scholarly journals Sentiment analysis of consumer reviews – a comparison of organic and regular food products usage

2020 ◽  
Vol 14 (2) ◽  
pp. 155-167
Author(s):  
B. Rajeswari ◽  
S. Madhavan ◽  
Ramakrishnan Venkatesakumar ◽  
S. Riasudeen
Keyword(s):  
Demographic Data ◽  
Food Products ◽  
Consumer Attitude ◽  
Product Reviews ◽  
Content Type ◽  
Significant Difference ◽  
Organic Products ◽  
The Mean ◽  
Attitude Shift ◽  
Sentiment Score

Purpose This study aims to compare online review characteristics, review length and review sentiment score between “organic” and “regular” food products. In addition, variations in the consumer sentiment scores across the review lengths are studied. Design/methodology/approach This study fits into the descriptive research design. From Amazon’s website, the consumer product reviews are scrapped. Using the text analytical package “sentiment” in R-Studio, we computed the sentiment scores and counted the number of words in each review. The mean sentiment scores and mean review length are compared for regular and organic products using one-way ANOVA. Sentiment score variation across review length and product class is studied through factorial ANOVA. Sample reviews of ghee and honey are used to test the hypotheses. Findings The review length shows a significant difference between the regular and organic products. The mean number of words in the regular products reviews is significantly lower than the mean number of words in the organic product reviews. The regular products’ mean sentiment score is significantly lower than the mean sentiment score of organic products. The mean sentiment scores are not consistent between ghee and honey. Sentiment scores are better for organic honey and regular ghee products. For regular ghee products, longer reviews result in lower sentiment scores. For regular and organic versions of honey, longer reviews are associated with better sentiment scores. Research limitations/implications This study did not include the helpfulness of a review and the demographic data of the reviewers. Practical implications Sentiment scores’ variations across the regular and organic and product categories such as ghee and honey give a comprehensive feedback to the firms. It also indirectly communicates a brand’s evaluation by the consumers and the performance feedback for an upward extension like the organic category. Social implications Studies on organic category give feedback for environment-friendly products and consumer attitude shift towards safer products. Originality/value Very limited studies have reported the upward line extensions. The authors study the upward line extension organic and associated sentiment scores variation. The role of review length and its systematic influence on the sentiment scores, variations in the review due to the product nature (organic/regular) are unique contributions of this study.

Gamma knife radiosurgery for intracranial metastatic melanoma: a 6-year experience

2002 ◽  
Vol 97 ◽  
pp. 494-498 ◽  
Author(s):  
Jorge Gonzalez-martinez ◽  
Laura Hernandez ◽  
Lucia Zamorano ◽  
Andrew Sloan ◽  
Kenneth Levin ◽  
...  
Keyword(s):  
Prognostic Factors ◽  
Brain Metastases ◽  
Metastatic Melanoma ◽  
Gamma Knife Radiosurgery ◽  
Tumor Control ◽  
Karnofsky Performance Scale ◽  
Content Type ◽  
Significant Difference ◽  
The Mean ◽  
Fine Print

Object. The purpose of this study was to evaluate retrospectively the effectiveness of stereotactic radiosurgery for intracranial metastatic melanoma and to identify prognostic factors related to tumor control and survival that might be helpful in determining appropriate therapy. Methods. Twenty-four patients with intracranial metastases (115 lesions) metastatic from melanoma underwent radiosurgery. In 14 patients (58.3%) whole-brain radiotherapy (WBRT) was performed, and in 12 (50%) chemotherapy was conducted before radiosurgery. The median tumor volume was 4 cm3 (range 1–15 cm3). The mean dose was 16.4 Gy (range 13–20 Gy) prescribed to the 50% isodose at the tumor margin. All cases were categorized according to the Recursive Partitioning Analysis classification for brain metastases. Univariate and multivariate analyses of survival were performed to determine significant prognostic factors affecting survival. The mean survival was 5.5 months after radiosurgery. The analyses revealed no difference in terms of survival between patients who underwent WBRT or chemotherapy and those who did not. A significant difference (p < 0.05) in mean survival was observed between patients receiving immunotherapy or those with a Karnofsky Performance Scale (KPS) score of greater than 90. Conclusions. The treatment with systemic immunotherapy and a KPS score greater than 90 were factors associated with a better prognosis. Radiosurgery for melanoma-related brain metastases appears to be an effective treatment associated with few complications.

