COMPARISON OF GENERALIZED ESTIMATING EQUATIONS AND QUADRATIC INFERENCE FUNCTIONS IN SUPERIOR VERSUS INFERIOR AHMED GLAUCOMA VALVE IMPLANTATION

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

KHAJEH KAZEMI RAZIEH; GOLESTAN BANAFSHEH; MOHAMMAD KAZEM; MAHMOUDI MAHMOUD; NEDJAT SAHARNAZ; PAKRAVAN MOHAMMAD

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS) Year:2011 | Volume:16 | Issue:3 Page(s): 235-244

Download Full-Text

View:

318

Download:

178

Cites:

Information Journal Paper

Title

COMPARISON OF GENERALIZED ESTIMATING EQUATIONS AND QUADRATIC INFERENCE FUNCTIONS IN SUPERIOR VERSUS INFERIOR AHMED GLAUCOMA VALVE IMPLANTATION

Author(s)

Keywords

LONGITUDINAL DATA

GENERALIZED ESTIMATING EQUATION

QUADRATIC INFERENCE FUNCTION

AHMED GLAUCOMA VALVE IMPLANTATION

Abstract

BACKGROUND: The celebrated GENERALIZED ESTIMATING EQUATIONs (GEE) approach is often used in LONGITUDINAL DATA analysis.While this method behaves robustly against misspecification of the working correlation structure, it has some limitations on efficacy of estimators, goodness-of-fit tests and model selection criteria. The QUADRATIC INFERENCE FUNCTIONs (QIF) is a new statistical methodology that overcomes these limitations.METHODS: We administered the use of QIF and GEE in comparing the superior and inferior Ahmed glaucoma valve (AGV) implantation, while our focus was on the efficiency of estimation and using model selection criteria; we compared the effect of implant location on intraocular pressure (IOP) in refractory glaucoma patients. We modeled the relationship between IOP and implant location, patient's sex and age, best corrected visual acuity, history of cataract surgery, preoperative IOP and months after surgery with assuming unstructured working correlation.RESULTS: 63 eyes of 63 patients were included in this study; 28 eyes in inferior group and 35 eyes in superior group.The GEE analysis revealed that preoperative IOP has a significant effect on IOP (p=0.011). However, QIF showed that preoperative IOP, months after surgery and squared months are significantly associated with IOP after surgery (p<0.05). Overall, estimates from QIF are more efficient than GEE (RE=1.272).CONCLUSIONS: In the case of unstructured working correlation, the QIF is more efficient than GEE. There were no considerable difference between these locations; our results confirmed previously published works which mentioned it is better that glaucoma patients undergo superior AGV implantation.

Cites

No record.

References

No record.

Cite

APA: Copy

KHAJEH KAZEMI, RAZIEH, GOLESTAN, BANAFSHEH, MOHAMMAD, KAZEM, MAHMOUDI, MAHMOUD, NEDJAT, SAHARNAZ, & PAKRAVAN, MOHAMMAD. (2011). COMPARISON OF GENERALIZED ESTIMATING EQUATIONS AND QUADRATIC INFERENCE FUNCTIONS IN SUPERIOR VERSUS INFERIOR AHMED GLAUCOMA VALVE IMPLANTATION. JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS), 16(3), 235-244. SID. https://sid.ir/paper/564650/en

Vancouver: Copy

KHAJEH KAZEMI RAZIEH, GOLESTAN BANAFSHEH, MOHAMMAD KAZEM, MAHMOUDI MAHMOUD, NEDJAT SAHARNAZ, PAKRAVAN MOHAMMAD. COMPARISON OF GENERALIZED ESTIMATING EQUATIONS AND QUADRATIC INFERENCE FUNCTIONS IN SUPERIOR VERSUS INFERIOR AHMED GLAUCOMA VALVE IMPLANTATION. JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS)[Internet]. 2011;16(3):235-244. Available from: https://sid.ir/paper/564650/en

IEEE: Copy

RAZIEH KHAJEH KAZEMI, BANAFSHEH GOLESTAN, KAZEM MOHAMMAD, MAHMOUD MAHMOUDI, SAHARNAZ NEDJAT, and MOHAMMAD PAKRAVAN, “COMPARISON OF GENERALIZED ESTIMATING EQUATIONS AND QUADRATIC INFERENCE FUNCTIONS IN SUPERIOR VERSUS INFERIOR AHMED GLAUCOMA VALVE IMPLANTATION,” JOURNAL OF RESEARCH IN MEDICAL SCIENCES (JRMS), vol. 16, no. 3, pp. 235–244, 2011, [Online]. Available: https://sid.ir/paper/564650/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops