... any productivesystem, and health care is not the exception. As Gupta and Dal Poz [[1], p.2] state, the ‘functi oning and growthof the health systems depend on the time, effort and skill mix provided ... variables [23,24], logit-log and arcsine-log model [16]). Furthermore, the results fromthe studies come to different conclusions.Kim and Moody [25], and Hertz and Landon [26]found no significant ... doctors, density of health workers, and density of nurses and midwives) and the health out-comes (e.g. maternal, infant and under-five mortalityrate, vaccine coverage, and coverage of skilled birthattendants).Not...