
Psychological Methods1
Author
Botella, Juan1
Huedo-Medina, Tania B.1
Marin-Martinez, Fulgencio1
Sanchez-Meca, Julio1
Publication Type
Journal Articles1
Reports - Evaluative1
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Showing one result Save | Export
Assessing Heterogeneity in Meta-Analysis: Q Statistic or I[squared] Index?
Peer reviewed Peer reviewed
Direct linkDirect link
Huedo-Medina, Tania B.; Sanchez-Meca, Julio; Marin-Martinez, Fulgencio; Botella, Juan – Psychological Methods, 2006
In meta-analysis, the usual way of assessing whether a set of single studies is homogeneous is by means of the Q test. However, the Q test only informs meta-analysts about the presence versus the absence of heterogeneity, but it does not report on the extent of such heterogeneity. Recently, the I[squared] index has been proposed to quantify the…
Descriptors: Meta Analysis, Intervals, Monte Carlo Methods, Comparative Analysis