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Mohamad Adam Bujang
Sarawak General Hospital
StatisticsSample size determinationPopulationDiabetes mellitusMedicine
39Publications
10H-index
296Citations
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Publications 34
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#1Mohamad Adam Bujang (Sarawak General Hospital)H-Index: 10
#2P X Kuan (Sarawak General Hospital)
Last. Ramli Musa (IIUI: International Islamic University, Islamabad)H-Index: 7
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Introduction: Clinical parameters especially co-morbidities among end stage renal disease (ESRD) patients are associated with mortality. This study aims to determine the risk factors that are associated with mortality within three years among prevalent patients with ESRD. Methods: This is a cohort study where prevalent ESRD patients' details were recorded between May 2012 and October 2012. Their records were matched with national death record at the end of year 2015 to identify the deceased pati...
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#1Bik Liang Lau (Sarawak General Hospital)
#2Mohd Iryan Che Othman (Sarawak General Hospital)
Last. Albert Sii Hieng Wong (Sarawak General Hospital)H-Index: 1
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Background Replacing the skull defect with synthetic materials for hyperostotic bone secondary to meningioma is recommended owing to the possibility of tumor invasion. In our institution, neurosurgeons have been putting back the refashioned hyperostotic bone flap after meningioma excision because of budget constraints. The aim of this study was to review the long-term meningioma recurrence rate in these patients. Methods This was a nonrandomized, prospective observational study conducted from Se...
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Despite new comprehensive approach in diabetes care, type 1 diabetes is still facing considerable premature mortality. This study aims to examine associated risk factors for all-cause mortality among prevalent patients with type 1 diabetes mellitus (T1DM) within 5 years’ period and subsequently develop a logistic regression model to predict the outcome. This was a cohort study where prevalent patients diagnosed with T1DM were notified in a national diabetes registry. Patients’ particulars were r...
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#1Mohamad Adam BujangH-Index: 10
Last. Evi Diana OmarH-Index: 1
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Background: This study aimed to investigate the potential contribution of invalid skewed responses to invalid factor solution in the result from exploratory factor analysis. In the present study, ‘the invalid skewed response’ is defined as when majority of respondents consistently rate only at one side which will eventually change the real or valid pattern of overall responses. Methods: A validation approach was conducted using a secondary data from a questionnaire validation study of an eight...
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Background: Reliability studies are commonly used in questionnaire development studies and questionnaire validation studies. This study reviews the sample size guideline for Cronbach's alpha test. Methods: Manual sample size calculation using Microsoft Excel software and sample size tables were tabulated based on a single coefficient alpha and the comparison of two coefficients alpha. Results: For a single coefficient alpha test, the approach by assuming the Cronbach's alpha coefficient equals t...
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#1Mohamad Adam Bujang (Sarawak General Hospital)H-Index: 10
#2Pei Xuan Kuan (Sarawak General Hospital)H-Index: 1
Last. Abd Muneer Abd HamidH-Index: 1
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Aims. This study aims to determine the all-cause mortality and the associated risk factors for all-cause mortality among the prevalent type 2 diabetes mellitus (T2DM) patients within five years’ period and to develop a screening tool to determine high-risk patients. Methods. This is a cohort study of T2DM patients in the national diabetes registry, Malaysia. Patients’ particulars were derived from the database between 1st January 2009 and 31st December 2009. Their records were matched with the n...
1 CitationsSource
: Runs test is a statistical procedure which determines whether a sequence of data within a given distribution have been derived with a random process or not. It may be applied to test the randomness of data in a survey that collect data from an ordered population. This article illustrates on method to perform a runs test and explains the rationale for performing it by providing some examples of how this test can be applied. The aim of this article was to describe on ways to use the runs test in...
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Background: Different study designs and population size may require different sample size for logistic regression. This study aims to propose sample size guidelines for logistic regression based on observational studies with large population. Methods: We estimated the minimum sample size required based on evaluation from real clinical data to evaluate the accuracy between statistics derived and the actual parameters. Nagelkerke r-squared and coefficients derived were compared with their respecti...
3 CitationsSource
#1Hian Yan Voon (Sarawak General Hospital)H-Index: 3
#2Haris Njoo Suharjono (Sarawak General Hospital)H-Index: 2
Last. Mohamad Adam Bujang (Sarawak General Hospital)H-Index: 10
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Abstract Objective Postpartum hemorrhage remains the leading cause of maternal mortality in developing countries and a significant proportion of these cases are attributable to uterine atony. In contrast to the advances made in the treatment of postpartum hemorrhage, there has been few novel prophylactic agents. This study was undertaken to analyze the effectiveness of carbetocin compared to oxytocin for the prevention of postpartum hemorrhage, in the context of cesarean deliveries. Materials an...
2 CitationsSource
#1Hian Yan VoonH-Index: 3
#2Asrul Akmal ShafieH-Index: 23
Last. Haris Njoo Suharjono (Sarawak General Hospital)H-Index: 2
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Aim To evaluate the cost effectiveness of carbetocin compared to oxytocin when used as prophylaxis against post-partum hemorrhage (PPH) during cesarean deliveries. Methods A systematic review of the literature was performed to identify randomized controlled trials that compared the use of carbetocin to oxytocin in the context of cesarean deliveries. Cost effectiveness analysis was then performed using secondary data from the perspective of a maternity unit within the Malaysian Ministry of Health...
3 CitationsSource
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