Machine learning approach for predicting heart and diabetes diseases using data-driven analysis

IAES International Journal of Artificial Intelligence (IJ-AI)
Vol. 12, No. 4, December 2023, pp. 1687~1694
ISSN: 2252-8938, DOI: 10.11591/ijai.v12.i4.pp1687-1694  1687
Journal homepage: http://ijai.iaescore.com
Machine learning approach for predicting heart and diabetes
diseases using data-driven analysis
Usha Sekar, Kanchana Selvarajan
Department of Computer Science, Faculty of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur,
TamilNadu, India
Article Info ABSTRACT
Article history:
Received Jun 23, 2022
Revised Jan 28, 2023
Accepted Mar 10, 2023
Environmental changes and food habits affect people's health with numerous
diseases in today's life. Machine learning is a technique that plays a vital role
in predicting diseases from collected data. The health sector has plenty of
electronic medical data, which helps this technique to diagnose various
diseases quickly and accurately. There has been an improvement in accuracy
in medical data analysis as data continues to grow in the medical field. Doctors
may have a hard time predicting symptoms accurately. This proposed work
utilized Kaggle data to predict and diagnose heart and diabetic diseases. The
diseases heart and diabetes are the foremost cause of higher death rates for
people. The dataset contains target features for the diagnosis of heart disease.
This work finds the target variable for diabetic disease by comparing the
patient's blood sugars to normal levels. Blood pressure, body mass index
(BMI), and other factors diagnose these diseases and disorders. This work
justifies the filter method and principal component analysis for selecting and
extracting the feature. The main aim of this work is to highlight the
implementation of three ensemble techniques-Adaptive boost, Extreme
Gradient boosting, and Gradient boosting-as well as the emphasis placed on
the accuracy of the results.
Keywords:
Adaptive boost
Chi-square
Gradient boost
Prediction
Principal component analysis
This is an open access article under the CC BY-SA license.
Corresponding Author:
Usha Sekar
Department of Computer Science, Faculty of Science and Humanities, SRM Institute of Science and
Technology, Kattankulathur, Chengalpattu Dt., TamilNadu, India
Email: us3648@srmist.edu.in
1. INTRODUCTION
Healthy living is crucial to a good quality of life. A healthcare professional prevents, treats, and
inspects diseases to improve health. Because of the inexactness of the information provided by the patient, it
can be challenging to determine a specific disease based on their symptoms [1]. Globally predicting diseases
is a crucial challenge in fundamental problems [2]. Many diseases are associated with particular symptoms and
signs. It can be inherited, caused by infection, or triggered by stress [3]. Due to the residents' modern lifestyle,
there is a risk of mortality and morbidity from diseases like heart disease, chronic respiratory disease, and
diabetes [4]. Nowadays, millions of people worldwide suffer and die from many diseases [5]. The majority of
people with multiple disorders are also distressed by numerous infections.
In today's society, predicting disease based on early-stage symptoms is a very tough challenge for
physicians in the medical field. The field of medical informatics and disease prediction has become increasingly
relevant to the community of data scientists in recent years. Data repute, multi-attribution, incompleteness, and a
close correlation will occur when manually collecting medical data, making it difficult to identify disease
symptoms. The extensive use of computer-based technologies in the health sector has resulted in the availability
of colossal health databases for researchers. Many surgical research studies are using these electronic records [6].
Nowadays, all hospitals maintain electronic health data for patients to find the symptoms and diagnose the disease.

