CHAPTER ONE
INTRODUCTION
Background to the study
             Health systems in both developed and developing countries are under pressure to improve service delivery in an ever increasing population with limited or reduced resources [Namgada 2008]. This is due to increased burden of diseases, desire to receive best quality care, advanced technology in health care, awareness of health rights, improved access to diverse health service. In health care systems, the following are needed for the provision of health services to patients/clients, efficient health polices, sufficient trained health personnel, appropriate equipments, finance [Olade, 2005]. The primary goal of all health systems is to render quality care; however, certain factors seem to hinder the efforts towards achieving this goal maximally. The global shortages of health professionals, as well as the caliber of health providers, for example, have been reported to affect the quality and outcome of care (Olade, 2005).
   World Health Organization (2009) report shows that in some developed countries, the ratio of staff to the population is 1000 to 100,000. In developing countries, it is 100 to 100,000. A report on health workforce country profile for Nigeria revealed that there were 52,408 doctors on the medical register as at December 2010, and 128,918 registered nurses [Labran, Mafe, Onajole & Lambo, 2011]. According to World Health Organization (2009) , Nigeria has a population of about 160 million; based on the data above the ratio of health professionals to the populace is expected to be; doctors 1:3052 and  nurses1:1241.
          Ozcan and Horby [2004] stated that in Africa like in several parts of the world, the number of trained health personnel has been inadequate, hence the need to use scarce resources adequately. According to Okoronkwo (2005), in most Nigerian hospitals today, there is acute shortage of health personnel; the available staff cannot meet the needs of the patients efficiently because of excessive workload. This indicates that though the demand for healthcare is increasing, the hospitals are not able to provide enough manpower to meet those health needs. The workload on existing staff therefore increases and quality of care suffers.
             Aside from the shortage of health care providers, appropriate staff mix in health service delivery is another glaring problem facing most health systems in many developing countries (McGillis, 2005).Staff mix refers to the combination of different categories of health personnel/ workers [within same or across different professional discipline[s]] that are employed for the provision of healthcare to patients in healthcare facilities. In healthcare institutions, staff mix contributes to overall outcome of care [McGillis, 2005]. The standard practice as it concerns human resource management is to provide the right number of staff [health personnel], with the right knowledge, skills and attitude, performing the right tasks in the right place, at the right time to achieve the predetermined health targets [Mark and Staton, 2003: International  Council of Nurses (ICN), 2006].
            The ratio of staff mix to the patient is the factor on which the process of care in a given unit or facility depends This staff mix ratio could be in terms of proportion of available staff to the patient population, years of working experience, professional qualification, number of year staff worked in a unit, cadre of staff[junior/senior]. According to Needleman (2005), the standard staff mix to patient ratio depending on unit size is 1:4-6 patients. In more intensive care units, it is 1:2-3 patients. The Nursing and Midwifery Council of Nigeria (N&MCN, 2005) stipulates that the staff/patient ratio in Clinical practice for different cadres of staff and depending on the unit and type of patient managed, is 1:4-5,( for general wards) and 1:1-3 (for intensive care units).
             Assigning the right number of staff to a unit ensures that patients are properly cared for and discharged the right time (Cheryl and Clark, 2007)  Aiken [2007]states that higher staff mix to patient ensure that appropriate direct care is given to patients. Staff is also able to give in-depth assessment and surveillance of clinical changes on an ongoing basis. Staff has more time to monitor changes in patient’s condition and timely intervention given for identified problems. All these are expected to impact on the outcome of care.
            According to Quan [2006] patient’s outcome is an observable change which results from patient’s exposure to interventions or care environment. It is the result or consequence of an event, a disease, a drug or a treatment. The outcome for medical and surgical cases include; change in patient’s functional status positively or negatively within the period of hospitalization, occurrence of adverse events like death, infection, medical errors, pressure ulcer, urinary tract infection etc.
            Studies have shown that there is a relationship between staff mix and outcome of care. Strasser (2005) reports that positive outcome is associated with well trained workers, staff experience and training, greater intensity of care, greater therapy, general staffing levels as well as team work, team order and organization. On the other hand, negative outcome is associated with poor recruitment and retention, delayed care or absent workers, lack of facilities and supplies, poor administrative management, severity of illness [chronic or acute] and co morbidity factors (Anderson, Weiner & Khatusky, 2006).