Assessing heterogeneity in meta-analysis: Q statistic or I2 index?
Tania B Huedo-Medina et al. Psychol Methods. 2006 Jun.
Abstract
In meta-analysis, the usual way of assessing whether a mix 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(2) index has been proposed đồ sộ quantify the degree of heterogeneity in a meta-analysis. In this article, the performances of the Q test and the confidence interval around the I(2) index are compared by means of a Monte Carlo simulation. The results show the utility of the I(2) index as a complement đồ sộ the Q test, although it has the same problems of power with a small number of studies.
Bạn đang xem: i2 + al
PubMed Disclaimer
Similar articles
-
Hypothesis tests for population heterogeneity in meta-analysis.
Viechtbauer W. Viechtbauer W. Br J Math Stat Psychol. 2007 May;60(Pt 1):29-60. doi: 10.1348/000711005X64042. Br J Math Stat Psychol. 2007. PMID: 17535578
-
Confidence intervals for the overall effect size in random-effects meta-analysis.
Sánchez-Meca J, Marín-Martínez F. Sánchez-Meca J, et al. Psychol Methods. 2008 Mar;13(1):31-48. doi: 10.1037/1082-989X.13.1.31. Psychol Methods. 2008. PMID: 18331152
-
A comparison of heterogeneity variance estimators in combining results of studies.
Sidik K, Jonkman JN. Sidik K, et al. Stat Med. 2007 Apr 30;26(9):1964-81. doi: 10.1002/sim.2688. Stat Med. 2007. PMID: 16955539
-
Interpretation of tests of heterogeneity and bias in meta-analysis.
Ioannidis JP. Ioannidis JP. J Eval Clin Pract. 2008 Oct;14(5):951-7. doi: 10.1111/j.1365-2753.2008.00986.x. J Eval Clin Pract. 2008. PMID: 19018930 Review.
Xem thêm: đề thi tuyển sinh lớp 10 môn toán
-
Statistical inference by confidence intervals: issues of interpretation and utilization.
Sim J, Reid N. Sim J, et al. Phys Ther. 1999 Feb;79(2):186-95. Phys Ther. 1999. PMID: 10029058 Review.
Cited by
-
Du Q, Jiang Y, Liu Y. Du Q, et al. Int Urol Nephrol. 2023 Sep 23. doi: 10.1007/s11255-023-03790-z. Online ahead of print. Int Urol Nephrol. 2023. PMID: 37740847 Review.
-
Understanding the characteristics of idiopathic osteoporosis by a systematic review and meta-analysis.
Sadhukhan S, Sethi S, Rajender S, Mithal A, Chattopadhyay N. Sadhukhan S, et al. Endocrine. 2023 Sep 21. doi: 10.1007/s12020-023-03505-5. Online ahead of print. Endocrine. 2023. PMID: 37733181
-
Long-term cisplatin nephrotoxicity after childhood cancer: a systematic review and meta-analysis.
Xem thêm: giải địa 10 cánh diều
Schofield J, Harcus M, Pizer B, Jorgensen A, McWilliam S. Schofield J, et al. Pediatr Nephrol. 2023 Sep đôi mươi. doi: 10.1007/s00467-023-06149-9. Online ahead of print. Pediatr Nephrol. 2023. PMID: 37726572 Review.
-
Prevalence of neck pain and its associated factors in Africa: a systematic review and meta-analysis protocol.
Mukhtar NB, Ibrahim AA, Mohammed J. Mukhtar NB, et al. BMJ Open. 2023 Sep 18;13(9):e074219. doi: 10.1136/bmjopen-2023-074219. BMJ Open. 2023. PMID: 37723112 Free PMC article.
Bình luận