BACKGROUNDMost patients with epilepsy want to learn as much as possible about the disease, and many have turned to the internet for information. Patients are likely to use information obtained from the internet to control their epilepsy, but little is known about the accuracy of this information. In this survey, we have assessed the feasibility and usability of internet-based interventions for the treatment of epilepsy.

METHODSData were collected from an internet search. Different search terms were used to obtain general information on epilepsy together with information about medication, types of epilepsy, treatment, women's health, and other information. The accuracy of the information was evaluated by a group of experts.

RESULTSA total of 1320 web pages were assessed. The majority were websites related to health. A large number (80.2%) of web pages contained content related to the search term. A significant number of web pages 450/1058 (42.5%) claimed to provide information from a credible source; however, only 206/1058 (19.5%) of the information was accurate and complete; 326/1058 (30.8%) was accurate but incomplete; 328/1058 (31.0%) was correct but nonstandard, and 198/1058 (18.8%) was inaccurate. The authenticity of the information was not significantly different between the two search engines (χ2 = 0.009, P = 0.924). No significant difference was observed in the information obtained from a specialist or nonspecialist source (χ2 = 7.538, P = 0.057). There was also no correlation between the quality of the information and the priority (χ2 = 6.880, P = 0.076).

CONCLUSIONSSearching for information about epilepsy on the internet is convenient, but the information provided is not reliable. Too much information is inaccurate or for advertisement purposes, and it is difficult for patients to find the useful information. Turning to the internet for medical knowledge may be harmful. Physicians should be aware that their patients may search for information on the internet and guide them to safe, reputable websites.

Chi-Square Distribution ; Epilepsy ; Humans ; Internet ; Software

This study examines the factors that are associated with accidents from riding on inline skates and/or kick boards among students in the elementary schools. Data were collected from 902 students in 3 elementary schools in Seoul. Data were analyzed based on descriptive statistics and chi-square test. The results were as follows: 1.Thirty-eight percent of the students investigated were found to have kick boards while sixty-one percent of the students had inline skates. 2.The age of mothers who answered the questionnaires showed a statistically significant association with injuries of their children on inline skates and/or kick boards. Children whose mothers are younger had a lower percentage of injuries on inline skates and/or kick boards. 3. Children with a lower score on K-CBCL had a higher chance of having an accident from riding on inline skates and/or kick boards. That is, children with lack of attention were more likely to be involved in an accident. First-born children were less likely to have an accident. 4. While mothers' attitudes toward the safety of inline skates and kick boards appeared not to be associated with accidents of their children, their preventive actions for the safety related to riding on inline skates and kick boards reduced the chance to be involved in an accident of their children. In conclusion, this study shows that mothers with children going to the elementary schools should be more action-oriented to prevent their children's accidents from riding on inline skates and/or kick boards than merely recognizing the safety of inline skates and/or kick boards on their own. Implication of these findings and major findings of this study were discussed.
Chi-Square Distribution ; Child ; Humans ; Mothers ; Seoul ; Child Health

No abstract available.
Biometry ; Chi-Square Distribution ; Research Personnel ; Data Interpretation, Statistical

PURPOSE: This study aimed to evaluate the accuracy and adequacy of research papers reporting statistical testings for mean differences. METHODS: Original research articles utilized t-test, Chi-square test, and ANOVA were reviewed from Korean Journal of Women Health Nursing published from the year 2004 to 2006. Seventy-six papers were evaluated in accordance with formatted criteria in respect to an inclusiveness of research title, accuracy of statistical methods and presentation styles, and errors in reporting statistical outcomes. RESULTS: Research titles were quite comprehensive, however overall accuracy of statistical values and basic formats reached only 60 to 80% by items. Details of the presentation in the reporting of outcomes were not complied with the guidelines, which need careful concerns of the writers. Errors of English in table presentation were found in more than 30% of the papers. CONCLUSION: The outcome would be reflected in the submission guidelines for future writers. To reach the level comparable with internationally recognized nursing journals, concrete knowledge to apply statistical methods should be ensured in the processes of submission, reviews, and editing.
Analysis of Variance ; Chi-Square Distribution ; Nursing ; Women's Health

