
Charalambos GnardellisUniversity of Patras | UP
Charalambos Gnardellis
PhD
About
68
Publications
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Introduction
Charalambos Gnardellis currently works at University of Patras. Charalambos does research in Statistics, Epidemiology and Nutrition.
Skills and Expertise
Publications
Publications (68)
Background
Road Traffic Injuries (RTI’s) are a significant public health concern for children, placing a considerable burden on their well-being. Greece has consistently recorded high numbers of RTI’s among adolescents.
Methods
A university lab (LaHeRS, HMU) offers a road safety education program for primary and secondary students in Heraklion, Gr...
The majority of juvenile offenses in Greece are related to road traffic violations. Juveniles in Crete region are required to attend an educational program offered by LaHeRS lab (HMU), in collaboration with the Prosecutor’s Office as part of reformative measures. The current presentation reports on the profile and aberrant driving behavior of juven...
Background
Road traffic crashes are a major cause of death and disability for people aged 15–29 years. Almost 80% of juvenile delinquency cases in Greece, concern violations of the Traffic Code. Juveniles in Greece never bear full criminal responsibility as adults do, and may be sanctioned with educational measures, which replace a more severe pena...
Excessive smartphone use and dependence on social media give rise to multiple issues that negatively affect the overall well-being of individuals. Nomophobia is characterized as a “digital disease” due to the unlimited use of smartphone devices. The aim of this study is to examine smartphone use and social media involvement in association with nomo...
Nomophobia refers to the contemporary fear of being unable to communicate sufficiently via a smartphone. As reported in the literature, nomophobia leads to excessive smartphone use, and one of the crucial issues of this overuse is its effect on physical and mental health. The current study aimed to investigate the association between perceived heal...
Smartphones with their numerous applications have become essential daily equipment, prompting scientific research to deal with the impact of their use on psychosocial health. Under this spectrum, the aim of the present cross-sectional study was to examine the association between nomophobia and the negative emotional states of depression, anxiety, a...
The use of logistic regression models in data analysis and machine learning has expanded in recent years and has become the primary preference of researchers in risk assessment studies across a wide range of scientific fields. From the assessment of credit risk in financial institutions to the estimation of risk factors for traffic accidents or the...
Nomophobia is characterized as apprehension of being apart from smartphone, which causes the user to seek proximity with the device. The purpose of this study was to explore the prevalence and factors associated to nomophobia among young adults in Athens, the capital city of Greece. A cross-sectional study was performed on a sample of 1408 young ad...
Nomophobia is a relatively new term describing someone’s fear, discomfort, or anxiety when his/her smartphone is not available. It is reported that low self-esteem may contribute to an individual’s tendency for nomophobia. The aim of this particular study was to investigate the association between nomophobia and self-esteem among Greek university s...
The extensive use of logistic regression models in analytical epidemiology as well as in
randomized clinical trials, often creates inflated estimates of the relative risk (RR). Particularly, in cases where a binary outcome has a high or moderate incidence in the studied population (>10%), the bias in assessing the relative risk may be very high. Me...
Nomophobia is defined as the fears caused to individuals by the lack of access or use their smartphone. The aim was to make a cultural adaptation and validation of the Greek version of the Nomophobia Questionnaire (NMP-Q) as well as to explore nomophobia’s association with several sociodemographic determinants among university students. The origina...
Background:
Nomophobia (No MObile PHone PhoBIA) refers to the worry or fear that individuals experience when they are without their mobile phone or they are unable to use it. The term was first coined in 2008 and it is considered a modern type of phobia. The aim of the present study was to retrieve and review the most relevant literature on the pr...
Background
Tattooing is becoming an increasingly common trend mainly but not merely among the youth. However, the choice of ink body art is associated with an increase of dermatological complications.
Aim
To assess young persons’ health knowledge and motives toward tattooing.
Methods
The main instrument used was an online structured questionnaire...
Background
The current paper is part of the EU-funded REHABILAID Project and aims to describe the profile of cyclists sustaining severe injuries in a road traffic incident as well as the healthcare costs associated with their injury, including hospitalization costs and out-of-pocket expenditure.
Methods
Seven public hospitals were involved; Greece...
Introduction:
This study aimed to assess the physical, psychological, and economic burden shouldered by severely injured two-wheel users in three European countries as well as the cost resulting from their hospitalization.
Methods:
A total of seven public hospitals were involved in three countries: Greece, Italy, and Germany. Participants enroll...
There is apt evidence in favor of a significant association between sleep and mortality. So far, most studies examine sleep problems using comprehensive, time-consuming tools and questions. In this study, we investigated the ability of four simple “yes” or “no” answered questions (i.e. easiness to fall asleep, restful upon awakening, sleep satisfac...
