The Chi-Square Test of Significance

2001 ◽  
pp. 307-320
Author(s):  
B. Roy Frieden
Keyword(s):  
Chi Square ◽  
Chi Square Test ◽  
Test Of Significance

scholarly journals DETERMINANTS OF INCOME SECURITY AMONG PENSIONABLE RETIRED PERSONS IN KENYA

2020 ◽  
Vol 11 (1) ◽  
pp. 24-34
Author(s):  
Lucy Maina ◽  
Elishiba Kimani
Keyword(s):  
Logistic Regression ◽  
Binary Logistic Regression ◽  
Binary Logistic Regression Analysis ◽  
Retirement Savings ◽  
Chi Square ◽  
Income Security ◽  
Financial Status ◽  
Chi Square Test ◽  
Test Of Significance ◽  
Logistic Regression Procedure

Retirees’ income security constitutes a key concern for nations aiming to secure their ageing populations. Kenya has a growing retirement sector with about 252,000 retired civil servants who are on pension and a significant number of private sector retirees who receive a gratuity at retirement. Though formally retired workers may receive a pension, studies consistently report low pensions uptake and inadequate incomes for those retired as well as an increasing national and societal burden. This paper explores the key determinants of income security among 978retired persons who were receiving dues on their retirement savings. Guided by the life cycle and third age theory, the study investigated whether retirees’ socio-economic attributes, pre-retirement financial status, retirees’ benefit package, retirees’ utilization of retirement savings and investments and pre-retirement preparation correlated with income security. A mixed-method study design was used combining survey and case study approaches. Cluster, purposive and random sampling methods were employed to select retirees under the four categories of retirement schemes in Kenya across 18 selected counties of Kenya. Hypotheses were tested using the Chi square test of significance and comparison of means (t-test) specifically to illustrate the relationship between socio-economic indicators, pre-retirement factors and income security at retirement. Logistic regression procedure was employed to isolate the significant factors that predict income security in retirement. The binary logistic regression analysis confirm that retirees with higher education had 26% higher chances of enjoying income security, those who earned higher pre-retirement salary had 25% higher chances of having a secure income at retirement, those knowledgeable about pensions had 35% higher chances of being income secure while those who had planned for their retirement had 14% higher chances of achieving income security. The study recommends crafting of a robust retirement planning package, financial and health plans for retirees’ income security and sustainable livelihoods.

scholarly journals Diagnostic evaluation of causes of bleeding per vagina in pregnancy through ultrasonography

2019 ◽  
Vol 8 (4) ◽  
pp. 1369
Author(s):  
Sumathy K. K.
Keyword(s):  
Vaginal Bleeding ◽  
First Trimester ◽  
Diagnostic Process ◽  
Chi Square ◽  
Emergency Ultrasonography ◽  
Chi Square Test ◽  
Life Threatening ◽  
Abruptio Placenta ◽  
Test Of Significance ◽  
General Physical

Background: Vaginal bleeding is a common obstetric situation ranging from an insignificant episode to life threatening emergency. Ultrasonography is playing an increasing role in the diagnostic process. The objective of present study was to evaluate the uses of ultrasound as new diagnostic aid for patients of bleeding PV in pregnancy.Methods: A hospital-based prospective study was conducted among 100 pregnant patients who have the problem of bleeding. A complete general physical and pelvic examination was done, and patients were then subjected to ultrasound examination. Epi info 7 software was used for statistical analysis. Chi- square test was used as the test of significance. P<0.05 is considered statistically significant.Results: Among these 100 cases, Incomplete abortion was the commonest cause of bleeding. This was observed in 15 cases (27%). There were 8 (20%) cases of complete abortion in the present study in the scan done on <20 weeks. Abruptio placenta was seen in 10 (25%) cases as the most common cause in the scan after 20 weeks.Conclusions: Ultrasound is a valuable tool in the differentiation of causes of first trimester vaginal bleeding. Ultrasound is helpful in the decision-making algorithm about the safe continuation of the pregnancy, timely intervention for abnormal pregnancy.

