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The Effects of Educational Level on Breast Cancer Awareness: A Cross-Sectional Study in Turkey
Gurdal, Sibel Ozkan,Saracoglu, Gamze Varol,Oran, Ebru Sen,Yankol, Yucel,Soybir, Gursel Remzi Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.1
Breast self-examination (BSE) is important for early diagnosis of breast cancer (BC). However, the majority of Turkish women do not perform regular BSE. We aimed to evaluate the effects of education level on the attitudes and behaviors of women towards BSE. A descriptive cross-sectional study was conducted on 413 women (20-59 years), divided into university graduates (Group I, n = 224) and high school or lower graduates (Group II, n = 189). They completed a 22-item scale assessing the knowledge level, attitudes and behaviors regarding BSE, and the Turkish version of the Champion's Revised Health Belief Model. A significantly higher number of women in Group II did not believe in early diagnosis of BC. A significantly higher number of Group I had conducted BSE at least once, and their BSE frequency was also significantly high. Moreover, a significantly lower number of Group I women considered themselves to not be at risk for BC and the scores for "perceived susceptibility" and "perceived barriers" were significantly higher. Logistic regression analysis identified the university graduate group to have a higher likelihood of performing BSE, by 1.8 times. Higher educational levels were positively associated with BSE performance. Overall, the results suggest that Turkish women, regardless of their education level, need better education on BSE. Consideration of the education level in women will help clinicians develop more effective educational programs, resulting in more regular practice and better use of BSE.
TRIPLE SEQUENCES IN THE TOPOLOGY INDUCED BY RANDOM 2-NORMS
GURDAL, VERDA The Korean Society for Computational and Applied M 2022 Journal of applied and pure mathematics Vol.4 No.1/2
In this article we define and study the notions of $\mathcal{I}$-convergence and $\mathcal{I}$-Cauchy of triple sequences in the topology induced by random 2-normed spaces and prove some theorems based on them.
SOME RESULTS FOR THE FRACTIONAL INTEGRAL OPERATOR DEFINED ON THE SOBOLEV SPACES
GURDAL, MEHMET,NABIEV, ANAR ADILOGLU,AYYILDIZ, MERAL The Korean Society for Computational and Applied M 2022 Journal of applied mathematics & informatics Vol.40 No.1-2
We investigated the invariant subspaces of the fractional integral operator in the Sobolev space W<sup>k</sup><sub>p</sub>[0, 1] and prove unicellularity of the operator J<sup>α</sup> by using the Duhamel product.
CERTAIN ASPECTS OF ${\mathcal{I}}$-LACUNARY ARITHMETIC STATISTICAL CONVERGENCE
MEHMET GURDAL The Korean Society for Computational and Applied M 2023 Journal of applied and pure mathematics Vol.5 No.3
In this paper, we firstly presented the definitions of arithmetic ${\mathcal{I}}$-statistically convergence, ${\mathcal{I}}$-lacunary arithmetic statistically convergence, strongly ${\mathcal{I}}$-lacunary arithmetic convergence, ${\mathcal{I}}$-Cesàro arithmetic summable and strongly ${\mathcal{I}}$-Cesàro arithmetic summable using weighted density via Orlicz function ${\tilde{\phi}}$. Then, we proved some theorems associated with these concepts, and we examined the relationship between them. Finally, we establish some sequential properties of ${\mathcal{I}}$-lacunary arithmetic statistical continuity.
