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Multicentric Observational Study on Quality of Life in Glaucoma

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01742104
Recruitment Status : Completed
First Posted : December 5, 2012
Last Update Posted : April 20, 2015
Information provided by (Responsible Party):
Mario Negri Institute for Pharmacological Research

Tracking Information
First Submitted Date December 3, 2012
First Posted Date December 5, 2012
Last Update Posted Date April 20, 2015
Study Start Date March 2012
Actual Primary Completion Date February 2015   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures
 (submitted: December 4, 2012)
Quality of life questionnaires [ Time Frame: up to 12 months ]
National Eye Institute Visual Function Questionnaire (NEI-VFQ-25 - Italian Version, Jan 2003) Glaucoma Symptom Scale (GSS - Italian Version, April 2011)
Original Primary Outcome Measures Same as current
Change History
Current Secondary Outcome Measures Not Provided
Original Secondary Outcome Measures Not Provided
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
Descriptive Information
Brief Title Multicentric Observational Study on Quality of Life in Glaucoma
Official Title Multicentric Observational Clinical Study on Quality of Life in Patients With Glaucoma in Italy
Brief Summary

The study aims to evaluate the quality of life (QoL) of patients affected by Primary Open-Angle Glaucoma (POAG), using 2 QoL questionnaires:

  1. Glaucoma Symptom Scale (GSS) and
  2. National Eye Institute Visual Function Questionnaire (NEI-VFQ -25). The study will be conducted on patients with well known diagnosis of POAG (transversal phase) and on patients with first diagnosis of POAG (longitudinal phase).
Detailed Description

The study provides two levels of investigation, the first one (transversal phase), for all patients enrolled in the participating centers and the second one (longitudinal phase) conducted in a single cohort of patients with new diagnosis of POAG at enrollment.

The study will take part in around 20 centers specialized in glaucoma treatment and care, distributed throughout the Italian country area. The study aims to recruit a total of 3000 patients, around 200 of which with early diagnosis: they will represent the longitudinal cohort.

The frequency of visits and the type of examinations will follow the normal clinical practice.

The transversal phase consists of a single visit in which all socio-demographic and clinical characteristics of patients will be collected; during this visit patients will receive the NEI-VFQ 25 and the GSS questionnaires for measuring QoL (they have be filled in by the patient himself). For newly diagnosed patients, data collected during this visit will be consider as baseline, then they will enter in the longitudinal phase and will underwent two subsequent visits, the first one after about 6 months from baseline and the second one after a further 6 months (12 months from baseline). During the two subsequent visits the same data as the baseline will be collected, excluding for the socio-demographic data.

Patients will underwent examinations and therapy suitable for their disease treatment, based on physician judgment and according to the normal clinical practice.

All patient data will be collected on Case Report Form(CRF). All data contained in the CRF and in the QoL questionnaires, will be entered into an electronic database and will be checked in order to assess the plausibility, internal consistencies, errors or missing values. For each missing/loose/illegible/wrong data a request for clarification will be automatically generated by the system; it will be named "Query Form" and will be sent to the investigator for answers. At the end of the validation process, the database will be "frozen" and it will be used for statistical analysis.

The data were collected in an absolutely anonymous way. No data can be traced back up to the patient personal information or history.

All patients enrolled in the study, except for those with inclusion/exclusion criteria violations, will be considered in the statistical analysis.

The general characteristics of the study sample will be described. Qualitative variables will be described by means of the absolute and relative frequencies calculation, those quantitative with mean, standard deviation, quartiles, minimum, maximum, number of observations.

With regard to the QoL scale, the total score and subscale will be calculated. The same approach will be used within subgroups defined on the basis of socio-demographic and clinical characteristics.

As per the calculation of the sample size, it is estimated that at present in Italy there are 500,000 patients affected by glaucoma and about 50 centers specialized in the disease treatment.

A sample of 3000 patients with POAG and the involvement of at least 20 centers specialized in the glaucoma treatment are considered to be a representative estimation of reality in the Italian coutry area.

With a sample size of at least 3000 patients it is possible to calculate the 95%confidence interval of the estimated value of any parameter collected with an inaccuracy who not exceed 3.6%.

It is assumed that it will be possible to isolate about 200 patients in first diagnosis, in which the time course of the QOL scales scores will be described for the entire cohort and into predetermined patient subgroups.

For a successful implementation of the procedures required by the study the following activities are provided:

  • Start-up and follow-up meetings, with the aim of sharing operating procedures, training the investigators to use the study tools for the collection of data and following-up study issues;
  • Project dedicated Help Desk.

This study will be conducted according to AIFA March 20, 2008, "Guidelines for the classification and management of observational studies on drugs" and the principles expressed in the guidelines for the 'Good Epidemiology Practice' (GEP) in force in Europe.

A patient's informed consent and a consent to the processing of their data, signed by each patient, will be obtained before the study entry.

Study Type Observational
Study Design Observational Model: Cohort
Target Follow-Up Duration Not Provided
Biospecimen Not Provided
Sampling Method Non-Probability Sample
Study Population Patients with primary open-angle glaucoma (POAG).
Condition Primary Open-angle Glaucoma
Intervention Not Provided
Study Groups/Cohorts Not Provided
Publications * Riva I, Legramandi L, Katsanos A, Oddone F, Rulli E, Roberti G, Quaranta L; Italian Study Group on QoL in Glaucoma. Influence of Sociodemographic Factors on Disease Characteristics and Vision-related Quality of Life in Primary Open-angle Glaucoma Patients: The Italian Primary Open Angle Glaucoma Study (IPOAGS). J Glaucoma. 2018 Sep;27(9):776-784. doi: 10.1097/IJG.0000000000000989.

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Recruitment Information
Recruitment Status Completed
Actual Enrollment
 (submitted: April 17, 2015)
Original Estimated Enrollment
 (submitted: December 4, 2012)
Actual Study Completion Date April 2015
Actual Primary Completion Date February 2015   (Final data collection date for primary outcome measure)
Eligibility Criteria

Inclusion Criteria:

Patients with instrumental diagnosis of POAG, already being treated at the center or at the time of diagnosis

  • Age > 18 years
  • Ability to understand and answer to the questionnaires provided by the study
  • Written consent to the processing of personal data.

Exclusion criteria:

  • Female patients who are pregnant, breast-feeding or plan to become pregnant, or female patients of childbearing potential not using reliable means of birth control
  • Concurrent abuse of alcohol and drugs
  • Concurrent participation in any other clinical trial that tests drugs / medical devices within the last 30 days.
Sexes Eligible for Study: All
Ages 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers No
Contacts Contact information is only displayed when the study is recruiting subjects
Listed Location Countries Italy
Removed Location Countries  
Administrative Information
NCT Number NCT01742104
Other Study ID Numbers IRFMN-OG1
Has Data Monitoring Committee No
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement Not Provided
Responsible Party Mario Negri Institute for Pharmacological Research
Study Sponsor Mario Negri Institute for Pharmacological Research
Collaborators Not Provided
Principal Investigator: Luciano Quaranta, Professor MD Università di Brescia - Italy
PRS Account Mario Negri Institute for Pharmacological Research
Verification Date April 2015