Soil Erosion Control and Damage Costs in Nigerian Small Farms: Implications for Farm Growth and Sustainability

In Nigeria 90% of the agricultural primary produce is in the hands of small holders cultivating between 0.8-4 hectares. Farm size expansion is limited by population pressure, land fragmentation, poor market opportunities and lack of finance. This article presents estimates of soil erosion control(SEC) and soil erosion damage costs (SEDC) in small farmers' fields in Nigeria and examines the contents and direction of the country’s agriculture and environment policies vis-à-vis the SEC among small farmers. It was found that 24% of the farmers’ spending on tillage/cultural practices was directed at the institution of SEC measures, and that SEC-related defensive expenditures was 3.7 times more than the estimated SEDCs. The capacity of small farmers to respond to soil degradation is severely limited. Most SEC measures deployed derive from non-tradable inputs blurred by incomplete/missing markets for environmental assets. Yet farm development and environmental policies in Nigeria have dwelt on supply-side interventions based on marketable inputs, and have been largely ineffective. Policy and institutional reforms are needed to increase and focus support to farmers to increase defensive expenditures for SEC.Soil erosion, damage costs, farm growth, Environmental Economics and Policy, Production Economics,

Effect of Vitamin C Supplementation on platelet aggregation and serum electrolytes levels in streptozotocin-induced diabetes mellitus in rats

Diabetes mellitus (DM) is a disease condition characterised by hyperglycemia; free radical and abnormal haematological indices. Vitamin C can reduce free radical generation and ameliorate adverse conditions of diabetes mellitus. The aim of the present study is to investigate the effect of vitamin C on platelet aggregation and electrolyte levels in Type 1 DM. Male Wistar rats were divided into four groups namely control, DM, DM +Vitamin C and Vitamin C groups. Rats were made diabetic with a single dose of streptozotocin (65 mg/kg) intraperitoneally. Vitamin C was administered orally to diabetic and normal rats at 200 mg/kg body weight for 28 days. Blood samples were analyzed for hematological parameters, platelet aggregation, and serum electrolyte levels. Blood glucose in DM+ Vitamin C group (9.9 ± 1.8 mmol/L) was significantly reduced (p<0.01) compared to DM group (32.2 ± 2.1 mmol/L) and significantly higher (p<0.05) than control (4.4 ± 0.8 mmol/L). Haemoglobin (Hb) concentration in DM group (12 ± 0.1 g/dL) was significantly reduced (p<0.01) when compared with control groups (14 ± 0.24 g/dL) and significantly increased (p<0.05) in the DM+vitamin C group (13.5 ± 0.5 g/dL) compared with the diabetic group. The mean corpuscular volume values in DM (68.66 ± 0.5 fL) and DM+vitamin C groups (68.11 ± 0.4 fL) were significantly higher (p<0.01) than the control (59.49 ± 0.5fL). Platelet count in DM group (523 ± 8.5 x109/L) was significantly raised (p<0.01) when compared to control (356 ± 6.2 x109/L) and significantly reduced (p<0.01) in DM+ vitamin C-treated group (385 ± 7.8 x109/L) compared with DM group. Platelet aggregation and serum sodium/potassium ratios was significantly reduced (p<0.01) in DM+vitamin C compared with DM group. These results suggest that oral vitamin C administration increases haemoglobin, reduced plasma glucose level, platelet count, serum sodium/potassium ion ratio and inhibits platelet aggregation in streptozotocin-induced DM in rats.Keywords: Diabetes mellitus, electrolytes, Haematological parameters, Platelet aggregation, Red cell indices, Vitamin

Common Errors in Proposals and Dissertations and How to Avoid them: A Resident’s Guide

Background: The dissertation is now a necessary part of the fellowship examinations of both the West African college of surgeons and physiciansand the national postgraduate medical college of Nigeria. Many resident doctors are confused about how to get on with their proposals and thedissertations. This confusion often leads to frustrations, and in extreme cases to unnecessary delay in attempting the examinations when due. Aim: This study aims to identify the common errors made by resident doctors in the proposal and dissertations and to recommend the solutionsto such problems. Methods: This survey is based on a direct interview with experienced examiners in both colleges. The examiners were asked to list what they observed as the common problems they identified concerning the proposal and dissertation of residents. The answers were collated and categorized according to the frequencies of problems identified. Based on the response of the examiners, a questionnaire was designed and administered to the senior residents who are at various stages of writing their dissertations. Results: Some of the findings include starting the proposal too late, difficulty in choosing a topic, mediocre and tedious literature search, difficulty in finding appropriate supervisors, poor appreciation of basic research design and necessary statistical tests, improper presentation of results and  wrong referencing. Others are editorial mistakes, pagination errors, and the lack of knowledge on proper attitude and skill during the defense.  Conclusion: Starting too late is the most common error made by the resident doctor in the dissertation. Residents should choose a topic within 6  months of passing the membership examination. Keywords: Dissertations, errors, proposals, resident doctor