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A health care system can be revolutionized by analyzing and interpreting the information recorded in electronic
health records, providing feedback, and implementing changes based on collected data [7].
Machine learning techniques have become increasingly significant in various fields in the past decade,
including the health care system and biomedical research [8]. In addition, correctly medicating a patient with
a large amount of data is an enormous task. Since the advent of the digital era and technological innovations,
several multidimensional patient data sets have been developed, including clinical data, hospital resource
information, and patient disease diagnosis information. A complex data set must be analyzed to extract valuable
insights [9]. The proposed work aims to develop heart and diabetic disease prediction models from a single
dataset incorporating machine learning algorithms, specifically supervised learning methods that employ the
ensemble method for more than one disease prediction in a single dataset.
Heart disease has been the leading cause of death worldwide in recent decades [10]. Since the heart
is a significant part of the human body, various factors cause heart disease, and people exhibit different
symptoms [11]. People consider the disease diabetes is a high sub challenge with deadly chronic disease [12].
Due to the increase in sugar in blood and fat, people affect their daily lives a lot.
In health care systems, machine learning techniques can support medical practitioners in promptly
and cost-effectively diagnosing various diseases from medical data [13]. Specifying probable disorders could
help patients conduct medical tests on targeted medicine. The patient might skip extensive medical tests due to
a lack of medical information, leading to severe health problems. In most cases, machine learning identifies
the patterns in massive datasets, which can involve human intelligence. Machine learning (ML) approaches
can aid in building prediction models that can handle and analyze vast volumes of complex medical data and
efficiently find the presence or absence of disease in a patient, which can help address this difficulty [14].
The main aim of recursion enhanced random forest with an improved linear model (RFRF-ILM) is to
find the key features. The prediction model produces better performance by combining the classification model.
This work compares the essential variables that suggest that coronary artery disease develops more frequently
as people age [15]. This paper describes disease progression and predicts disease outcomes. A proposed novel
approach [16] uses a model with various features and known classifier techniques to recognize the relevant
factors through a machine learning algorithm, leading to better predicting accuracy of cardiovascular disease.
Based on the prediction model's hybrid random forests with the linear model (HRFLM), it produced 88.7% of
the accuracy value. According to [17], it is tough to identify diabetic disease. A rigorous framework has been
developed by rejecting outliers and eliminating missing values. After selecting features, various machine
classifiers standardize the data. By estimating the area under receiver operator characteristic curve, the method
improved the outcome by weighting the classifier model and producing a better prediction.
The work [18] has proposed a hybrid technique by applying different machine learning classifiers to
diagnose cardiovascular disease-the various classifier helps this study to evaluate the performance metrics
using weka and keel tools. The primary intent of this work is to choose the best classifier by comparing each
classifier's accuracy value. This system [19] used a python tool to perform preprocessing with neighborhood
cleaning rule and feature engineering. AutoML, advanced extended gradient boost and advanced ensemble
bagging models are applied. Specialists perform this work to identify whether or not someone has
cardiovascular disease and diagnose the patient's condition. Studies suggested in [20] used four ML methods
to estimate diabetes risk, where bagging and boosting techniques were used to enhance robustness. Among the
existing algorithms, the Random Forest algorithm provides the most accurate results. The study employs [21]
the AdaBoost and bagging ensemble techniques using the J48 (c4.5) decision tree as a base learner and
standalone data mining methodology. The method applied was to classify the patients with diabetes using
diabetes risk indicators. In the study, the Adaboost ensemble method outperformed bagging and a standalone
J48 decision tree in terms of overall performance.
The [22] work aims to develop a model to predict diabetics. K-nearest neighbor (KNN) helps reduce
the processing time, and support vector machine (SVM) allocates a class for all the sample datasets. Selecting
features in this work helps build four classifiers. In addition, the researchers used four algorithms in this study
to determine the efficacy and accuracy of predicting whether or not people will have diabetes. According to
the study [23], A hierarchical ensemble model combines a decision tree and logistic regression classifiers
trained independently. The neural network joined with the previous model at the next level provides overall
better accuracy.
This work mainly focuses on diagnosing the risk of heart and diabetes diseases and encourages people
to have good health. The proposed study reveals that two chronic ailments, such as diabetes and heart disease,
can be predicted using the filter method chi-square and principal component analysis (PCA). Creating
classification techniques in diagnostics can help to avoid human error. The model utilized ensemble boosting
strategies such as Adaboost, Gradient boost, and Extreme Gradient boost to improve prediction accuracy.
Accordingly, the rest of the paper follows section 2 as a method. Section 3 presents a result and discussion.
Finally, section 4 covers the conclusion with future work.

