Problematic mobile phone consumption among young consumers: policy and research implications

Youth represents a largest segment for both telecom operators and mobile phones manufacturers in Pakistan. However, there is relatively a little research regarding the inappropriate and problematic mobile phone consumption among youth. This paper with the help of extant literature argues that young consumers are generally involved in problematic mobile phone consumption than any other age group. This warrants a thorough research on different aspects of problematic mobile phone consumption patterns among young consumers for better consumer policy making and for their wellbeing. Present article proposes some potential research areas with regards to young mobile phone consumers and provides a few suggestions to protect young consumers from the negative consequences of mobile phone consumption

Are BP readings taken after a patient-physician encounter in a real-world clinic scenario the lowest of all the readings in a clinic visit.

Objective: To determine the difference in Blood Pressure (BP) readings taken before, during and after the clinic encounter. Study Design: Descriptive study. Place and Duration of Study: Cardiology Clinic, The Aga Khan University Hospital, Karachi, from January to August 2013. Methodology: Hypertensive and normotensive participants aged ≥ 18 years were recruited. Pre-clinic BP was measured by a nurse and in-clinic BP by a physician. After 15 minutes, two post-clinic BP readings were taken at 1 minute interval. All readings were taken using Omron HEM7221-E. Results: Out of 180 participants, males were 57% and 130 (71%) were hypertensive. Mean SBP (Systolic BP) taken preclinic, in-clinic, post-clinic 1 and post-clinic 2 were: 126 ± 20 mmHg, 131 ± 23 mmHg, 126 ± 20 mmHg and 121 ± 21 mmHg respectively (p \u3c 0.001). Mean DBP (Diastolic BP) taken pre-clinic, in-clinic, post-clinic 1 and post-clinic 2 were 77 ± 12 mmHg, 81 ± 13 mmHg, 79 ± 12 mmHg and 79 ± 11 mmHg respectively (p \u3c 0.001). Conclusion: BP taken in the post-clinic setting may significantly be the lowest reading in a clinic encounter, making in-clinic BP unreliable to diagnose or manage hypertension

Defining the hemodynamic response of hypertensive and normotensive subjects through serial timed blood pressure readings in the clinic

Background: Every third patient in the clinic is misdiagnosed due to white-coat phenomenon, necessitating needless and costly treatment. We aimed to study the hemodynamic response of the physician\u27s visit on hypertensive and normotensive patients by investigating the trend of blood pressure (BP) before, during and 15 min after the physician-patient encounter.Methods: A descriptive, cross-sectional study was conducted over a period of 8 months in the cardiology clinics at the Aga Khan University Hospital, Karachi. Both hypertensive and normotensive patients, aged ≥18 years, were recruited. Pregnant females or those with a history of volume loss were excluded. BP readings were taken using an automated, validated device (Omron-HEM7221-E) at three points: pre-clinic BP by the assessment nurse, in-clinic BP by the attending physician and post-clinic BP 15-min after the physician-patient encounter by a research assistant. Independent samples t-test was used to calculate the statistical difference between hypertensive and normotensive BP values.Results: Of 180 participants, 71% (n = 128) were hypertensive and 57% (n = 103) of all were males. The mean age of the participants was 57 ± 15 years. The mean and standard deviation(±SD) systolic BP (SBP) taken pre-clinic, in-clinic and 15-min post-clinic for hypertensive population was 128.7 ± 20 mmHg, 137.1 ± 21 mmHg and 127.9 ± 19 mmHg. The mean and standard deviation(±SD) SBP taken pre-clinic, in-clinic and 15 min post-clinic for normotensive population was 112 ± 16 mmHg, 115.8 ± 20 mmHg and 111.8 ± 15 mmHg. The hypertensive SBP values showed statistically significant difference from the normotensive values (difference in pre-clinic SBP: 16.7 mmHg, p-value \u3c 0.001; in-clinic SBP: 21.3 mmHg, p-value \u3c 0.001; and 15 min post-clinic: 16.1 mmHg, p-value \u3c 0.001).Conclusions: Hypertensive and normotensive patients display congruent hemodynamics upon visiting the physician, the alert response being accentuated amongst the hypertensive group. In-clinic BP readings are higher for both hypertensive and normotensive patients making them unreliable for screening and management of hypertension amongst both the groups

Effect of Casting Technique on the Compressive Behaviour of Fully Recycled Aggregate Concrete

