Volunteerism and Community Mobilization for the Abolition of Fgm: Lesson Learnt from the UNV Pilot Project in Sudan.

This paper reflects on some of the lessons learnt from UNV interventions of using volunteerism to mobilize local communities to combat female genital mutilation/cutting in Sudan

Pseudoexfoliation syndrome in Ethiopian glaucoma patients

Background: Pseudoexfoliation syndrome (PXS) has variable prevalence rates in the glaucoma population depending on geographic location and racial composition of the population studied. There is no data available on this subject in Ethiopia. Objective: To determine the prevalence of PXS among Ethiopian glaucoma clinic population. Design: A prospective study. Setting: The Glaucoma Clinic of Menelik-11- Hospital, which is a tertiary eye care centre in Addis Ababa, Ethiopia. Participants: AU new patients with glaucoma or ocular hypertension (ocular HPN)seen during the study period from 1st April to 30th September 19% were included in the study. Results: Out of the 432 new patients of glaucoma or ocular HPN seen during the study, 108 patients (25%) had PXS. The age of PXS cases ranged from 32 years to 86 years (mean 62.3 years). There were 80 males and 28 females. Of the PXS patients, 104 (96.3%) were cases of chronic open angle glaucoma, while angle closure glaucoma and ocular HPN were rare comprising only two patients (1.85%) each. Conclusion: The relatively high prevalence rate of PXS among Ethiopian glaucoma clinic population found in this study stresses the need for further community-based research in order to prevent blindness due to glaucoma associated with PXS.East African Medical Journal, May 1999, 278-28

Full-Duplex Systems Using Multi-Reconfigurable Antennas

Full-duplex systems are expected to achieve 100% rate improvement over half-duplex systems if the self-interference signal can be significantly mitigated. In this paper, we propose the first full-duplex system utilizing Multi-Reconfigurable Antenna (MRA) with ?90% rate improvement compared to half-duplex systems. MRA is a dynamically reconfigurable antenna structure, that is capable of changing its properties according to certain input configurations. A comprehensive experimental analysis is conducted to characterize the system performance in typical indoor environments. The experiments are performed using a fabricated MRA that has 4096 configurable radiation patterns. The achieved MRA-based passive self-interference suppression is investigated, with detailed analysis for the MRA training overhead. In addition, a heuristic-based approach is proposed to reduce the MRA training overhead. The results show that at 1% training overhead, a total of 95dB self-interference cancellation is achieved in typical indoor environments. The 95dB self-interference cancellation is experimentally shown to be sufficient for 90% full-duplex rate improvement compared to half-duplex systems.Comment: Submitted to IEEE Transactions on Wireless Communication

RELATIONSHIP BETWEEN DISABILITY AND RADIOGRAPHIC FINDINGS OF LUMBAR DISK DEGENERATION IN SAMPLE OF IRAQI PATIENTS WITH MECHANICAL LOW BACKACHE

Objectives: Disability related to chronic low back pain (LBP) is a complex and multidimensional phenomenon all over the world. The prevalence of backache in middle age and elderly is up to 84%. This study aims to evaluate the associations of X-ray features of lumbar disk degeneration with severity of disability among patients with mechanical LBP. Methods: A cross-sectional study was conducted on a total of 300 patients with chronic mechanical LBP. Severity of disability was measured using Modified Oswestry Disability Index and intensity of backache was assessed using numeric rating scale (0–10). X-ray features of lumbar disc degeneration according to Lane classification and spondylolisthesis were assessed in lateral recumbent lumbar X-rays. Results: The mean age of our sample was 52.45±7.87 and 71.7% of involved patients were women. Most patients were recorded as overweight or obese. The findings of disk space narrowing were mild in 65.7%, moderate in 28.7%, and severe in 5.6%, where the presence of osteophytes were small in 76.9%, moderate in 20.5%, and large in 2.6%. Regarding disability, two-third of cases were focused on minimal disability, followed by moderate, severe, and crippled as (26%), (6%), and (2%), respectively. There was highly significant association between women and pain radiation to legs (p=0.004). Obesity and overweight had meaningless effects on all markers. Conclusions: The severity of disability was significantly more in women, high intensity of lower back pain, presence of pain radiating to legs, moderate/severe disk space narrowing on X-ray, and disk degenerative disease score on X-ray, while age, presence of osteophytes and spondylolisthesis, body mass index, and pain duration were not associated with severity of disability

ASSOCIATION OF ANTI-CYCLIC CITRULLINATED PEPTIDE ANTIBODY IN A SAMPLE OF ADULT PATIENTS WITH PSORIASIS AND PSORIATIC ARTHROPATHY

Objective: Psoriatic arthritis (PsA) is a chronic inflammatory arthropathy commonly associated with psoriasis, a large number of patients with PsA that has persistent inflammation may develop progressive joint damage and disability and have reduced life expectancy. This study aims to determine the associations of anti-cyclic citrullinated peptide (CCP) antibodies in adult patients with psoriasis and PsA.Methods: A case–control study was conducted at Baghdad teaching hospital, Units of Rheumatology and Dermatology, during the period from December 2016 to April 2017 including three groups; 40 patients with psoriasis, 40 patients with PsA fulfilling the CASPAR classification criteria, and 40 healthy control persons.Results: Two patients with psoriasis (5%) and 10 patients with PsA (25%) were seropositive for anti-CCP antibodies (ACPA). Healthy controls were negative for anti-CCPA. Regarding ACPA positivity, a significant difference was found between those three studied groups (p<0.001) and there was a significant difference between positive and negative ACPA in PsA patients regarding disease activity score (p=0.044).Conclusion: Positive ACPA were found more significant with PsA than in patients with psoriasis as well as associated with higher disease activity

Why do people not attend for treatment for trachomatous trichiasis in Ethiopia? A study of barriers to surgery.