WHY: Calculating the sample size is essential to reduce the cost of a study and to prove the hypothesis effectively. HOW: Referring to pilot studies and previous research studies, we can choose a proper hypothesis and simplify the studies by using a website or Microsoft Excel sheet that contains formulas for calculating sample size in the beginning stage of the study. MORE: There are numerous formulas for calculating the sample size for complicated statistics and studies, but most studies can use basic calculating methods for sample size calculation.
Chi-Square Distribution ; *Research Design ; *Sample Size ; Statistics as Topic/*methods

OBJECTIVE: We performed the transvaginal ultrasonographic evaluation of uterine cervix and fetal fibronectin in cervicovaginal secretions in women after 37 complete weeks of gestation to predict the onset of labor. METHODS: Total 80 primiparous or multiparous women were divided into two groups on the duration between evaluation and onset of labor. The biometric analysis of uterine cervix(cervical index, endocervical length, funneling, funnel length and width) was done by transvaginal ultrasonography. The cervicovaginal fetal fibronectin was measured by fetal fibronectin immunoassay (ELISA kit, Adeza Biochemical, USA). The efficacy of these method was analyzed with Pearson chi-square test, receiver-operator characteristic curves, and multiple logistic regression test. RESULTS: 1) There were no significant differences in clinical characteristics between two groups. 2) Group 1(onset of labor within 7 days after evaluation) showed significantly shorter endocervical length(Group 1: 2.33+/-0.75cm,Group 2: 2.93+/- 0.42cm, p=0.013), higher value of cervical index(Group 1: 1.27+/-0.67, Group 2: 0.62+/-0.34, p=0.008) and higher level of fetal fibronectin(Group 1: 98.65+/-11.34ng/ml, Group 2: 13.37+/- 2.7ng/ml, p=0.004). 3) The ROC curve analysis showed that a level of endocervical length <2.64mm, cervical index> 0.7, fetal fibronectin> 60ng/ml had the diagnostic performance in predicting group 1. Fetal fibronectin level in cervicovaginal secretion> 60ng/ml showed the highest diagnostic index in predicting the onset of labor within 7 days(p<0,001, odds ratio=21.3). CONCLUSION: Cervicovaginal fetal fibronectin predicts delivery within 7 days more accurately than cervical index, endocervical length. Combine use of these tests improve the diagnostic efficiency and allowed prediction of onset of labor, identifying a subgroup of patients who may require aggressive treatment.
Cervix Uteri ; Chi-Square Distribution ; Female ; Fibronectins* ; Humans ; Immunoassay ; Logistic Models ; Pregnancy* ; ROC Curve ; Ultrasonography*

OBJECTIVETo compare the outcome of non-operative treatment with the outcome of surgical intraventricular drainage for patients with posttraumatic hydrocephalus including complications, mortality and favorable outcome.

METHODSThirty-nine patients were assigned to a nonoperative treatment group and 38 patents to a surgical intraventricular drainage group. Each patient's outcome was evaluated 3 years after treatment by using Glasgow Outcome Scale.

RESULTSIn the nonoperative treatment group the rate of favor able outcome (good recovery or mild disability) was 89.74% (35 of 39 patients) and the mortality was 2.56% (1 of 39 patients). In the surgical intraventricular drainage group the rate of favorable outcome was 71.05% (27 of 38 patients) and the mortality was 13.16% (5 of 38 patients; P<0.05). Mortality was not significantly different between the two groups.

CONCLUSIONSNonoperative treatment may be better than surgical intraventricular drainage for patients with posttraumatic hydrocephalus.

