K. A. Brendel, EpiInfo?, a database and statistics program for public health professionals, CDC, 2011.

. Dokeos, Extracted from http://www.dokeos.com/, last assessed, 2016.

E. Guichard, I. Montagni, C. Tzourio, and T. Kurth, Association Between Headaches and Tinnitus in Young Adults: Cross-Sectional Study, Headache: The Journal of Head and Face Pain, vol.49, issue.6, pp.987-94, 2016.
DOI : 10.1111/head.12845

S. Hall, E. A. Vance, and V. Tech, Improving Self-efficacy in Statistics: Role of Self-explanation & Feedback, Journal of Statistics Education, vol.18, issue.3, 2010.

S. Lemeshow, L. Letenneur, J. F. Dartigues, S. Lafont, J. M. Orgogozo et al., Illustration of Analysis Taking into Account Complex Survey Considerations: The Association between Wine Consumption and Dementia in the PAQUID Study, American Journal of Epidemiology, vol.148, issue.3, 1998.
DOI : 10.1093/oxfordjournals.aje.a009639

. Moodle, Extracted from https, 2016.

P. Mercié, Evaluation of cardiovascular risk factors in HIV-1 infected patients using carotid intima-media thickness measurement, Annals of Medicine, vol.34, issue.1, pp.55-63, 2002.
DOI : 10.1080/078538902317338652

J. D. Mills and D. Raju, Teaching Statistics Online: A Decade's Review of the Literature About What Works, Journal of Statistics Education, vol.19, issue.2, 2011.

G. Packham, P. Jones, C. Miller, and B. Thomas, E???learning and retention: key factors influencing student withdrawal, Education + Training, vol.46, issue.6/7, pp.335-377, 2004.
DOI : 10.1108/00400910410555240

J. H. Park and H. J. Choi, Factors Influencing Adult Learners' Decision to Drop Out or Persist in Online Learning, Educational Technology & Society, vol.12, issue.4, pp.207-217, 2009.

R. Team, R: A language and environment for statistical computing. R Foundation for Statistical Computing, 2013.

G. E. Tudor, Teaching Introductory Statistics Online ? Satisfying the Students, Journal of Statistics Education, vol.14, issue.3, 2006.

A. A. Zumrawia, S. P. Batesa, and M. Schroedera, What Response Rates are needed to make Reliable Inferences from Student Evaluations of Teaching? Educational Research and Evaluation, An International Journal on Theory and Practice, vol.20, pp.7-8, 2014.