János Sándor

Dr. János Sándor

Department of Public Health and Epidemiology, Faculty of Medicine, University of Debrecen, 4012 Debrecen, Kassai 26, Hungary

Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 March 2017 in International Journal of Public Health
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Journal Article
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János SándorJános Sándor
János Sándor
ZKZsigmond Kósa
Zsigmond Kósa
KBKlára Boruzs
Klára Boruzs
JBJulianna Boros
Julianna Boros
ITIldikó Tokaji
Ildikó Tokaji
RÁRóza Ádány
Róza Ádány
Objectives We investigated whether the severely disadvantaged health of Hungarian Roma adults living in segregated settlements changed by the Decade of Roma Inclusion program. Methods We compared the results of two paired health interview surveys that we carried out using the same methodology before and after the Decade, on the general Hungarian and Roma populations. Results Self-perceived health status of younger Roma worsened, while it improved among older Roma. Reported experience of discrimination reduced considerably and health care utilization improved in general. Positive changes in smoking and nutrition, and negative changes in alcohol consumption and overweight were observed. Many of observed changes can plausibly be linked to various government policies, including a quadrupling of public works expenditure, banning smoking in public places, restricting marketing of tobacco products, increasing cigarette prices, and a new tax on unhealthy foods. Liberalization of rules on alcohol distillation coincided with worsening alcohol consumption. Conclusions We have shown that Roma remain severely disadvantaged and present an innovative sampling method which can be used to monitor changes in groups where identification is a challenge.

Róza ÁdányRóza Ádány
Róza Ádány
PPPeter Piko
Peter Piko
SFSzilvia Fiatal
Szilvia Fiatal
ZKZsigmond Kósa
Zsigmond Kósa
János SándorJános Sándor
János Sándor
Margit BalazsMargit Balazs
Margit Balazs
Data mainly from one-off surveys clearly show that the health of Roma, the largest ethnic minority of Europe, is much worse than that of the general population. However, results from comprehensive exploratory studies are missing. The aim of our study was to create a complex database for comparative and association studies to better understand the background of the very unfavourable health of Roma, especially the high burden of cardiometabolic diseases. A three-pillar (questionnaire-based, physical and laboratory examinations) health survey was carried out on randomly selected samples of the Hungarian general (HG, n = 417) and Roma (HR, n = 415) populations, and a database consisting of more than half a million datapoints was created. Using selected data, the prevalence rates of metabolic syndrome (MetS) and of its components were determined, and to estimate the risk of insulin resistance (IR), surrogate measures (the homeostasis model assessment of insulin resistance index, quantitative insulin sensitivity check index, McAuley and TyG indices and the TG/HDL-C ratio) were calculated. Receiver operating characteristic curve analysis and Youden’s method were used to define the optimal cut-off values of each IR index. The prevalence of MetS was very high in both study populations (HG: 39.8%, HR: 44.0%) with no statistically significant difference between the two groups in females or males. The prevalence of MetS showed a very marked increase in the HR 35–49 years age group. Among surrogate measures, the TyG index showed the greatest power for predicting IR/MetS at a cut-off value of 4.69 (77% sensitivity, 84% specificity) and indicated a 42.3% (HG) and 40.5% (HR) prevalence of IR. The prevalence of MetS and IR is almost equally very unfavourable in both groups; thus, the factors underlying the high premature mortality burden of Roma should be further clarified by investigating the full spectrum of risk factors available in the database, with a special focus on the access of Roma people to preventive and curative health services.

GNGabriella Nagy-Pénzes
Gabriella Nagy-Pénzes
FVFerenc Vincze
Ferenc Vincze
János SándorJános Sándor
János Sándor
ÉBÉva Bíró
Éva Bíró
The importance of puberty on later health status and behavior is indisputable, which also means that it is worth making intervention efforts during this period of life. However, whether better health-related knowledge is correlated with favorable health behavior in adolescents is an important, still unanswered question. Our objective was to examine this relationship. The participants were ninth-grade secondary school students. Data were collected using anonymous, self-administered questionnaires. The knowledge-related questions were compiled by the authors, while the questions concerning eating habits, physical activity, demographic and socioeconomic data were taken from the Health Behavior in School-Aged Children survey. The relationship between knowledge and behavior was investigated with structural equation modeling adjusted for gender, age, and socioeconomic status. The results demonstrated a good fit to the data, but better knowledge was not related to behavior in our sample. This finding suggests that adolescents’ health behavior is highly influenced by the living context; therefore, appropriate knowledge is necessary but not sufficient to improve adolescents’ behavior. Hence, comprehensive health promotion programs could provide solutions for encouraging healthy behavior.