BACKGROUND: Trachomatous trichiasis (TT) surgery is provided free or subsidised in most trachoma endemic settings. However, only 18-66% of TT patients attend for surgery. This study analyses barriers to attendance among TT patients in Ethiopia, the country with the highest prevalence of TT in the world. METHODOLOGY/PRINCIPAL FINDINGS: Participants with previously un-operated TT were recruited at 17 surgical outreach campaigns in Amhara Region, Ethiopia. An interview was conducted to ascertain why they had not attended for surgery previously. A trachoma eye examination was performed by an ophthalmologist. 2591 consecutive individuals were interviewed. The most frequently cited barriers to previous attendance for surgery were lack of time (45.3%), financial constraints (42.9%) and lack of an escort (35.5% in females, 19.6% in males). Women were more likely to report a fear of surgery (7.7% vs 3.2%, p<0.001) or be unaware of how to access services (4.5% vs 1.0% p<0.001); men were more frequently asymptomatic (19.6% vs 10.1%, p<0.001). Women were also less likely to have been previously offered TT surgery than men (OR = 0.70, 95%CI 0.53-0.94). CONCLUSIONS/SIGNIFICANCE: The major barriers to accessing surgery from the patients' perspective are the direct and indirect costs of surgery. These can to a large extent be reduced or overcome through the provision of free or low cost surgery at the community level. TRIAL REGISTRATION: ClinicalTrials.gov NCT00522860 and NCT00522912

Mems integrated reconfigurable antenna for cognitive public safety radios

The frequency reconfigurable volumetric PIFA presented in this paper is designed to switch between two US public-safety bands, one operating at 700MHz and the other having a bandwidth of 17% around 850MHz - in effect covering a range from 800MHz to 900MHz. The reconfigurability is limited to only the ground and patch layers as an aim to minimize the number of MEMS switches used. The radiation pattern of the antenna maintains its shape and the maximum gain over this reconfigurable band of operation, 700 – 900 MHPostprint (published version

Absorbable versus silk sutures for surgical treatment of trachomatous trichiasis in Ethiopia: a randomised controlled trial.

BACKGROUND: Trachoma causes blindness through an anatomical abnormality called trichiasis (lashes touching the eye). Trichiasis can recur after corrective surgery. We tested the hypothesis that using absorbable sutures instead of silk sutures might reduce the risk of recurrent disease among patients with major trichiasis in a randomised trial. METHODS AND FINDINGS: 1,300 individuals with major trichiasis from rural villages in the Amhara Region of Ethiopia were recruited and assigned (1:1) by computer-generated randomisation sequence to receive trichiasis surgery using either an absorbable suture (polyglactin-910) or silk sutures (removed at 7-10 days) in an otherwise identical surgical technique. Participants were examined every 6 months for 2 years by clinicians masked to allocation. The primary outcome measure was recurrent trichiasis (≥one lash touching the eye) at 1 year. There was no difference in prevalence of recurrent trichiasis at 1 year (114 [18.2%] in the absorbable suture group versus 120 [19.7%] in the silk suture group; odds ratio = 0.90, 95% CI 0.68-1.20). The two groups also did not differ in terms of corneal opacification, visual acuity, conjunctival inflammation, and surgical complications. CONCLUSIONS: There was no evidence that use of absorbable polyglactin-910 sutures was associated with a lower prevalence of trichiasis recurrence at 1 year postsurgery than silk sutures. However, from a programmatic perspective, polyglactin-910 offers the major advantage that patients do not have to be seen soon after surgery for suture removal. The postoperative review after surgery using absorbable polyglactin-910 sutures can be delayed for 3-6 months, which might allow us to better determine whether a patient needs additional surgery. TRIAL REGISTRATION: ClinicalTrials.gov NCT00522860

Epilation for minor trachomatous trichiasis: four-year results of a randomised controlled trial.

BACKGROUND: Trachomatous trichiasis (TT) needs to be managed to reduce the risk of vision loss. The long-term impact of epilation (a common traditional practice of repeated plucking of lashes touching the eye) in preventing visual impairment and corneal opacity from TT is unknown. We conducted a randomized controlled trial of epilation versus surgery for the management of minor TT (fewer than six lashes touching the eye) in Ethiopia. Here we report the four-year outcome and the effect on vision and corneal opacity. METHODOLOGY/ PRINCIPAL FINDINGS: 1300 individuals with minor TT were recruited and randomly assigned to quality trichiasis surgery or repeated epilation using high quality epilation forceps by a trained person with good near vision. Participants were examined six-monthly for two-years, and then at four-years after randomisation. At two-years all epilation arm participants were offered free surgery. At four-years 1151 (88.5%) were re-examined: 572 (88%) and 579 (89%) from epilation and surgery arms, respectively. At that time, 21.1% of the surgery arm participants had recurrent TT; 189/572 (33%) of the epilation arm had received surgery, while 383 (67%) declined surgery and had continued epilating ("epilation-only"). Among the epilation-only group, 207 (54.1%) fully controlled their TT, 166 (43.3%) had minor TT and 10 (2.6%) had major TT (&gt;5 lashes). There were no differences between participants in the epilation-only, epilation-to-surgery and surgery arm participants in changes in visual acuity and corneal opacity between baseline and four-years. CONCLUSIONS/ SIGNIFICANCE: Most minor TT participants randomised to the epilation arm continued epilating and controlled their TT. Change in vision and corneal opacity was comparable between surgery and epilation-only participants. This suggests that good quality epilation with regular follow-up is a reasonable second-line alternative to surgery for minor TT for individuals who either decline surgery or do not have immediate access to surgical treatment