Bacteriological Quality of Foods and Water Sold by Vendors and in Restaurants in Nsukka, Enugu State, Nigeria: A Comparative Study of Three Microbiological Methods

Bacterial count in prepared food or water is a key factor in assessing the quality and safety of food. It also reveals the level of hygiene adopted by food handlers in the course of preparation of such foods. This comparative study evaluated the bacteriological quality of food and water consumed in Nsukka, Enugu state, Nigeria, using three bacteria enumeration methods. Data obtained are assumed to reflect the level of personal and environmental hygiene in the study population. Ten types of foods\u2014beans, yam, abacha, okpa, moimoi, pear, cassava foofoo, rice, agidi, and garri\u2014and 10 water samples were evaluated for bacteriological quality, precisely determining the level of coliform contamination, using the most probable number (MPN), lactose fermentation count (LFC), and Escherichia coli count (ECC) methods. Bacterial counts differed significantly (p<0.05) among the various food samples. However, this did not differ significantly in the three methods used for the enumeration of coliforms, suggesting that any of the three methods could be validly used for such studies with confidence. Escherichia coli and Klebsiella pneumoniae were the two major coliforms identified among 98 coliform isolates obtained from the various food samples, of which 78 (79.6%) were assumed to be of human origin on account of their ability to grow at 44 oC. The level of coliform contamination in the food samples from vendors and restaurants (geometric mean count 7.64-9.21; MPN 6550) were above the accepted 104 colony-forming unit/g or MPN 6410 limits. The results of the study, therefore, call for stringent supervision and implementation of food-safety practices and regular education on food and personal hygiene among food vendors

Estimates of Mortality Benefit From Ideal Cardiovascular Health Metrics: A Dose Response Meta-Analysis

Background Several studies have shown an inverse relationship between ideal cardiovascular health (CVH) and mortality. However, there are no studies that pool these data to show the shape of the relationship and quantify the mortality benefit from ideal CVH. Methods and Results We conducted a systematic internet literature search of multiple databases including MEDLINE, Web of Science, Embase, CINAHL, and Scopus for longitudinal studies assessing the relationship between ideal CVH and mortality in adults, published between January 1, 2010, and May 31, 2017. We included studies that assessed the relationship between ideal CVH and mortality in populations that were initially free of cardiovascular disease. We conducted a dose‐response meta‐analysis generating both study‐specific and pooled trends from the correlated log hazard ratio estimates of mortality across categories of ideal CVH metrics. A total of 6 studies were included in the meta‐analysis. All of the studies indicated a linear decrease in (cardiovascular disease and all‐cause) mortality with increasing ideal CVH metrics. Overall, each unit increase in CVH metrics was associated with a pooled hazard ratio for cardiovascular disease mortality of 0.81 (95% confidence interval, 0.75–0.87), while each unit increase in ideal CVH metrics was associated with a pooled hazard ratio of 0.89 (95% confidence interval, 0.86–0.93) for all‐cause mortality. Conclusions Our meta‐analysis showed a strong inverse linear dose‐response relationship between ideal CVH metrics and both all‐cause and cardiovascular disease–related mortality. This study suggests that even modest improvements in CVH is associated with substantial mortality benefit, thus providing a strong public health message advocating for even the smallest improvements in lifestyle

Assessment of age at menarche and menstrual pattern among secondary school girls in Awka, Southeast Nigeria

Background: Menarche is an important physiological milestone in girls and this usually occurs during their secondary school years. The menstrual pattern may vary in these adolescents. This knowledge may assist in counselling the young girls on reproductive health issues.Methods: A cross-sectional study of female secondary school students from Kenneth Dike secondary school, Awka; Amaenyi girls’ secondary school and community secondary school, Okpuno, all in Awka, Anambra state of Nigeria. All together 545 students were selected following informed consent. The study instrument was a pre-tested, semi-structured and self-administered questionnaire. Data analysis was done with IBM SPSS 20 software. Tests of association between variables were done with Fisher’s exact test and the level of significance set at p≤0.05. Results: The mean age of the 545 respondents was 16.79±1.736 years and majority of them are of the Igbo ethnic group (90.5%). The average age at menarche was 12.77±1.159 years. There is a significant difference between the age at menarche and the father’s occupation. The modal duration of flow was 4 days (48.7%) while 95.2% had a normal cycle length of 21-35 days.Conclusions: The average age of menarche of secondary school girls in Awka was 12.77±1.159 years. Most of the students had normal menstrual flow duration of 2-7 days with a cycle length of 21-35 days