Objective:
Stress is the most frequent seizure-precipitating factor reported by patients with epilepsy, while stressful life events may increase seizure susceptibility in humans. In this study, we investigated the relations between both biological and behavioral measures of stress in children with a first epileptic seizure (hereafter called seizur...
Objective:
Investigating the role of religiosity in mortality.
Design:
A retrospective cohort study (mean follow-up period 131.2 ± 30.8 months) in 1519 rural citizens in Greece (57.1% women, mean age 56.9 ± 20.4 years).
Main outcome measures:
Measurements included education, disease status, body mass index, lifestyle, sleep-quality and self-ra...
Adolescence is a crucial phase of human life characterized by enhanced exposure and vulnerability to various stressful stimuli. The Adolescent Stress Questionnaire (ASQ) is a useful measure to evaluate possible sources of stressors affecting the adolescent equilibrium. The present study examines the scientific properties of the Greek version of ASQ...
The current paper reports on the results of a pilot study aiming to investigate the effect of mobile telephone use on the driving performance of 5 amateur and 5 professional drivers. Their driving acuity was tested through a driving simulator. Analysis and interpretation of the results occurred comparing the drivers' driving performance while talki...
To evaluate changes in endothelial progenitor cells (EPCs) and cytokines in patients with diabetic foot ulceration (DFU) in association with wound healing.
We studied healthy subjects, diabetic patients not at risk of DFU, at risk of DFU and with active DFU. We prospectively followed the DFU patients over a 12-week period. We also investigated simi...
Objective:
The present study is designed to understand the contribution of peripheral vascular disease and peripheral neuropathy to the wound-healing impairment associated with diabetes. Using a rabbit model of diabetic neuroischemic wound healing, we investigated rate of healing, leukocyte infiltration, and expression of cytokines, interleukin-8...
This study aimed to investigate prospective changes to neurophysiologic function over 3 years in patients with well-controlled diabetes. Sixty-two subjects had neurologic examinations, symptom scores, autonomic testing, nerve conduction studies, quantitative sensory testing, and laser-Doppler flowmetry at 18-month intervals for 3 years. During the...
Objective:
The objective of this paper is to study the effect of aliskiren on metabolic parameters and micro- and macrovascular reactivity in individuals diagnosed with or at high risk for developing type 2 diabetes mellitus (T2DM).
Research design and methods:
We studied 47 T2DM and 41 at-risk individuals in a randomized, double-blinded, placeb...
The current study aimed to assess the frequency of helmet use in a sample of Greek motorcycle riders as well as identify factors affecting self-reported helmet use including the riders’ motivations and various socio-demographic, environmental and trip-related characteristics.MethodA probabilistic, stratified random sampling was performed to select...
Aims: Validation of the Greek version of Work Ability Index (WAI). Study Design: A cross sectional survey of 943 workers from a shipyard industry. Place and Duration of Study: University of Patras, Medical School, Public Health Department, HSY occupational health department, Greece in 2006-07. Methodology: The translation and cultural adaptation of...
Objective:
To identify differences in postexercise phosphocreatine (PCr) recovery, an index of mitochondrial function, in diabetic patients with and without lower extremity complications.
Methods:
We enrolled healthy control subjects and three groups of patients with type 2 diabetes mellitus: without complications, with peripheral neuropathy, an...
We examined the role of vascular function and inflammation in the development and failure to heal diabetic foot ulcers (DFUs). We followed 104 diabetic patients for a period of 18.4 ± 10.8 months. At the beginning of the study, we evaluated vascular reactivity and serum inflammatory cytokines and growth factors. DFUs developed in 30 (29%) patients....
Self-rated health (SRH) is a health measure related to future health, mortality, healthcare services utilization and quality of life. Various sociodemographic, health and lifestyle determinants of SRH have been identified in different populations. The aim of this study is to extend SRH literature in the Greek population. This is a cross-sectional s...
To translate the Perceived Stress Scale (versions PSS-4, -10 and -14) and to assess its psychometric properties in a sample of general Greek population.
941 individuals completed anonymously questionnaires comprising of PSS, the Depression Anxiety and Stress scale (DASS-21 version), and a list of stress-related symptoms. Psychometric properties of...
We examined the influences of obesity and diabetes on endothelium-dependent and -independent vasodilation, inflammatory cytokines, and growth factors. We included 258 subjects, age 21-80 years in four groups matched for age and gender: 40 healthy nonobese (BMI <30 kg·m(-2)) nondiabetic subjects, 76 nonobese diabetic patients, 37 obese (BMI >30) non...
OBJECTIVE
To investigate changes in the foot muscle energy reserves in diabetic non-neuropathic and neuropathic patients.
