RESUMO
In this paper, 91 different tests for exponentiality are reviewed. Some of the tests are universally consistent while others are against some special classes of life distributions. Power performances of 40 of these different tests for exponentiality of datasets are compared through extensive Monte Carlo simulations. The comparisons are conducted for different sample sizes of 10, 25, 50 and 100 for different groups of distributions according to the shape of their hazard functions at 5 percent level of significance. Also, the techniques are applied to two real-world datasets and a measure of power is employed for the comparison of the tests. The results show that some tests which are very good under one group of alternative distributions are not so under another group. Also, some tests maintained relatively high power over all the groups of alternative distributions studied while some others maintained poor power performances over all the groups of alternative distributions. Again, the result obtained from real-world datasets agree completely with those of the simulation studies.
RESUMO
Insurgency in the Northeastern Nigeria has left millions of adolescents internally displaced, with deplorable living conditions that affect adolescents' sexual and reproductive health (SRH). The aim of the study was to identify SRH needs and problems of Internally Displaced Adolescents (IDAs) and ways of improving their SRH. The study used cross-sectional design. Data were collected from 396 IDAs using questionnaire and focus group discussions. Descriptive and Chi square statistics were used to analyze data from the questionnaire, using Statistical Package for the Social Sciences (SPSS) version 20.0 while qualitative data were thematically analyzed. Results showed that sexuality education (83.2%), safe motherhood services (81.6%) and family planning services (71.9%) were important SRH needs while complications of pregnancy (83.1%), early sex experimentation (81.8%), unsafe sex (80.1%) were among the SRH problems. Gender, educational attainment, age, religion, and marital status differed significantly (≤ .05) with sexuality education and family planning needs of IDAs. Suggested ways of improving IDAs' SRH include making SRH services accessible in internally displaced persons' (IDPs) camps.