The Percutaneous Surgical Approach for Repairing Acute Achilles Tendon Rupture

2010 ◽  
Vol 100 (4) ◽  
pp. 270-275 ◽  
Author(s):  
Shay Tenenbaum ◽  
Niv Dreiangel ◽  
Ayal Segal ◽  
Amir Herman ◽  
Amnon Israeli ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Tendon Rupture ◽  
Demographic Data ◽  
Achilles Tendon Rupture ◽  
Treatment Modalities ◽  
Main Concern ◽  
Complication Rates ◽  
Percutaneous Surgery ◽  
Significant Difference ◽  
The Mean

Background: Treatment modalities for acute Achilles tendon rupture can be divided into operative and nonoperative. The main concern with nonoperative treatment is the high incidence of repeated ruptures; operative treatment is associated with risk of infection, sural nerve injury, and wound-healing sequelae. We assessed our experience with a percutaneous operative approach for treating acute Achilles tendon rupture. Methods: The outcomes of percutaneous surgery in 29 patients (25 men; age range, 24–58 years) who underwent percutaneous surgery for Achilles tendon rupture between 1997 and 2004 were retrospectively evaluated. Their demographic data, subjective and objective evaluation findings, and isokinetic evaluation results were retrieved, and they were assessed with the modified Boyden score and the American Orthopaedic Foot and Ankle Society Ankle-Hindfoot Scale. Results: All 29 patients demonstrated good functional outcome, with no- to mild-limitations in recreational activities and high patient satisfaction. Mean follow-up was 31.8 months. Changes in ankle range of motion in the operated leg were minimal. Strength and power testing revealed a significant difference at 90°/sec for plantarflexion power between the injured and healthy legs but no difference at 30° and 240°/sec or in dorsiflexion. The mean modified Boyden score was 74.3, and the mean Ankle-Hindfoot Scale score was 94.5. Conclusions: Percutaneous surgery for Achilles tendon rupture is easily executed and has excellent functional results and low complication rates. It is an appealing alternative to either nonoperative or open surgery treatments. (J Am Podiatr Med Assoc 100(4): 270–275, 2010)

scholarly journals Why do some people search for their files much more than others? A preliminary study

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ofer Bergman ◽  
Tamar Israeli ◽  
Yael Benn
Keyword(s):  
Verbal Memory ◽  
Design Methodology ◽  
Demographic Data ◽  
Future Research ◽  
Visuospatial Memory ◽  
Content Type ◽  
Logical Memory ◽  
The Mean ◽  
Preliminary Study ◽  
People Search

PurposePrevious research has repeatedly shown that people only search for files in a small minority of cases when they do not remember the file's location. The current study aimed to examine whether there is a group of hyper-searchers who search significantly more than others. Based on previous neurocognitive studies, this study aims to hypothesize that if such a group exists, they will have superior verbal memory and reduced visuospatial memory.Design/methodology/approachIn total, 65 participants completed a questionnaire estimating their search percentages, as well as reporting demographic data. Verbal memory was measured using the Wechsler logical memory test, and visuospatial memory was assessed using an online card memory game.FindingsHyper-searchers were defined as participants with search percentage of over one standard deviation (SD) above the mean. The average search percentage of the seven participants who met this criterion was 51% (SD = 14%), over five times more than the other participants (M = 10%, SD = 9%). Similar results were obtained by re-analyzing data from four previous papers (N = 1,252). The results further confirmed the hypothesis that hyper-searchers have significantly better verbal memory than other participants, possibly making searching easier and more successful for them. Lastly, the search percentage was positively predicted by verbal memory scores and negatively predicted by visuospatial memory scores. Explanations and future research are discussed.Originality/valueThis preliminary study is the first to introduce the concept of hyper-searchers, demonstrate its existence and study its causes.