Factors Predicting Microinvasion in Ductal Carcinoma in situ
Ozkan-Gurdal, Sibel,Cabioglu, Neslihan,Ozcinar, Beyza,Muslumanoglu, Mahmut,Ozmen, Vahit,Kecer, Mustafa,Yavuz, Ekrem,Igci, Abdullah Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.1
Background: Whether sentinel lymph node biopsy (SLNB) should be performed in patients with pure ductal carcinoma in situ (DCIS) of the breast has been a question of debate over the last decade. The aim of this study was to identify factors associated with microinvasive disease and determine the criteria for performing SLNB in patients with DCIS. Materials and Methods: 125 patients with DCIS who underwent surgery between January 2000 and December 2008 were reviewed to identify factors associated with DCIS and DCIS with microinvasion (DCISM). Results: 88 patients (70.4%) had pure DCIS and 37 (29.6%) had DCISM. Among 33 DCIS patients who underwent SLNB, one patient (3.3%) was found to have isolated tumor cells in her biopsy, whereas 1 of 14 (37.8%) patients with DCISM had micrometastasis (7.1%). Similarly, of 16 patients (18.2%) with pure DCIS and axillary lymph node dissection (ALND) without SLNB, none had lymph node metastasis. Furthermore, of 20 patients with DCISM and ALND, only one (5%) had metastasis. In multivariate analysis, the presence of comedo necrosis [relative risk (RR)=4.1, 95% confidence interval (CI)=1.6-10.6, P=0.004], and hormone receptor (ER or PR) negativity (RR=4.0, 95%CI=1.5-11, P=0.007), were found to be significantly associated with microinvasion. Conclusions: Our findings suggest patients presenting with a preoperative diagnosis of DCIS associated with comedo necrosis or hormone receptor negativity are more likely to have a microinvasive component in definitive pathology following surgery, and should be considered for SLNB procedure along with patients who will undergo mastectomy due to DCIS.
Certain aspects of $\mathcal{I}$-lacunary arithmetic statistical convergence
Mehmet Gurdal 한국전산응용수학회 2023 Journal of Applied and Pure Mathematics Vol.5 No.3
In this paper, we firstly presented the definitions of arithmetic $\mathcal{I}$-statistically convergence, $\mathcal{I}$-lacunary arithmetic statistically convergence, strongly $\mathcal{I}$-lacunary arithmetic convergence, $\mathcal{I}$-Ces\`{a}ro arithmetic summable and strongly $\mathcal{I}$-Ces\`{a}ro arithmetic summable using weighted density via Orlicz function $\widetilde{\phi}$. Then, we proved some theorems associated with these concepts, and we examined the relationship between them. Finally, we establish some sequential properties of $\mathcal{I}$-lacunary arithmetic statistical continuity.
Triple sequences in the topology induced by random 2-norms
Verda Gurdal 한국전산응용수학회 2022 Journal of Applied and Pure Mathematics Vol.4 No.1
In this article we define and study the notions of \mathcal{I}-convergence and \mathcal{I}-Cauchy of triple sequences in the topology induced by random 2-normed spaces and prove some theorems based on them.
Kayhan, Arda,Gurdal, Sibel Ozkan,Ozaydin, Nilufer,Cabioglu, Neslihan,Ozturk, Enis,Ozcinar, Beyza,Aribal, Erkin,Ozmen, Vahit Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.4
Background: The Bahcesehir Breast Cancer Screening Project is the first organized population based breast cancer mammographic screening project in Turkey. The objective of this prospective observational study was to demonstrate the feasibility of a screening program in a developing country and to determine the appropriate age (40 or 50 years old) to start with screening in Turkish women. Materials and Methods: Between January 2009 to December 2010, a total of 3,758 women aged 40-69 years were recruited in this prospective study. Screening was conducted biannually, and five rounds were planned. After clinical breast examination (CBE), two-view mammograms were obtained. True positivity, false positivity, positive predictive values (PPV) according to ACR, cancer detection rate, minimal cancer detection rate, axillary node positivity and recall rate were calculated. Breast ultrasound and biopsy were performed in suspicious cases. Results: Breast biopsy was performed in 55 patients, and 18 cancers were detected in the first round. The overall cancer detection rate was 4.8 per 1,000 women. Most of the screened women (54%) and detected cancers (56%) were in women aged 40-49. Ductal carcinoma in situ (DCIS) and stage I cancer and axillary node positivity rates were 22%, 61%, and 16.6%, respectively. The positive predictivity for biopsy was 32.7%, whereas the overall recall rate was 18.4 %. Conclusions: Preliminary results of the study suggest that population based organized screening are feasible and age of onset of mammographic screening should be 40 years in Turkey.
ON LACUNARY STATISTICAL ϕ-CONVERGENCE FOR TRIPLE SEQUENCES OF SETS VIA IDEALS
Isil Acik Demirci,Mehmet Gurdal 한국전산응용수학회 2022 Journal of applied mathematics & informatics Vol.40 No.3
In the present paper, we introduce some new notions of Wijsman \mathcal{I}-statistical convergence with the use of Orlicz function, lacunary sequence and triple sequences of sets, and obtain some analogous results from the new definitions point of views.