Integration of Agricultural Commodity Markets in Punjab

Efficiency of resource allocation in agriculture depends on the functioning of commodity markets. Although the larger markets that are better connected with the transport and communication network are expected to be well-integrated, the same cannot be said about the smaller, more remote markets. This paper tests integration of agricultural commodity markets in Southeastern Punjab. The region is located off the main trading axis of Pakistan, the Peshawar-Karachi highway, and is mostly served by relatively small markets known as mandis. This study focuses on markets for cotton, wheat, and rice in five towns in the region. Cotton and wheat are the main crops in the area while rice is mostly grown as part of crop rotation aimed at controlling salinity. The analytical framework developed by Ravallion was used to conduct tests of market integration for the three selected commodities. Within this framework, it is possible to test for short-run integration, long-run integration or complete market segmentation. The results indicate that, generally, markets are integrated only in the long run, with short-run integration limited to some special cases. Moreover, the smaller markets are more likely to be isolated as compared to the larger markets. The small markets also take longer to fully adjust to the price shock originating from a more dominant central market. Finally, in the case of rice, it is more likely that a market would be isolated if it were small. This implies that farmers’ incentives to grow rice as a means of combating salinity may be constrained by local demand conditions.

Can Electronic Media Play Role in Polio Eradication in Pakistan? -secondary analysis of Pakistan Demographic and Health Survey 2012-2013

Objectives: Main objective was to find role of electronic media on received polio vaccine doses (1,2,3,0) in households in all regions of the country. The intention was to compare polio vaccination in households who had exposure to electronic media, TV and radio, with households who had no exposure to electronic media.Materials and Methods: Pakistan Demographic and Health Survey (PDHS) 2012-13, third country wide survey, data was used for the study. In the survey 14,000 households were selected (6,944 in urban areas and 7,056 in rural areas) and there were 12,943 occupied households. From these occupied households, 13,558 ever-married women and 3,134 ever married men age 15–49 were interviewed.  SPSS Multinomial Logistic Regression analyses was used to see statistical significance and to investigate the association between electronic media (radio and TV) and polio vaccine doses (1,2,3,0). A p-value of <0.05 was considered to be statistically significant.Results: Television was more effective than radio in polio vaccination. Children from households who had TV and radio received more polio vaccine doses (1,2,3,0) than children from households who had no TV and radio. Households who had television, had significantly higher polio vaccinated children, vaccination dates on cards and vaccination reported by mothers than those households who had no TV.Rural areas of the country, without radio and TV in households, have more polio unvaccinated children than urban areas. In Balochistan rural areas, households without radio had 37.7% to 76.3% and households without TV had 37.3% to 80.5% polio unvaccinated (1,2,3,0) children which is the highest deprived percentage in the country.Radio and TV were statistically significant and had association with polio vaccine doses (0,1,2,3).Conclusion:Electronic media, TV and radio, has an important role in polio vaccination and can play vital role in polio eradication in Pakistan. Proper designing and delivery of powerful media messages at proper time can create awareness about polio, change behaviour and attitude for polio vaccination

Integration of Agricultural Commodity Markets in Punjab

Efficiency of resource allocation in agriculture depends on the functioning of commodity markets. Although the larger markets that are better connected with the transport and communication network are expected to be well-integrated, the same cannot be said about the smaller, more remote markets. This paper tests integration of agricultural commodity markets in Southeastern Punjab. The region is located off the main trading axis of Pakistan, the Peshawar-Karachi highway, and is mostly served by relatively small markets known as mandis. This study focuses on markets for cotton, wheat, and rice in five towns in the region. Cotton and wheat are the main crops in the area while rice is mostly grown as part of crop rotation aimed at controlling salinity. The analytical framework developed by Ravallion was used to conduct tests of market integration for the three selected commodities. Within this framework, it is possible to test for short-run integration, long-run integration or complete market segmentation. The results indicate that, generally, markets are integrated only in the long run, with short-run integration limited to some special cases. Moreover, the smaller markets are more likely to be isolated as compared to the larger markets. The small markets also take longer to fully adjust to the price shock originating from a more dominant central market. Finally, in the case of rice, it is more likely that a market would be isolated if it were small. This implies that farmers’ incentives to grow rice as a means of combating salinity may be constrained by local demand conditions

Does Early Tracheostomy Improve Outcome in Severe Head Injury?