Occurrence of Mycobacterium bovis infection in cattle in Kaduna metropolis and its environs

2020 ◽  
Vol 47 (1) ◽  
pp. 58-64
Author(s):  
A. T. Tinau ◽  
I. K. Alhabib ◽  
A. G. Bala ◽  
B. Usman
Keyword(s):  
Mycobacterium Bovis ◽  
Production Systems ◽  
Tuberculin Test ◽  
Dairy Herds ◽  
Chi Square ◽  
Milk Samples ◽  
Tuberculin Reaction ◽  
Chi Square Test ◽  
Test Of Significance ◽  
Tuberculin Tests

The tedious nature of tuberculin tests in Nigeria, warrants the need for an alternative rapid animal-side means of diagnosis. The aim of this study was to provide information on the epidemiology of Mycobacterium bovis infection in cattle. An experiment was conducted to evaluate the occurrence of M. bovis infection in cattle in Kaduna metropolis and it's environ. A total 239 heads of cattle from 8 herds were randomly selected and tuberculin tested, two herds being from each of the four local government areas involved and pooled milk samples from the eight herds were tested for acid fastness. Also, all heads of cattle totaling 2978 slaughtered at the 2 abattoirs during the month of May, 2012 were examined at postmortem and tissues with lesions compatible with lesions of were collected and tested for acid fastness. The results of the experiment showed that only 23 (9.6%) of the animals tested were classified as reactors and these came from only one of the eight herds studied. A clear swelling was seen in each of the positive cases. Out of the eight herds tested, 6 (75%) were settled and the remaining 2 (25%) were semi- settled. Similarly, 6 (75%) of the herds were for mixed production system and 2(25%) were kept solely as dairy herds. Positive tuberculin test was only observed from among one of the six settled herds 1(17%) while cattle in the remaining 5(83%} settled herds all tested negative. All the two semi-settled herds (100%) tested negative. The tuberculin reaction among different production systems showed that only 1 (50%) of the dairy herds tested positive and all the 6 (100%) mixed herds tested negative. Atuberculin positive reaction of 19 (7.9%) was observed among the females and 4 (1.67%) among the males. The chi-square test of significance between the tuberculin reaction and sex of the animals showed no significant effect (P > 0.05). Hence, it can be concluded that, Mycobacterium bovis was neither cultured nor isolated and therefore, could not be confirmed responsible for the observed reactions. However, its involvement is strongly suggested by both its higher values compared to those for Mycobacterium avium in the single intradermal comparative tuberculin test and the observed in the stained smears of both the milk samples collected and the bovine tissues from the abattoirs.

scholarly journals Closure of skin in surgical wounds with skin stapler and conventional sutures: a comparative study

2021 ◽  
Vol 9 (1) ◽  
pp. 66
Author(s):  
Pinky Rabha ◽  
Shradha Srinivas ◽  
K. Bhuyan
Keyword(s):  
Comparative Study ◽  
Skin Closure ◽  
Aesthetic Outcome ◽  
Chi Square ◽  
Surgical Wounds ◽  
Operative Complications ◽  
Chi Square Test ◽  
Test Of Significance ◽  
Time Required ◽  
Post Operative Complications

Background: Application of suture is the technique of choice for apposition of skin edges in surgical wounds. The same procedure performed with application of staplers is faster and produce better cosmetic outcomes. A comparative study between conventional suture and stapler closure of skin in abdominal surgical wounds was undertaken to study the merits and demerits of the techniques. The aim was to study the time required for closure of surgical wounds, aesthetic outcome, post-operative complications and patient’s compliance.Methods: This was a single centre, prospective, observational study, conducted upon 100 patients undergoing abdominal surgeries. 50 patients were selected for skin closure of surgical wounds with stapler and the other 50 patients for closure with conventional nylon sutures. Data were collected for time required for closure of skin, aesthetic outcome, post-operative complications and patient’s compliance for both the groups for comparison. Data were analysed using student t test for comparison and chi square test of significance. Results: There was significant better results in stapler group in terms of cosmetic outcome (96% vs 88%, p<0.001), time taken during closure (60 vs 219 seconds, p<0.001) and patient’s compliance VAS of 1.44 vs 4.58 p<0.001).Conclusions: Closure of skin with stapler is a faster method. Patient’s compliance with stapler closure is better. It produces cosmetically acceptable scar and less discomfort or pain during its removal.

scholarly journals Comparing the effect of Placebo and Prophylactic Antibiotics on asymptomatic Necrotic teeth.

