“Improve the Fitment Quality of the Binary Response Model With Practical Application to those Infected With the Covid-19 Epidemic” (2022) Journal of Al-Rafidain University College For Sciences ( Print ISSN: 1681-6870 ,Online ISSN: 2790-2293 ), 52(2), pp. 20–31. doi:10.55562/jrucs.v52i2.539.