J. O. Braimah

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Research Article Vol. 36, Issue 1

Monitoring CSM in Northern Nigeria: A Logistic and OLS Regression Approach

S. O. Elakhe, Rofiyat Patience Braimah, d I. W. Edokpa, J. O. Braimah^*

Cerebrospinal meningitis (CSM) remains a major public health challenge in sub-Saharan Africa. This study analyzed records of 390 suspected CSM patients (2020–2023) from Aminu Kano Teaching Hospital, Nigeria, using sex, age, and month as explanatory variables. Logistic regression and ordinary least square (OLS) models were fitted to identify epidemi...

DOI: 10.67897/njma.2026.7uel8ksq

Jun, 2026 Vol. 36, Issue 1 18 views 6 downloads

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Research Article Vol. 32, Issue 1

An Optimization of Inventory in Retrospect of the Directorate of Physical Planning in Ambrose Alli University Ekpoma, Edo State

E. Egbon^*, F. M. Okoro, J. O. Braimah

This study proposes a mathematical model for the Directorate of Physical Planning’s inventory materials at Ambrose Alli University in Ekpoma, Edo State. To minimize the total cost for the year 2015, the study uses the linear programming solver (MATLAB’s linprog solver). To give the most efficient inventory among the products purchased, as well as t...

DOI: 10.67897/njma.2022.9b6frnnz

Jun, 2022 Vol. 32, Issue 1 13 views 6 downloads

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Research Article Vol. 31, Issue 1

A Bootstrap Approach to Cumulative Sum (CUSUM) and Exponentially Weighted Moving Average (EWMA) Control Charts for Monitoring Process Means

J. O. Braimah^*, S. A. Omotoso, O. Ikpotokin, E. M. Ogbeide

This research proposed a bootstrapped method for setting control boundaries and detecting out-of-control signals. The proposed approaches for determining control limits are designed to address the issues of distributional assumptions and out-of-control signal detection. It enables the setting of control limits, which can improve the detection of th...

DOI: 10.67897/njma.2021.e35txbt7

Jul, 2021 Vol. 31, Issue 1 10 views 4 downloads

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Research Article Vol. 29, Issue 2

On the Performance Assessment of Mean Methods in Estimating Process Capability for Skewed Distributions

J. O. Braimah^*, S. O. Elakhe, N. Edike

This study compares the performances of Gini Mean, Clementsand Box-Cox transformation methods for estimating processcapability Indices when the distribution of the process data is(skewed) non-normal. The use of process performance index(PPI) is implored for process capability analysis (PCA) usingWeibull distribution. Data was simulated using R soft...

DOI: 10.67897/njma.2019.uv8ct7po

Dec, 2019 Vol. 29, Issue 2 6 views 5 downloads

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Research Article Vol. 29, Issue 2

On the Logistic Regression of Prevalence of Malaria Fever with Complications

P. E. Omaku^*, S. I. Jerome

Logistic regression is used to evaluate the e ect of Malariacomplicated by Typhoid, Hypertension and HIV on covariatesAge and sex. Three sets of models were fitted with regards tothe complications. Results indicate that the e ect of sex for allcomplications were not significant, when Malaria is complicatedwith Typhoid; age was significant for patie...

DOI: 10.67897/njma.2019.rv8yr82w

Dec, 2019 Vol. 29, Issue 2 6 views 4 downloads

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Research Article Vol. 28, Issue 1

A Truncated Acceptance Sampling Inspection Plans for Finite and Infinite Lot Under Rayleigh Distribution

J. O. Braimah^*, d I. W. Edokpa

In this paper, single and double acceptance sampling plans were developed when the product life time follows a Rayleigh Distri bution. The sample size (n) and Average Sample Number (ASN) for single and double sampling plans respectively were developed. The operating characteristic values for the two sampling plans were also obtained. The sampling p...

DOI: 10.67897/njma.2019.oifrrfxp

Apr, 2019 Vol. 28, Issue 1 10 views 8 downloads