Attitudes and behaviour towards organic products: an exploratory study

2008 ◽  
Vol 36 (2) ◽  
pp. 158-175 ◽  
Author(s):  
Efthimia Tsakiridou ◽  
Christina Boutsouki ◽  
Yorgos Zotos ◽  
Kostantinos Mattas
Keyword(s):  
Organic Food ◽  
Food Products ◽  
Local Economy ◽  
Health Concern ◽  
Future Research ◽  
Consumer Decision Making ◽  
Content Type ◽  
Actual Behaviour ◽  
Trade Offs ◽  
Organic Products

PurposeThe aim of this paper is to identify consumers' attitudes and behaviour towards organic products in Greece.Design/methodology/approachThis paper draws on a non‐probability quota sample of 660 respondents to explore the attitudes and behaviour of Greek consumers towards organic food products.FindingsGreek consumers seem to be informed about environmental and health issues. They seek information about the nutritional value of food and demand more products free from chemical residues. The results show that most consumers associate organic consumption mainly with fruit and vegetables. Although demographics seem to affect attitudes towards organics, their value in explaining actual behaviour is minimal.Research limitations/implicationsIt is recognized that the data gathered in this study focus on the metropolitan area of Thessaloniki, Greece. The specific area though, is considered to be representative of the total Greek population. The results confirm that health, concern for the environment, animal welfare and support of the local economy are drivers of organic consumption. However, there is an indication that the importance of motives and barriers may vary for different product categories and perhaps future research should focus on product segmentation.Practical implicationsAlthough certain similarities in consumers' attitudes towards organic food products have been identified, this paper records the variation in behaviour towards organics among the various consumer groups examined in Greece, and highlights the gap between attitudes and actual behaviour. Given the complexity of consumer decision making, future research should explore the other value trade‐offs that consumers make.Originality/valueThis paper attempts to provide evidence on the relatively under researched area of organics attitudes and behaviour in Greece.

Ventricular volume change in childhood

2002 ◽  
Vol 97 (3) ◽  
pp. 584-590 ◽  
Author(s):  
Chris Xenos ◽  
Spyros Sgouros ◽  
Kalyan Natarajan
Keyword(s):  
Statistical Difference ◽  
Linear Regression Analysis ◽  
Ventricular Volume ◽  
Intracranial Volume ◽  
Normal Children ◽  
Content Type ◽  
Ventricular Volumes ◽  
Significant Difference ◽  
The Mean ◽  
Fine Print

