[1] Univ Hlth & Allied Sci, Fred N Binka Sch Publ Hlth, Dept Epidemiol & Biostat, PMB 31,Hohoe Campus, Hohoe, Volta Region, Ghana
[2] Coll Nursing & Midwifery, Res & Innovat Unit, POB 10, Nalerigu, North East Regi, Ghana
[3] Univ Hlth & Allied Sci, Gynaecol Sch Med, Dept Obstet, Ho, Ghana
[4] Univ Dev Studies, Sch Publ Hlth, Dept Epidemiol & Biostat, Tamale, Ghana