Int J Artif Intell ISSN: 2252-8938 
Machine learning approach for predicting heart and diabetes diseases using data-driven … (Usha Sekar)
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2. METHOD
This section describes datasets, feature selection, and the ensemble, such as Adaptive boost, Gradient
boost, and Extreme Gradient boost classifier. Figure 1 depicts the pipeline of disease prediction—the proposed
system structured into different phases. The phases contained in this work are data collection, data
preprocessing and selecting features, feature extraction, splitting the data, classifier models, evaluation metrics,
and comparison of ensemble classifier models.
Figure 1. Disease prediction pipeline
2.1. Dataset collection
The detection of disease using machine learning is a challenging task. Rather than model complexity,
interpretability, or computational burden, the doctor is most concerned with whether the model is reliable and
effective in predicting illness. Phase one of the work proposed was a collection of data from the University of
California Irvine (UCI) repository. The data collection has 12 attributes and one target attribute. The dataset
has continuous or categorical data types.
2.2. Data preprocessing
Data preprocessing is one of the processes considered the most crucial step in classification. The
process is to remove the inappropriate inexplicable, and continual features. The feature contains noisy data, a
format that cannot be used in the model and fills the missing values using the KNN Impute method. The range
of glucose values helps to determine the independent variable for diabetes.
2.3. Feature selection and extraction
In machine learning, feature selection techniques play a pivotal role in selecting the features [24]. The
selection method reduced the original feature set into several sub-features to reduce model complexity, improve
computational efficiency, and reduce generalization errors caused by irrelevant features. All the features are
ranked based on the chi-square method's score. The chi-square approach is a statistical procedure that shows
how well the observed frequency data values match the predicted frequency data values for independent
variables. Extracting only the best features is essential to maximize a machine learning classifier's performance
since irrelevant features can negatively affect performance. This phase involves identifying imperative features
within the dataset using principal component analysis.
2.4. Boosting classifier
In a boosting algorithm, the classifiers generate sequentially. Boosting [25] is designed to train a set
of classifiers consecutively and then combine them for prediction, where the later classifiers correct mistakes
made by the earlier ones. A boosting classifier turns weak classifiers into more robust models to enhance
accuracy. This work trained different boosting classifier techniques, i.e., Adaptive boosting, Extreme Gradient
boosting machine, and Gradient boosting machine, to predict the heart and diabetics diseases.
2.4.1. Adaptive boosting
The adaptive boosting algorithm has been widely used in classification [26]. In 1997, Freund and
Schapire proposed the adaptive boosting (AdaBoost) algorithm. This boosting technique helps weak learners
perform better using an ensemble approach. It improves the performance of the classifier when used alongside
different algorithm types. Adaptative boosting is exceptionally robust to noise and outliers in data.

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2.4.2. Gradient boosting
Gradient boosting (GB) has typically solved the regression and classification problems. The prediction
model constructs through a set of decision trees constructed stage-by-stage. Decision trees are frequently used
to accomplish Gradient boosting. The primary benefit of Gradient boosting is that it reduces the remaining
preceding time in each calculation. In terms of generalization, the GB performs well as an ensemble classifier.
The GB implements a regularisation term, regulating the model's complexity and preventing overfitting [27].
2.4.3. Extreme gradient boosting
The XGBoost algorithm is said to be a robust boosting algorithm. It's a more advanced variant of the
Gradient boosting method that was introduced to predict the errors or residuals from prior models, and then the
new model is blended with the old. This model controls overfitting, eliminating interference with outliers and
making the model more accurate and stable [28].
2.5. Classification accuracy
The proposed system used a boosting classifier such as Adaboost, XGBoost, and Gradient boost to
predict the disease. One of the essential performance indicators for categorization is accuracy. It says that the
percentage of the total sample is correctly classified. A classification report performs all the boosting classifiers
to produce accurate results. These classifiers combine to assess their performance based on classification
accuracy [29]. The accuracy measure assesses the ability of a model to predict the future. The given (1)
represents the formula for accurate classification.
FN
FP
TN
TP
TN
TP
Accuracy
+
+
+
+
=
(1)
Where,
− TP: The classifier predicted TRUE, which was the correct class in the case of true positive.
− TN: In the case of real negatives, the classifier predicted FALSE, and it was the suitable class.
− FP: When there are false positives (FP), the classifier predicts TRUE, and the correct class is FALSE.
− FN: Models predict false when they have diseases in the case of false negatives.
3. RESULTS AND DISCUSSION
The proposed system utilizes the same dataset to diagnose heart and diabetic ailments. The dataset
contains 12 independent and one dependent feature. The features included in this dataset are id, age, sex,
weight, height, gender, blood pressure (both systolic and diastolic), cholesterol, glucose, smoking, alcohol, and
physical activity. It has come to be known that the given dataset can also predict diabetic disease by finding
separate target variables. Algorithm 1 shows that the target feature of a person with diabetes has been evaluated
based on the range of glucose values. In the target attribute, the value is 1 for patients with diabetes, whereas
0 is the value for those who do not have diabetes. The given dataset contains two target attributes: diabetes and
heart target. The proposed work develops a prediction model that takes the symptoms from the user and predicts
the heart and diabetics diseases.
Algorithm 1. Finding target features for diabetic
Require: Input: Health Care dataset.
for ∀ glucose feature do
if data(value)>range
dia_target=1
else
dia_target=0
end if
end for
The proposed work uses the Correlation and Chi-square selection method to select features after data
preprocessing. A heat map represents the correlation between the target and other features and shows the
relationship between the features. Figure 2 and Figure 3 uses a heat map to highlight the correlation between
the dataset's attributes in both predictions. This heat map represents values as colors in a two-dimensional
representation. In one glance, it provides a quick visual summary of data. The viewer can easily comprehend
complex datasets using more elaborate heat maps. The feature method increases the classification accuracy.
According to the principle of feature importance, all the features have a score value that determines
the extent. Figure 4 describes the most significant feature for prediction based on the feature importance