13 November 2019 in Journal of Clinical Medicine
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IMIldikó Judit Márton
Ildikó Judit Márton
JHJózsef Horváth
József Horváth
PLPéter Lábiscsák
Péter Lábiscsák
BMBernadett Márkus
Bernadett Márkus
BDBalázs Dezső
Balázs Dezső
Csongor KissCsongor Kiss
Csongor Kiss
Salivary IL-6 mRNA was previously identified as a promising biomarker of oral squamous cell carcinoma (OSCC). We performed a multi-center investigation covering all geographic areas of Hungary. Saliva from 95 patients with OSCC and 80 controls, all Caucasian, were collected together with demographic and clinicopathological data. Salivary IL-6 mRNA was quantified by real-time quantitative PCR. Salivary IL-6 protein concentration was measured by enzyme-linked immune-sorbent assay. IL-6 protein expression in tumor samples was investigated by immunohistochemistry. Normalized salivary IL-6 mRNA expression values were significantly higher (p < 0.001) in patients with OSCC (mean ± SE: 3.301 ± 0.885) vs. controls (mean ± SE: 0.037 ± 0.012). Differences remained significant regardless of tumor stage and grade. AUC of the ROC curve was 0.9379 (p < 0.001; 95% confidence interval: 0.8973–0.9795; sensitivity: 0.945; specificity: 0.819). Salivary IL-6 protein levels were significantly higher (p < 0.001) in patients (mean ± SE: 70.98 ± 14.06 pg/mL), than in controls (mean ± SE: 12.45 ± 3.29). Specificity and sensitivity of IL-6 protein were less favorable than that of IL-6 mRNA. Salivary IL-6 mRNA expression was significantly associated with age and dental status. IL-6 manifestation was detected in tumor cells and tumor-infiltrating leukocytes, suggesting the presence of a paracrine loop of stimulation. Salivary IL-6 mRNA is one of the best performing and clinically relevant biomarkers of OSCC.

1 December 2013
Verified
Journal Article
Closed access
TBTamás Bödecs
Tamás Bödecs
ESEnikő Szilágyi
Enikő Szilágyi
PCPéter Cholnoky
Péter Cholnoky
János SándorJános Sándor
János Sándor
Xenia GondaXenia Gonda
Xenia Gonda
BHBoldizsár Horváth
Boldizsár Horváth

10 July 2015 in Health and Quality of Life Outcomes
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ÁJÁgnes Jenei
Ágnes Jenei
János SándorJános Sándor
János Sándor
Csaba HegedusCsaba Hegedus
Csaba Hegedus
KBKinga Bágyi
Kinga Bágyi
LNLászló Nagy
László Nagy
IMIldikó Judit Márton
Ildikó Judit Márton
Aspects of oral health related quality of life (OHRQoL) attracted an increased attention recently. The aim of the study was to assess self-reported oral health related quality of life (OHRQoL) among patients requiring prosthetic rehabilitation and to determine the rate of improvement 1 month and 6–12 months after therapy. In addition, effect of age, gender, oral health indicators and denture types before treatment were assessed on OHRQoL as evaluated and reported by the patients. Hungarian version of OHIP-49 (OHIP-49-H) questionnaire was completed before oral rehabilitation (T0-phase) by 389 patients undergoing prosthetic replacement. After 1 month (T1-phase) and 6–12 months (T2-phase) recall periods 235 and 92 patients completed the questionnaire. The median interquartile range (IQR) values of the total OHIP-49-H score were calculated for T0-, T1- and T2-phases. Reliability of the questionnaire was checked by Cronbach’s statistics. Age, gender, oral health indicators and denture types of patients before and after treatment were recorded and treatment-associated changes in OHRQoL were evaluated. The study demonstrated the excellent reliability and internal consistency of OHIP-49-H by a high and narrow range of Cronbach’s alpha value (0.81-0.93). A median OHIP-49-H score of 52; IQR = 25-83 demonstrated a poor OHRQoL on first admission. Decreasing median total OHIP-49-H scores 1 month (24; IQR = 9-51; p < 0.001) and 6–12 months (20; IQR = 7-37; p = 0,055) after therapy indicated an improvement of OHRQoL. Patients’ age and CPI value assessed before treatment proved to be significant factors of OHRQoL. Here we presented representative data about self-assessed OHRQoL of patients requiring prosthetic treatment from Hungary using OHIP-49-H questionnaire. The results demonstrated that the restoration of oral health was associated with an improvement in patients’ OHRQoL. According to the demographical and T0 phase clinical status, the treatment was more effective in the respect of OHIP-49-H score improvement among females (than among males), among younger (than among more aged), and among patients with more serious CPI assessed at T0. The type of prosthetic interventions did not exert a significant effect on total OHIP-49-H score, suggesting that the improvement in OHRQoL is independent from the type of denture applied.