The relationship of erectile dysfunction and subclinical cardiovascular disease: A systematic review and meta-analysis

Erectile dysfunction (ED) is associated with cardiovascular disease (CVD) and CVD mortality. However, the relationship between ED and subclinical CVD is less clear. We synthesized the available data on the association of ED and measures of subclinical CVD. We searched multiple databases for published literature on studies examining the association of ED and measures of subclinical CVD across four domains: endothelial dysfunction measured by flow-mediated dilation (FMD), carotid intima–media thickness (cIMT), coronary artery calcification (CAC), and other measures of vascular function such as the ankle–brachial index, toe–brachial index, and pulse wave velocity. We conducted random effects meta-analysis and meta-regression on studies that examined an ED relationship with FMD (15 studies; 2025 participants) and cIMT (12 studies; 1264 participants). ED was associated with a 2.64 percentage-point reduction in FMD compared to those without ED (95% CI: –3.12, −2.15). Persons with ED also had a 0.09-mm (95% CI: 0.06, 0.12) higher cIMT than those without ED. In subgroup meta-analyses, the mean age of the study population, study quality, ED assessment questionnaire (IIEF-5 or IIEF-15), or the publication date did not significantly affect the relationship between ED and cIMT or between ED and FMD. The results for the association of ED and CAC were inconclusive. In conclusion, this study confirms an association between ED and subclinical CVD and may shed additional light on the shared mechanisms between ED and CVD, underscoring the importance of aggressive CVD risk assessment and management in persons with ED

Assessment of knowledge, attitude and practice of COVID-19 guidelines among health care workers in Alex Ekwueme Federal University teaching hospital, Abakaliki, Ebonyi State, Nigeria

Background: COVID-19 is a major Public Health challenge that has affected the world’s economy. Assessment of the knowledge, attitude and practices of Healthcare workers (HCWs) towards COVID-19 can improve or sustain the successes recorded by relevant agencies in the fight against COVID-19.Methods: a cross-sectional survey was done using semi-structured questionnaires and simple sampling technique. Data collected were analyzed using SPSS version 22.Results: Out of the 368 respondents, 205 were doctors while 150 were nurses. Others were clerical workers, administrative officers and maintenance workers. Knowledge of COVID-19 was generally high amongst respondents recording a correct response to questions about knowledge of COVID-19 in more than 90% of the case. However, the attitude and practice of COVID-19 infection, prevention and control protocols were poor. Out of the respondents, 41.8% would not stay at home if they had minor COVID-19 like symptoms; only 39.4% would take responsibility to ensure people around them follow good respiratory hygiene. Respondents who would keep social distancing while talking with co-workers, ensure safe disposal of personal protective equipment (PPEs) and safe waste management of PPEs were 56%, 39.9% and 53.8% respectively.Conclusions: Knowledge of COVID-19 prevention protocols is high but attitude/practice of these laid out protocols still desires a lot of effort from HCWs. There is need for training/retraining of HCWs on COVID-19 infection, prevention and control strategies to ensure the success being recorded against the disease is sustained while preventing the possibility of a second wave of infection

Desire to practice postpartum contraception among antenatal women at Awka, Southeast Nigeria

Background: Postpartum contraception enables the nursing woman recover from the effects of pregnancy and childbirth before embarking on another pregnancy. It also promotes child welfare. The assessment of the desire by pregnant women to take up postpartum contraceptive service will help the planning of good delivery of this service.Methods: A cross-sectional study of antenatal clinic attendees at Chukwuemeka Odumegwu Ojukwu Teaching Hospital, Awka was done using a pretested interviewer-administered questionnaire. Data was analyzed with IBM SPSS version 20 software and associations between variables were tested with Chi square. Level of significance was set at P ≤0.05.Results: A total of 262 antenatal women were interviewed. The mean age of the respondents was 29.1±6.1 years while the mean parity was 2.5±1.5. Two hundred and one of the study women (76.7%) had the desire to practice postpartum contraception after the index pregnancy while only 9 (3.4%) were unsure whether they had the desire or not. Multiparous women are more likely to desire postpartum contraception (P <0.01). Also, previous use of contraception (P<0.01), desired index pregnancy (P=0.01) and being married or single (P=0.02) are all significantly associated with the desire to practice postpartum contraception.Conclusions: There was a high level of desire to practice postpartum contraception among antenatal clinic attendees at Awka. Parity, marital status, desired index pregnancy and previous practice of contraception all influence this desire