Object. The aim of this study was to construct a model of age-related changes in ventricular volume in a group of normal children ages 1 month to 15 years, which could be used for comparative studies of cerebrospinal fluid circulation disorders and cerebral atrophy developmental syndromes. Methods. A magnetic resonance imaging—based segmentation technique was used to measure ventricular volumes in normal children; each volume was then plotted against the child's age. In addition, intracranial volumes were measured and the ratio of ventricular to intracranial volume was calculated and plotted against age. The study group included 71 normal children, 39 boys and 32 girls, whose ages ranged from 1 month to 15.3 years (mean 84.9 months, median 79 months). The mean ventricular volume was 21.3 cm3 for the whole group, 22.7 cm3 in boys and 19.6 cm3 in girls (p = 0.062, according to t-tests). The mean ventricular volume at 12 months for the whole group was 17 cm3 (20 cm3 in boys and 15 cm3 in girls), representing 65% of the volume achieved by 15 years of age (87% in boys and 53% in girls). The volume increased by a factor of 1.53, to 26 cm3 (23 cm3 in males and 28 cm3 in females, increase factors of 1.15 and 1.86, respectively) at 15 years of age. The change in ventricular volume with age is not linear, but follows a segmental pattern. These age periods were defined as: 0 to 3, 4 to 6, 7 to 10, and 11 to 16 years. A statistical difference based on sex was only demonstrated in the first 6 years of life. The mean ventricular volume for the first 6-year period was 22.4 cm3 in boys and 15.7 cm3 in girls, and the difference was significant for the two sexes (linear regression analysis for age and sex, significant according to analysis of variance regression at 0.007, p = 0.108 for age, p = 0.012 for sex). Thereafter, there was no significant difference in ventricular volume between boys and girls with further growth. The ratio of ventricular volume to intracranial volume was 0.0175 for the whole group, 0.017 in boys and 0.018 in girls (p = 0.272, according to t-tests). At 12 months of age the ratio was 0.019; it stabilized to 0.015 at 8 years of age, and increased to 0.018 at 15 years of age. No statistical difference based on sex was demonstrated with growth. Conclusions. The ventricular volume in normal children increases with age by a factor of 1.5; the increase is in a nonlinear segmental pattern. Boys have significantly higher ventricular volumes only in the first 6 years of life. The ventricular/intracranial volume ratio remains stable throughout childhood.

scholarly journals Effect of probiotic consumption on increasing the CD4+ T cell counts among Iranian patients living with HIV

2019 ◽  
Vol 34 (2) ◽  
pp. 123-133
Author(s):  
Hamid Emadi-Koochak ◽  
Zeinab Siami ◽  
Jayran zebardast ◽  
SeyedAhmad SeyedAlinaghi ◽  
Ali Asadollahi-Amin
Keyword(s):  
Repeated Measures ◽  
Antiretroviral Drugs ◽  
Cd4 Count ◽  
People Living With Hiv ◽  
Content Type ◽  
Cd4 Counts ◽  
Cell Counts ◽  
Significant Difference ◽  
The Mean ◽  
Living With Hiv

Purpose During the ART era, persistent immune activation remains a significant challenge in people living with HIV (PLWH). Microbial translocation play an essential role in this setting. Probiotics have several immunological benefits which can reverse this process. The purpose of this paper is to investigate the safety and efficacy of probiotics on CD4 counts among Iranian PLWH. Design/methodology/approach In total, 50 PLWH with CD4 counts above 350 cells/mm3 did not receive ART participated in a randomized, double-blind trial and underwent 24 weeks of treatment with either LactoCare® or placebo twice daily. CD4 counts of the patients were measured at baseline, 12 weeks and 24 later in the two groups. Side effects were measured monthly using a specific checklist. Findings The mean CD4 count of the patients showed a significant difference between the two groups after six months. Through six months follow up, the mean CD4 count of the patients showed a significant reduction as compared to the baseline in the placebo group; however, it did not show a significant difference in the probiotic group. Repeated Measures Anova test showed a significant effect for time × treatment interaction on the CD4 count during the trial course. No significant difference between the two groups concerning adverse events was reported. Originality/value It seems the use of probiotics in PLWH with a CD4 count above 350 cells/mm3 who are not receiving antiretroviral drugs is safe and can reduce the devastating process of CD4+ T cells in these patients.

Compare the effect of aromatherapy using lavender and Damask rose essential oils on the level of anxiety and severity of pain following C-section: A double-blinded randomized clinical trial

2020 ◽  
Vol 17 (3) ◽  
Author(s):  
Ali Abbasijahromi ◽  
Hamed Hojati ◽  
Saeid Nikooei ◽  
Hossein Kargar Jahromi ◽  
Hamid Reza Dowlatkhah ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Essential Oil ◽  
Essential Oils ◽  
Randomized Clinical Trial ◽  
Control Group ◽  
Content Type ◽  
Gate Control Theory ◽  
Significant Difference ◽  
The Mean ◽  
Damask Rose