The research work presented in this contribution investigated the impact of Compression Casting Technique (CCT) on the compressive behavior of fully Recycled Aggregates Concrete (RAC). RAC mix containing 30% fine aggregates, 70% coarse aggregates and 15% cement by weight of total aggregates was prepared under two different casting pressures (i.e., 25 & 35 MPa). For the purpose of comparison, Natural Aggregate Concrete (NAC) mix was also prepared under same casting pressures. Samples of RAC mix were also made by compaction through vibration. Recycled concrete aggregates required for this study were prepared by crushing of damaged concrete samples having compressive strength in the range of 21 to 28 MPa. Compressive response was evaluated in terms of compressive strength and modulus of elasticity (MOE). Ultrasonic pulse velocity test was employed to check the quality of internal matrix of concrete samples prepared by CCT and vibration. The results demonstrated positive effect of CCT on the properties of concrete resulting in higher compressive strength and MOE compared to properties of concrete prepared by compaction through vibration. With the increase in casting pressure from 25 to 35 MPa, compressive strength and MOE of RAC was increased by 21% and 29%, respectively. It was found that RAC mix exhibited inferior properties (i.e., compressive strength and MOE) compared with NAC mix

Effect of yeast supplementation on production parameters, egg quality characteristics and crude protein digestibility in hens

Background: Yeast (Saccharomyces cerevisiae) has a buffering effect in the digestive tract, and proper feed additives in chicken diets can improve the birds’ digestive efficiency. The present study planned with aim to investigate the effects of different levels of yeast supplementation on the egg production, egg quality traits and crude protein digestibility in hens.Methods: A total of 84 hens (40 weeks of age) were fed the dietary treatments until 50 weeks of age. The hens were distributed into 4 treatments and 3 replicates with 7 hens per experimental unit. The yeast was incorporated into basal feed with various levels (0, 0.1, 0.15 and 0.2%). The production data was obtained during trial. For determining egg quality characteristics, 30 eggs from each treatment group were used at 14-day interval of the experiment from a 2-day collection of eggs during the week. The excreta from each replicate were collected after every 2 weeks for determining the crude protein digestibility.Results: Maximum egg production and egg mass were attained from the hens provided 0.15% and 0.20% yeast supplementation. The eggshell thickness decreased with supplementation of yeast. Higher yolk weight, albumen weight, Haugh unit and grading values were observed at 0.2% level than other groups. Crude protein digestibility also improved at high levels of yeast supplementation at all ages.Conclusion: This study envisaged that yeast supplementation between 0.15 and 0.20% could be sufficient during 40 to 50 weeks of age, to augment the overall layer performance. Keywords: Baker’s yeast; feed intake; egg production; egg qualit

MRI features of spinal fluorosis: Results of an endemic community screening

Objectives: Fluorosis is endemic in many parts of the world. However community studies on MRI features of fluorosis are lacking. The aim of this study was to determine MRI features of spinal changes in a community with endemic fluorosis in the Thar Desert Pakistan.Methodology: Randomly selected adults from the Village Samorindh, district Tharparker, Sindh, Pakistan, with spinal fluorosis diagnosed on plain x-rays and raised serum fluoride levels were studied from June 2008 to January 2009. MRI was carried out on 0.5 T open magnet MRI system. Features of vertebral body, spinal ligaments, intervertebral disc, facet joints, iliac wings and other incidental findings were noted. Sclerosis was defined as low signal intensity on both T1 and T2 weighted images. RESULTS were described as mean and percentage values.Results: All the studied 27 subjects complained of back ache without neurological signs. The average age was 43.33 ± 10.45 years; 21 being male (77.8%). The most frequent findings included generalized vertebral sclerosis (24, 88.8%), ligamentum flavum hypertrophy (23, 85%), anterior (20, 74%) and lateral (17, 62.9%) disc herniation, thickened longitudinal ligaments, and narrowing of spinal foramina. Hemangioma was seen in 04(14.8%). The most commonly involved level was L1-2, L4-5 and lower dorsal spine.Conclusion: Vertebral sclerosis, a combination of premature degeneration with anterior disc herniation and an unusually high frequency of vertebral hemangioma formed the spectrum of MRI findings in subjects with spinal fluorosis having back ache but no neurological findings

Terminalia arjuna restores the levels of alkaline phosphatase and aspartate aminotransferase of acetaminophen intoxicated mice

Background: Herbal medicines are natural and comparatively safer than conventional treatments and are well-documented for carrying little potential for harm.  Therefore, phytonutrients have occupied a central stage in the therapeutics. Terminalia arjuna, a medicinal plant, has been reported to have homeostatic, laxative, diuretic, antidiabetic, anticancer and cardiotonic actions.Methods: The current study was designed to investigate the protective role of T. arjuna leaf extract at three dose levels (100, 250, 500 mg/kg body weight) against acetaminophen (250 mg/kg body weight) induced liver damage.Results: The administration of hepatotoxin (Acetaminophen) resulted in disturbance of hematological and serological profile including alkaline phosphatase (ALP) and aspartate aminotransferase (AST) which was assayed in control and drug treated experimental models. Treatment with T.  arjuna leaf extract for 7 days restored the normal levels of markers and response was dose dependent.Conclusion: This study adds to the very limited existing literature regarding hepatoprotective effect of T. arjuna against acetaminophen toxicity. It is also important to get a step closer to development of accessible, authoritative, and independent information resources about herbal medicines and wide-ranging health disorders, which are currently lacking in Pakistan.Keywords: Hepatoprotective; Terminalia arjuna; ALP; AST   

