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Article History

Received: 5 November 2017

Accepted: 20 April 2018

First Online: 27 April 2018

Authors’ information

: AST is an assistant professor of statistics department at Bahir Dar University, Ethiopia with four publications previously. Currently, he is a doctoral student in statistics department entitled “Statistical methods for analysis of longevity of medication on basis of monthly HAART adherence treatment response in North West Ethiopia (Amhara region)” with the close supervision of the second and third authors. PN is a senior associate professor of the University of South Africa with more than 10 publications. TZ is a senior and full professor of college of mathematics, Statistics and Computer science at university of Kwazulu Natal. He has more than sixty (70) publications in reputable journals.All the three authors together had three publications using the same data with the current one and on the same study area. This will be the fourth article for our PhD paper. The previous three articles are;OrderedList removed

: The data was collected previously by the health staff for providing treatment/ to start HAART. The study was approved by the two committees namely Bahir Dar University’s Ethical Approval committee, Bahir Dar University, Ethiopia with reference number, Ref≠ RCS/1412/2006 and School of Science Research Ethics Review Committee (which belongs to University of South Africa, UNISA), South Africa with reference number, Ref≠ : 2015 − SSR − ERC_006.

: There is no financial and non-financial competing interest between authors and between authors and institutions.

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