Medical and Dental Consultantsí Association of Nigeria
Home - About us - Editorial board - Search - Ahead of print - Current issue - Archives - Submit article - Instructions - Subscribe - Advertise - Contacts - Login 
  Users Online: 2980   Home Print this page Email this page Small font sizeDefault font sizeIncrease font size
Year : 2019  |  Volume : 22  |  Issue : 9  |  Page : 1281-1285

Psychometric evaluation of medication adherence rating scale (MARS) among Nigerian patients with schizophrenia

Department of Clinical Services, Neuropsychiatric Hospital Aro, Abeokuta, Ogun, Nigeria

Correspondence Address:
Dr. O A Sowunmi
Consultant Emergency Psychiatrist, Neuropsychiatric Hospital, Aro, PMB 2002, Abeokuta, Ogun
Login to access the Email id

Source of Support: None, Conflict of Interest: None

DOI: 10.4103/njcp.njcp_325_18

Rights and Permissions

Background: The Medication Adherence Rating Scale (MARS) is a 10-item self-report measure of medication adherence in psychosis which is a vital predictor of illness course and outcome in patient with schizophrenia. The initial and subsequent studies have shown that MARS has good reliability and validity scores after correction for the small sample size in the index study. Aim: This study aimed to determine the psychometric properties of MARS among outpatients with schizophrenia at the outpatient clinic of the Neuropsychiatric Hospital Aro Abeokuta Ogun State Nigeria. Methods: Intra-class correlation coefficient (ICC) was used to determine the internal consistency, item-total correlations, and reliability of the instrument. Factor analysis was done using principal component analysis with varimax rotation. Results: The intra-class correlation coefficient (ICC) for these 10 items (at time T1) was 0.6 with a P value of <0.001 while for the test--retest analysis was 0.7 with a P value of 0.04. A principal components factor analysis with varimax rotation produced a four-factor solution and factor 4 was found to be the most internally consistent, with Cronbach's alpha of 0.63. Conclusion: This study supports the internal consistency, test--retest reliability, and constructs validity of the MARS.

Print this article     Email this article
 Next article
 Previous article
 Table of Contents

 Similar in PUBMED
   Search Pubmed for
   Search in Google Scholar for
 Related articles
 Citation Manager
 Access Statistics
 Reader Comments
 Email Alert *
 Add to My List *
 * Requires registration (Free)

 Article Access Statistics
    PDF Downloaded150    
    Comments [Add]    

Recommend this journal