The role of quality health services and discussion about birth spacing in postpartum contraceptive use in Sindh, Pakistan: A multilevel analysis

Introduction: Rapid population growth, stagnant contraceptive prevalence, and high unmet need for family planning present significant challenges for meeting Pakistan\u27s national and international development goals. Although health behaviors are shaped by multiple social and environmental factors, research on contraceptive uptake in Pakistan has focused on individual and household determinants, and little attention has been given to community characteristics that may affect access to services and reproductive behavior.Methods: Individual and community determinants of contraceptive use were identified using multivariable multilevel logistic regression to analyze data from a 2014 cross-sectional survey of 6,200 mothers in 503 communities in Sindh, Pakistan.Results: Only 27% of women who had given birth in the two years before the study reported using contraceptives. After adjusting for individual and community characteristics, there was no difference in the odds of contraceptive use between urban and rural women. Women who had delivered at a health facility had 1.4 times higher odds of contraceptive use than women who delivered at home. Those who received information about birth spacing from a doctor or relatives/friends had 1.81 and 1.38 times higher odds of contraceptive use, respectively, than those who did not. Living in a community where a higher proportion of women received quality antenatal care and where discussion of birth spacing was more common was significantly associated with contraceptive use. Community-wide poverty lowered contraceptive use.Conclusions: Quality of care at the community level has strong effects on contraceptive use, independent of the characteristics of individual households or women. These findings suggest that powerful gains in contraceptive use may be realized by improving the quality of antenatal care in Pakistan. Community health workers should focus on generating discussion of birth spacing in the community. Outreach efforts should target communities where the demand for contraception appears to be depressed due to high levels of poverty

Deep Neural Networks based Meta-Learning for Network Intrusion Detection

The digitization of different components of industry and inter-connectivity among indigenous networks have increased the risk of network attacks. Designing an intrusion detection system to ensure security of the industrial ecosystem is difficult as network traffic encompasses various attack types, including new and evolving ones with minor changes. The data used to construct a predictive model for computer networks has a skewed class distribution and limited representation of attack types, which differ from real network traffic. These limitations result in dataset shift, negatively impacting the machine learning models' predictive abilities and reducing the detection rate against novel attacks. To address the challenges, we propose a novel deep neural network based Meta-Learning framework; INformation FUsion and Stacking Ensemble (INFUSE) for network intrusion detection. First, a hybrid feature space is created by integrating decision and feature spaces. Five different classifiers are utilized to generate a pool of decision spaces. The feature space is then enriched through a deep sparse autoencoder that learns the semantic relationships between attacks. Finally, the deep Meta-Learner acts as an ensemble combiner to analyze the hybrid feature space and make a final decision. Our evaluation on stringent benchmark datasets and comparison to existing techniques showed the effectiveness of INFUSE with an F-Score of 0.91, Accuracy of 91.6%, and Recall of 0.94 on the Test+ dataset, and an F-Score of 0.91, Accuracy of 85.6%, and Recall of 0.87 on the stringent Test-21 dataset. These promising results indicate the strong generalization capability and the potential to detect network attacks.Comment: Pages: 15, Figures: 10 and Tables:

Frequency of Peri-operative Hypertension in a tertiary care hospital in Karachi, Pakistan

This study aims to determine the frequency of perioperative hypertension and its types (pre, intra and post-operative) hypertension in patients admitted for surgical procedures. This was a cross-sectional study conducted between the years 2012-2013 at the Aga Khan University Hospital, Karachi. Patients admitted for any surgical procedure during this time were included. Perioperative hypertension has been defined as systolic blood pressure of \u3e140 mm Hg or a diastolic blood pressure of \u3e90 mm Hg or whose blood pressure increased by 20% during surgery. A total of 428 surgical procedures were reviewed for the study. Overall perioperative hypertension was present in 231 (54%) of the patients. In the sample, 91 (21.7%) had pre-operative hypertension, 126(29.4%) reported pre-surgery hypertension, 24(5.6%) had intra-operative hypertension and 63(14.7%) had post-operative hypertension. Mean pain score was 1.43(1.4) v 1.25(1.2) in those with postoperative hypertension v no post-operative hypertension