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generated by the filter method. The subset of features used to predict both diseases is different in this work.
This works estimated the most significant features as sysbp, glucose, age, chol, ciger for heart disease and
api_hi, weight, api, age, and cholesterol for diabetic disease. The highest rank helps to select the features to
predict heart and diabetes disease based on the importance score.
Figure 2. Correlation features of diabetic’s disease
Figure 3. Correlation features of heart disease

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In the final phase, the methodology provides a better accuracy by boosting classifiers, including
AdaBoosting, Gradient Boosting, and XGBoosting. These results were obtained by combining selected
parameters (by using chi-square) with PCA to devise the best classifiers to diagnose the disease. PCA reduces
the dimensionality of the input and lowers computation complexity, and speeds up the training process by
applying the principle component analysis to the input features. In this study Figure 5 depicts the most
significant accuracy outcomes of heart and diabetics diseases.
Figure 4. Feature importance of heart and diabetics disease
Figure 5. Classification accuracy of heart and diabetic disease
The result section compares all boosting classifiers in both diseases' predictions. The classification
results are shown in Table 1. The table shows the classification results for heart disease and people with
diabetes using the boosting classifier and concluded that Extreme Gradient boosting (XGBoosting) performed
well and produced the highest accuracy value.
Table 1. Classification result
Classifier
Accuracy Score
Heart Disease Diabetic Disease
Adaptive Boosting 71.4 94.09
Gradient Boosting 70.9 95.2
Extreme Gradient Boosting 71.9 96.48
4. CONCLUSION
This study aims to develop a dependable and accurate predictive model for heart and diabetic disease.
It has used a single dataset for predicting heart and diabetic disease. The given dataset has both target variables
for heart and diabetic diseases. Filter method Chi-square selected the feature to diagnose disease. PCA was

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used to extract the features. The three ensemble boosting classifiers: are Adaboost, Gradient boost, and
XGBoost. Results showed that XGBoost provides a higher accuracy value than other boosting algorithms in
both disease predictions. Future work needs a better performance metric value by implementing a hybrid model
for both diseases.
ACKNOWLEDGEMENTS
I am pleased to thank my research supervisor Dr. S. Kanchana for her guidance and enthusiastic
encouragement of my research work. This article receives no financial support for its research, authorship,
and/or publication.
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BIOGRAPHIES OF AUTHORS
S. Usha received the B.Sc. & MCA. degree, respectively, from Madurai Kamaraj
Univeristy. She has worked as an Assistant Professor for 12 yrs in SRM Institute of Science
& Technology. Now, currently she is pursuing Ph.D as Full Time Research Scholar in
Department of Computer Science, SRM Institute of Science & Technology, Kattankulathur,
Chennai, India. Her research area includes Image Processing, Data Mining, Cloud
Computing, Machine Learning, and Deep Learning. She has published a paper in
International journal and presented paper in national and international conference. She can
be contacted at email: us3648@srmist.edu.in
Dr. S. Kanchana Working as an Assistant Professor in the Department of
Computer Science at SRM Institute of Science and Technology, Chennai. She obtained her
Ph.D degree from Bharathiar University. She has published more than 15 research papers in
National and International Journals and presented paper in a Conferences. She has received
Best poster Presentation Award in ISCA-2015. Her research interest includes Data Mining,
Machine Learning, IOT, and Cloud Computing. She can be contacted at email:
kanchans@srmist.edu.in

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Machine learning approach for predicting heart and diabetes diseases using data-driven analysis