RESEARCH DESIGN AND METHODS
We measured the phosphocreatinine (PCr)/inorganic phosphate (Pi) ratio, total 31P concentration, and the lipid/water ratio in the muscles in the metatarsal head region using MRI spectroscopy in healt...
We investigated the association between inflammation, microvascular reactivity, and the development of peripheral diabetic neuropathy.
We studied three groups: 55 healthy control subjects, 80 nonneuropathic patients, and 77 neuropathic diabetic patients. We also subdivided the neuropathic patients into a subgroup of 31 subjects with painless neurop...
PurposeThe current study investigated the impact of lifestyle and sleep-related factors on the probability of car crash involvement in a country that lacks good crash and driver history data. This is considered to be one of the few research studies exploring crash risk on the basis of the driver’s lifestyle, using a holistic approach of lifestyle i...
This study aimed to determine whether long-term oral fluoroquinolone administration exerts a significant positive effect on mobility and mortality in elderly subjects with asymptomatic bacteriuria. 132 institutionalized patients were divided into 4 groups: groups A and B were treated with ofloxacin while groups C and D were positive and negative co...
To determine the level of satisfaction and the factors that influence inpatient satisfaction in the Greek National Health System, a survey questionnaire, examining patient views on all aspects of hospital care, was conducted. Data collection was made via mail after patients' discharge from hospital. A total of 4209 questionnaires were received from...
Many Greek politicians and media attribute high dissatisfaction with the public health services to the quality of public hospitals. Provoking this view, this study attempts to investigate the patient's opinion and provides some preliminary results for the level of services provided by three public hospitals. A patient satisfaction survey with a sel...
Within the context of a national study on the prevalence of male inmates' HIV-risk behaviour, we present data regarding the HIV-related knowledge of a sub sample of inmates in terms of modes of HIV transmission, methods of HIV prevention and risks of HIV transmission within prison. The sample comprised a randomly selected group of 242 inmates from...
In the context of the Greek segment of the European Prospective Investigation into Cancer and Nutrition (EPIC), we conducted a cross-sectional study to examine the effects of the intake of plant foods central in the traditional Mediterranean diet on plasma levels of alpha-carotene, beta-carotene, lycopene, beta-cryptoxanthin, and lutein-zeaxanthin....
Although past research has globally supported the salutary impact of religion on health and health-related behaviors, it has not extensively examined the impact of the Christian Orthodox Church's way of living on people's health and health-related behavior.
Semistructured personal interviews were used to investigate a stratified sample of 20- to 65...
To examine whether the same amount of energy intake has different consequences on body mass index (BMI), depending on the source of energy from specific macronutrients.
Cross-sectional study, in the context of the European Prospective Investigation into Cancer and nutrition (EPIC).
Communities all over Greece.
A total of 27 862 apparently healthy v...
The waist-to-hip ratio (WHR) has emerged as an important risk factor for several chronic diseases, but little quantitative information exists about its relation with energy intake and expenditure in men and women.
We examined the relative role of energy intake and physical activity as determinants of WHRs in men and women, after adjustment for body...
Road traffic accidents in Greece are one of the major problems of the public health sector and the first cause of death in the ages 18-24. However, there are no records available for defining the determinants of road accidents and seatbelt wearing rates. The main objective of this study is to determine and clarify the relationship between young dri...
The aim of this study was to assessthe differences in nutrition-relatedknowledge, attitudes and behavior ofhigh-school children between one schoolin which a nutrition education programhas been implemented and another onein which no emphasis has been given onthe issue of nutrition. Data were collect-ed in 1998, from a total of 375 high-school childr...
To identify the correlates of injecting drug use within prison.
A national cross-sectional study, participation being voluntary and anonymous.
Ten Greek prisons.
A representative sample of 1000 male inmates; 861 questionnaires were completed and analysed.
A self-report questionnaire for demographics, penal history, drug use and sharing injecting eq...
The empirical evidence concerning the quantitative relations between energy intake and expenditure on the one hand and body mass index (BMI) on the other is inconclusive. We have used a large database of 14,281 individuals, for whom habitual dietary intake and expenditure have been ascertained with adequate methodology, to examine the mutually adju...
Female and male volunteers of the Aegean island of Lesvos participated in an epidemiological, cross-sectional study to examine total serum cholesterol (TC) and high density (HDL-C) levels, to study gender differences and explore changes in blood lipids with menopause. Five hundred sixty three females and three hundred thirty two males, ages 30 to 7...
OBJECTIVE. The study of body weight in relation to the frequency of breakfast consumption among students in Greece. METHOD. A questionnaire was completed by 436 students of the School of Health and Welfare Sciences of Athens Technological Educational Institute, covering socio-demographic characteristics and dietary habits, as well as food attitudes...