Adult ; Brain Injuries ; complications ; Chi-Square Distribution ; Female ; Humans ; Hydrocephalus ; etiology ; mortality ; therapy ; Male ; Treatment Outcome

OBJECTIVE: The aim of the study was to analyze the prevalence and distribution of ectopic eruption of the permanent maxillary first molar (EEM) in individuals scheduled for orthodontic treatment and to investigate the association of EEM with dental characteristics, maxillary skeletal features, crowding, and other dental anomalies. METHODS: A total of 1,317 individuals were included and randomly divided into two groups. The first 265 subjects were included as controls, while the remaining 1,052 subjects included the sample from which the final experimental EEM group was derived. The mesiodistal (M-D) crown width of the deciduous maxillary second molar and permanent maxillary first molar, maxillary arch length (A-PML), maxillomandibular transverse skeletal relationships (anterior and posterior transverse interarch discrepancies, ATID and PTID), maxillary and mandibular tooth crowding, and the presence of dental anomalies were recorded for each subject, and the statistical significance of differences in these parameters between the EEM and control groups was determined using independent sample t-tests. Chi-square tests were used to compare the prevalence of other dental anomalies between the two groups. RESULTS: The prevalence of maxillary EEM was 2.5%. The M-D crown widths, ATID and PTID, and tooth crowding were significantly greater, while A-PML was significantly smaller, in the EEM group than in the control group. Only two subjects showed an association between EEM and maxillary lateral incisor anomalies, which included agenesis in one and microdontia in the other. CONCLUSIONS: EEM may be a risk factor for maxillary arch constriction and severe tooth crowding.
Chi-Square Distribution ; Constriction ; Crowns ; Incisor ; Malocclusion ; Molar* ; Prevalence ; Risk Factors

OBJECTIVETo investigate the feasibility and safety of modified quadruple stapling technique in radical proximal gastrectomy for gastric carcinoma.

METHODSMedical records of 55 consecutive patients who underwent radical proximal gastrectomy for gastric cancer were analyzed retrospectively. Twenty-eight patients (modified group) undergoing modified quadruple stapling technique were compared to 27 patients (traditional group) who underwent traditional approach during the same period.

RESULTSThere was no perioperative mortality. All the patients had negative pathological resection margin. The mean operative time in the modified group was significantly shorter than that in the traditional group [(158±31) min vs. (195±42) min, P<0.05]. There were no immediate complications such as stricture, bleeding or leakage at the anastomosis, gastroparesis, and wound infection. Postoperative recovery did not differ between the two groups (P>0.05). During the follow-up (range: 3 months-2 years), 2 (7.1%) patients in the modified group and 2 (7.4%) in the traditional group developed reflux esophagitis (P>0.05) and anastomotic inflammation occurred in 2 cases (7.1%) for the modified group and 8 (29.6%) for the traditional group (P<0.05).

CONCLUSIONModified quadruple stapling technique is a feasible and safe method in radical proximal gastrectomy.

Anastomosis, Surgical ; methods ; Chi-Square Distribution ; Follow-Up Studies ; Humans ; Retrospective Studies ; Stomach Neoplasms ; surgery

OBJECTIVETo investigate the potential correlation between the single nucleotide polymorphisms (SNPs) in the KLKB1 region and pulmonary thromboembolism(PTE) in a Chinese Han population.

METHODSIn this case-control study, 95 patients with confirmed PTE were enrolled as the PTE group and 90 healthy subjects as the control group. The genotypes, alleles, and haplotypes of the SNPs were analyzed with PLINK 1.07 and Haploview 4.2 software using chi-square test and Logistic regression analysis. SNPs were further analyzed under three genetic models (additive, dominant, and recessive).

RESULTSThe distribution of rs3733402 in KLKB1 gene showed significant difference between PTE group and control group (P=0.041). The distributions of GTG haplotypes consisted of rs2292423, rs4253325,and rs3733402 in KLKB1 gene were also significantly different between PTE group and control group(P=0.040).

CONCLUSIONThe rs3733402 locus variation in KLKB1 gene is associated with PTE in Chinese Han people.

Alleles ; Case-Control Studies ; Chi-Square Distribution ; Genotype ; Haplotypes ; Humans ; Kallikreins ; Polymorphism, Single Nucleotide ; Pulmonary Embolism