In farming and related fields, numerous connections exist that should be distinguished quantitatively. Several factors affect the various crop yields in different dimensions. These factors may have relation with farmer’s practices or with quality of soil. In this study, our main focus is to explore the effect of soil and other factors on the wheat yield. Regression modeling plays an important role in the identification of such factors that greatly affect the crops yield. For reliable and valid results, one has to check the data for outliers and other critical results. In this study, we have fitted the regression models with and without satisfying some regression assumptions to determine the factors affecting yield of wheat. For analysis purposes, the required data were collected from the district Multan. It was observed that when the regression assumptions were satisfied, then coefficient of determination (R2) was improved from 45% to 48%, R2 (adjusted) was improved from 40% to 46%, and the standard error of the estimates was reduced from 2.772 to 2.649. These results indicate that the soil characteristics, such as saturation, electrical conductivity, organic matter, phosphorus, potassium, calcium carbonate, and micronutrients (zinc, copper, iron, manganese, and boron), are the significant factors for wheat yield. While among all other factors, urea, chemical coating of seed, use of compost, and previously sown crops are the significant factors for wheat yield.

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Aim: To determine the frequency of causes of intestinal obstruction among children. Study design: This is a cross sectional study. Place and duration of study: This study was conducted in Allama Iqbal Memorial Teaching Hospital Sialkot. Study was completed in six months duration from January 2022 to June 2022. Methodology: Children with age <12 years admitted in the department of pediatrics and undergoing exploratory laparotomy for intestinal obstruction and fulfilling inclusion criteria were included in this study. On exploratory laparotomy causes of intestinal obstruction were noted like adhesions, intussusceptions, round worms and obstructed hernia. Collected data was analyzed using SPSS version 20 software. Percentages, means and standard deviations were determined. Results: Total 170 cases were studied including 107(62.9%) males and 63(37.1%) females. Range of the ages was one month to 12 years with mean age of 4.37±2.6 years. Most common cause of intestinal; obstruction was adhesions followed by intussusception found in 71(41.7%) and 55(32.3%) cases respectively. Conclusion: Frequency of etiological causes of intestinal obstruction varies in different age groups in children, however adhesions are most common cause of intestinal obstruction in children, while intussusception is second most common cause. Key words: Intestinal obstruction, Adhesion, Intussusception, Etiological causes, Children