2019 ◽  
Vol 26 (12) ◽  
pp. 2162-2168
Author(s):  
Muhammad Qasim ◽  
Omair Anjum ◽  
Omer Yousaf ◽  
Shoaib Khan ◽  
Madiha Pirvani
Keyword(s):  
Root Canal ◽  
Root Canal Treatment ◽  
Control Group ◽  
P Value ◽  
Chi Square ◽  
Operative Dentistry ◽  
Quasi Experimental ◽  
Chi Square Test ◽  
Test Of Significance ◽  
And Control

Objectives: Treatment of asymptomatic necrotic teeth is a common type of occurrence in endodontic practice. Root canal treatment of these teeth sometimes results in pain and /or swelling of varying degree. These severe symptoms upset both the patient and dentist. This study was to compare the effect of prophylactic amoxicillin and placebo in endodontic flare-up in asymptomatic necrotic teeth requiring root canal treatment. This was evaluated by using flare-up index. The influence of age, sex, was compared between flare-up and non-flare-up groups. Using a standardized technique and the same materials eliminated the variability of operator. Study Design: Quasi experimental study. Setting: Department of Operative Dentistry, Lahore Medical and Dental College, Lahore. Period: From January 2018 to December 2018. Material & Methods: 102 patients with asymptomatic necrotic teeth with periapical radiolucency were selected from the Operative Dentistry Department of Lahore Medical and Dental College. Patients were divided into two groups experimental and control, by convenient sampling. One half of the patients were given prophylactic amoxicillin and other half was given placebo one hour before treatment. Results: Flare-up occurred in four of the experimental and seven of the control group patients. Statistical analysis revealed no significant differences between flare-up and non- flare- up patients for age and sex. The data outcome was of qualitative in nature i.e. pain and swelling, they were subjected to Chi-Square test of significance with P value of £0.05. The results demonstrated that 10.8% of the 102 patients had a flare-up. No side effects were observed in the patients who were prescribed amoxicillin. Conclusion: The occurrence of flare-up did not significantly influence by Prophylactic amoxicillin (P= .33).

scholarly journals The Role of Co-curricular Activities in Leadership Skills' Development among University Students

2021 ◽  
Vol 1 (2) ◽  
pp. 38-52
Author(s):  
Nisar Yousaf Zada ◽  
Dr. Alamzeb
Keyword(s):  
University Students ◽  
Undergraduate Students ◽  
Leadership Skills ◽  
Skills Development ◽  
Chi Square ◽  
Equal Importance ◽  
Chi Square Test ◽  
Test Of Significance ◽  
The University

Education aims at the balanced personality growth of individuals and offers both curricular and co-curricular activities to realize this goal. Talking about the importance of co-curricular activities in mind, the study investigated the function of co-curricular activities in leadership skills' growth among university students. The research aimed to figure out co-curricular activities among university students, examine the connection between co-curricular activities and students' leadership skills' growth, and establish techniques for co-curricular activities at the university levels. The sample of the research was all 4523 undergraduate students from 06 faculties of the University of Swat. The researchers randomly selected 60 participants for the analysis, created a questionnaire, and validated it by piloting data collection. The data were obtained with self-administered questionnaires and evaluated with frequencies, percentages, and Chi-square test of significance. The study established the strategies of giving equal importance to co-curricular activities, motivation of students for involvement in co-curricular activities, proper scheduling for co-curricular activities, allocation of sufficient financial resources, provision of playgrounds, gymnasiums for arranging indoor, outdoor games and literary activities, and reinforcement of students' contribution in co-curricular activities with a distribution of prizes.  

scholarly journals Patronage as a Determinant of Rental Values of Shopping Malls: A Case of Ibadan, Nigeria

2020 ◽  
Vol 8 (5) ◽  
pp. 957-962
Keyword(s):  
Shopping Malls ◽  
Economic Returns ◽  
Cross Sectional Survey ◽  
Chi Square ◽  
Cross Sectional ◽  
The World ◽  
Traditional Market ◽  
Chi Square Test ◽  
Test Of Significance ◽  
Ibadan Nigeria

The proliferation of shopping malls in virtually all economics of the world both that of the developed and developing ones can be linked to its patronage. This patronage which is gradually causing the loss of grip of the traditional market setting has been studied in line with gender, age, income, location, the image of the malls and type of shoppers amongst others. Due to the modern outfit and patronage, tenants of the malls have to be prepared for its rental payments. However, no study has specifically linked the patronage of malls with such. Therefore to achieve this aim two shopping malls located virtually in the same place were studied; the cocoa mall and heritage mall Ibadan. The study which is a cross-sectional survey entailed the distribution of copies of questionnaires to the tenants, interview with the manager of the malls and observation of frequency of shoppers to the malls. Data obtained were analyzed using the Chi-Square test of significance at 95% confidence level and it was revealed that the patronage of the malls is associated with its rental values. The researchers hereby opine that since it appears that much patronage tends to increase rental values of malls, managers are encouraged to ensure that they enhance their patronage to enjoy a marginal increase in rental payment. This will also be beneficial to tenants going by the enhanced economic returns evident in a higher occupancy rate.

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