A prospective cohort study, involving 141 Anglo-Celts and 189 Greek-Australians of both sexes aged 70 years or more, was undertaken in Melbourne, Australia. The objective was to evaluate whether adherence to the principles of the Mediterranean diet affects survival of elderly people in developed non-Mediterranean countries. Diet was assessed using...
We present a national cross-sectional comparative study of injecting drug use amongst male inmates in Greek prisons in relation to demographic and penal variables. A representative sample of 1,000 inmates were randomly selected from ten correctional institutions. 861 questionnaires were included in the analysis. 290 inmates (33.6%) reported injecti...
ΣΚΟΠΟΣ ΑΞΙΟΛΟΓΗΣΗ ΤΩΝ ΓΝΩΣΕΩΝ ΚΑΙ ΑΠΟΨΕΩΝ ΣΠΟΥΔΑΣΤΩΝ ΤΟΥ ΤΕΧΝΟΛΟΓΙΚΟΥ ΕΚΠΑΙΔΕΥΤΙΚΟΥ ΙΔΡΥΜΑΤΟΣ (ΤΕΙ) ΑΘΗΝΑΣ ΣΕ ΘΕΜΑΤΑ ΔΙΑΤΡΟΦΗΣ ΚΑΙ ΚΑΤΑΓΡΑΦΗ ΤΩΝ ΔΙΑΤΡΟΦΙΚΩΝ ΣΥΝΗΘΕΙΩΝ ΤΟΥΣ. ΥΛΙΚΟ-ΜΕΘΟΔΟΣ Η ΣΥΛΛΟΓΗ ΤΩΝ ΔΕΔΟΜΕΝΩΝ ΤΗΣ ΕΡΕΥΝΑΣ ΠΡΑΓΜΑΤΟΠΟΙΗΘΗΚΕ ΣΤΗ ΣΧΟΛΗ ΕΠΑΓΓΕΛΜΑΤΩΝ ΥΓΕΙΑΣ ΚΑΙ ΠΡΟΝΟΙΑΣ (ΣΕΥΠ) ΤΟΥ ΤΕΙ ΤΗΣ ΑΘΗΝΑΣ ΚΑΙ ΣΥΜΜΕΤΕΙΧΑΝ 436 ΣΠΟΥΔΑΣΤΕΣ - 85 ΑΓΟΡΙ...
To investigate the frequency and the determinants of under-reporting in a semi-quantitative food frequency questionnaire used in the Greek segment of the European Prospective Study on Nutrition, Cancer and Health (EPIC study).
A food frequency questionnaire was completed by 9262 adult men and women. The questions included in this questionnaire cove...
We evaluated the reproducibility and relative validity of a 190-item semi-quantitative food frequency questionnaire (FFQ) to be used in a large prospective study in the Athens area of Greece.
In all, 42 men and 38 women, aged 25-67 years, completed two self-administered semi-quantitative FFQ spaced approximately 1 year apart. Within this 1-year int...
To assess the influence of a specific dietary pattern on overall survival.
Cohort study.
Three rural Greek villages, the data from which were collected as part of an international cross cultural study of food habits in later life.
182 elderly residents of the three villages.
Overall mortality.
Diet was assessed with a validated extensive semiquanti...
In 1988 and 1989, we investigated in three Greek villages the dietary patterns of 182 men and women aged > 70 y by using a validated semiquantitative food-frequency questionnaire and compared these dietary patterns with the traditional Greek diet as ascertained in the late 1950s by Keys and his colleagues. As in the traditional diet, olive oil domi...
We evaluated the reproducibility and validity of a 190-item semiquantitative food frequency questionnaire (FFQ) to be used in a large prospective study in the Athens area of Greece. Eighty persons, 42 men and 38 women, ages 25-67 years, completed a self-administered FFQ, followed by monthly 24-hour diet recalls and then a second FFQ 1 year after th...
Experimental animal studies suggest that olive oil consumption, as contrasted to consumption of other fat types, does not enhance the occurrence of chemically induced mammary tumors, but human data are sparse. Furthermore, evidence is inconclusive concerning the role of food groups, as distinct from that of major nutrients, in the etiology of breas...
Data from several studies are presented which suggest that the traditional Greek diet still exists in several parts of Greece and several segments of the population. The most profound changes in dietary intakes in recent years concern the increase in the consumption of meat and the decrease in the consumption of pulses.
The purpose of this study was to investigate the outcome of patients with invasive breast cancers showing a mixture of invasive ‘ductal’ carcinoma of no special type (NST) and invasive lobular carcinoma. Survival of mixed ductal and lobular carcinomas was compared with a series of patients with pure invasive ductal carcinomas of NST. From a total o...