AbstractBackgroundAnxiety is the most common psychological reaction in women during labor. Similar to numerous other surgeries, postoperative pain is also reported following cesarean section (C-section). According to the (Gate) Control Theory, there is a relationship between pain and psychological problems such as anxiety. Accordingly, the present study aimed to compare the effect of aromatherapy using lavender and Damask rose essential oils on the level of anxiety and severity of pain following C-section.MethodsThis triple-group randomized clinical trial was performed on 90 mothers who visited Motahari Hospital of Jahrom, Iran, for C-section in 2017. The incidence and severity of pain and anxiety were measured and recorded for all three groups prior to intervention. The intervention groups underwent aromatherapy with lavender and Damask rose essential oils. Patients were asked to inhale cotton balls, separately stained with three drops of each essential oil at a distance of 10 cm for 30 mins. The severity of pain and anxiety was measured using the visual analogue scale (VAS) and the Spielberger State-Trait Anxiety Inventory (STAI) 5 min after the specified process, respectively. The control group underwent aromatherapy in a similar fashion with normal saline. Finally, data were analyzed using descriptive statistical indices and ANOVA and Kruskal–Wallis tests in SPSS 21.ResultsThere was no significant difference between the three groups in the mean severity of pain and anxiety before the intervention (p>0.05). The mean severity of pain and overt anxiety in the lavender and Damask rose aromatherapy groups was significantly different than the control group after the intervention (p<0.001). In addition, no significant difference was observed between the overt and overall anxiety levels of the two intervention groups after the intervention (p>0.05).ConclusionsThe findings suggested that inhalation aromatherapy can reduce the severity of overt anxiety and pain after C-section, with Damask rose essential oil showing a larger effect than lavender.

Impact of robotic-assisted approach on lymphadenectomy for colorectal cancer.

2017 ◽  
Vol 35 (4_suppl) ◽  
pp. 787-787
Author(s):  
Reza Gamagami ◽  
Paul Kozak ◽  
Venkata R. Kakarla
Keyword(s):  
Colorectal Cancer ◽  
Lymph Node ◽  
Laparoscopic Surgery ◽  
Lymph Nodes ◽  
Demographic Data ◽  
Robotic Assisted ◽  
Lymph Node Harvest ◽  
Significant Difference ◽  
The Mean ◽  
The Impact

787 Background: In most recent years, robotic assisted laparoscopic surgery (RALS) has proven to be a viable alternative to laparoscopic and traditional open surgery for colorectal cancer. Obtaining the adequate number of lymph nodes is not only essential for accurate staging, but also impacts both prognosis and the need for adjuvant chemotherapy. To date, the efficacy of lymph node harvest for RALS is not well studied or established. The aim of our study is to analyze the impact of RALS on lymphadenectomy for colorectal cancer. Methods: We performed a retrospective review of patients who underwent curative resections for colorectal cancer over a five-year period at a single institution by a single surgeon. Resections were classified as right-sided, sigmoid, or rectal, and subdivided into robotic and non-robotic surgery groups. The demographic data and histopathology were obtained, with an emphasis on the number lymph nodes harvested (LNH) during resections. Emergencies and non-curative resections were excluded. Results: Between January 2010 and December 2015, 136 patients with colorectal cancer underwent curative resections. Sixty-four underwent right-sided resections (28 laparoscopic, 36 robotic). Twenty-five underwent sigmoid resections (11 laparoscopic, 14 robotic), and 47 underwent rectal resections (15 open, 32 robotic). There was no significant difference in age, sex, BMI and ASA scores between the cohorts examined. The mean number of LNH with RALS was significantly higher in all three groups (right-sided—24 vs. 15 ( p= .0001), sigmoid—16 vs. 12 ( p= .046), rectal—19 vs. 4 ( p= .0016)). There was no difference in the rate of adequate lymph node extraction for staging purpose, i.e., 12 lymph nodes in all three groups. Conclusions: Robotic-assisted laparoscopic surgery is associated with a statistically significant increase in lymph node harvest for right-sided, sigmoid and rectal resections for malignancy. Future studies with larger sample sizes are necessary to validate these findings.