Object:  To determine if early tracheostomy reduces the duration of mechanical ventilation, Intensive Care Unit (ICU) stay and morbidities associated with it in patients with severe head injury. Methods:  This 5-yr retrospective review included 60 ICU patients with severe traumatic head injury requiring mechanical ventilation and tracheostomy. Early tracheostomy (ET) was defined as tracheostomy within 7 days, and prolonged endotracheal intubation (EI) as endotracheal intubation for more than 7 days. Among 60 patients, 30 underwent early tracheostomy and 30 remained on prolong EI for ventilation. All patients were comparable in term of age and initial Glasgow Coma Scale (GCS). We evaluated groups regarding clinical outcome in terms of ventilator associated pneumonia (VAP), ICU stay and Glasgow Outcome Score (GOS). Results:  The incidence of Ventilator Associated Pneumonia (VAP) was significantly higher in prolonged Endotracheal Intubation EI group, relative to Early tracheostomy ET group (63% vs. 43%, respectively). ET group showed significantly less ventilator days (9 days vs. 12 days), ICU stay (10 days vs. 13 days), complication rate (13% vs. 18%) and mortality (10% vs.25%). Clinical outcome assessed on the basis of Glascow Outcome Score (GOS) was better in ET group. Conclusions:  In severe head injury early tracheostomy decreases total days of ventilation and ICU stay. Tracheostomy is associated with a decrease in the incidence of Ventilator Associated Pneumonia (VAP). Early tracheostomy should be considered in severe head injury patients requiring prolong ventilatory support. &nbsp

Role of neurosurgery in the management of stroke

Stroke is the second leading cause of death worldwide. The aim of treatment in stroke patients is to prevent further neurologic deterioration and prevent recurrence. Despite all advances in medical treatment, morbidity and mortality in stroke patients is still very high. The other alternative is surgical treatment, which still lacks class 1 evidence. However there is recent reconsideration of this form of treatment and ongoing trials are showing some promising results. In this review the recent advances in surgical treatment of stroke will be discussed along with recommendations from the latest randomized trials

A New Weibull-G Family of Distributions

Statistical analysis of lifetime data is an important topic in reliability engineering, biomedical and social sciences and others. We introduce a new generator based on the Weibull random variable called the new Weibull-G family. We study some of its mathematical properties. Its density function can be symmetrical, left-skewed, right-skewed, bathtub and reversed-J shaped, and has increasing, decreasing, bathtub, upside-down bathtub, J, reversed-J and S shaped hazard rates. Some special models are presented. We obtain explicit expressions for the ordinary and incomplete moments, quantile and generating functions, Renyi entropy, order statistics and reliability. Three useful characterizations based on truncated moments are also proposed for the new family. The method of maximum likelihood is used to estimate the model parameters. We illustrate the importance of the family by means of two applications to real data sets

The Kumaraswamy Marshal-Olkin Family of Distributions

We introduce a new family of continuous distributions called the Kumaraswamy Marshal-Olkin generalized family of distributions. We study some mathematical properties of this family. Its density function is symmetrical, left-skewed, right-skewed and reversed-J shaped, and has constant, increasing, decreasing, upside-down bathtub, bathtub and S-shaped hazard rate. We present some special models and investigate the asymptotics and shapes of the family. We derive a power series for the quantile function and obtain explicit expressions for the moments, generating function, mean deviations, two types of entropies and order statistics. Some useful characterizations of the family are also proposed. The method of maximum likelihood is used to estimate the model parameters. We illustrate the importance of the family by means of two applications to real data sets

Primary chiasmal sarcoid granuloma masquerading as glioma of the optic chiasm

A 37-year-old woman presented with a 6 months history of headaches and memory impairment. Examination showed no neurological deficit with normal vision. MRI scans showed an enlarged optic chiasm. There was no dural or leptomeningeal enhancement or hydrocephalus. Open biopsy of the suprasellar mass showed non-caseating chronic granulomatous inflammation compatible with sarcoidosis. Systemic features of sarcoid were absent. Patient showed marked improvement on steroid therapy