Results of degenerative spondylolisthesis treated with posterior decompression alone via a new surgical approach

2001 ◽  
Vol 95 (1) ◽  
pp. 11-16 ◽  
Author(s):  
Tomoaki Kinoshita ◽  
Isao Ohki ◽  
Kenneth R. Roth ◽  
Kageharu Amano ◽  
Hideshige Moriya
Keyword(s):  
Japanese Orthopaedic Association ◽  
Degenerative Spondylolisthesis ◽  
Spinal Instability ◽  
Content Type ◽  
Significant Difference ◽  
Potential Alternative ◽  
The Mean ◽  
New Surgical Technique ◽  
Fine Print

Object. The purpose of this study was to assess radiologically demonstrated results and clinical outcomes in patients with degenerative spondylolisthesis who underwent posterior decompressive surgery via a new (unilateral) approach. This approach allows surgeons to perform central and bilateral decompression while only stripping the muscles unilaterally, thus preserving the posterior osteoligamentous complexes. Methods. The authors evaluated 51 consecutive patients in whom surgery was performed between 1987 and 1996. The mean follow-up period was 4.7 years. There was no statistically significant difference between the pre- and postoperative measurements in percentage of vertebral slippage. Postoperative dynamic angulation statistically decreased compared with its preoperative value (p < 0.05). Improvement of an average of 67% was shown on the Japanese Orthopaedic Association scale, and in 78% of these patients, good to excellent results were demonstrated. Secondary fusion was required in only three patients (5.9%). Conclusions. This new surgical technique offers a potential alternative for the treatment of degenerative spondylolisthesis in a minimally invasive manner, avoiding the risk of causing or aggravating postoperative spinal instability.

Product weakness finder: an opinion-aware system through sentiment analysis

2014 ◽  
Vol 114 (8) ◽  
pp. 1301-1320 ◽  
Author(s):  
Hongwei Wang ◽  
Wei Wang
Keyword(s):  
Sentiment Analysis ◽  
Comparative Evaluation ◽  
Analytical Framework ◽  
Online Reviews ◽  
Product Reviews ◽  
Network Algorithms ◽  
Content Type ◽  
Sentiment Mining ◽  
Highly Correlated ◽  
Sentiment Score

Purpose – Extant methods of product weakness detection usually depend on time-consuming questionnaire with high artificial involvement, so the efficiency and accuracy are not satisfied. The purpose of this paper is to propose an opinion-aware analytical framework – PRODWeakFinder – to expect to detect product weaknesses through sentiment analysis in an effective way. Design/methodology/approach – PRODWeakFinder detects product weakness by considering both comparative and non-comparative evaluations in online reviews. For comparative evaluation, an aspect-oriented comparison network is built, and the authority is assessed for each node by network analysis. For non-comparative evaluation, sentiment score is calculated through sentiment analysis. The composite score of aspects is calculated by combing the two types of evaluations. Findings – The experiments show that the comparative authority score and the non-comparative sentiment score are not highly correlated. It also shows that PRODWeakFinder outperforms the baseline methods in terms of accuracy. Research limitations/implications – Semantic-based method such as ontology are expected to be applied to identify the implicit features. Furthermore, besides PageRank, other sophisticated network algorithms such as HITS will be further employed to improve the framework. Practical implications – The link-based network is more suitable for weakness detection than the weight-based network. PRODWeakFinder shows the potential on reducing overall costs of detecting product weaknesses for companies. Social implications – A quicker and more effective way would be possible for weakness detection, enabling to reduce product defects and improve product quality, and thus raising the overall social welfare. Originality/value – An opinion-aware analytical framework is proposed to sentiment mining of online product reviews, which offer important implications regarding how to detect product weaknesses.

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