The cross-sectional hospital based study was undertaken to provide an efficient and useful cut off point of maternal early third trimester weight, for low birth weight (LBW), based on receiver operating characteristics (ROC) curve among Bengalee mothers of Kolkata, India. A total of 233 mother-baby pairs were included in the present analysis. The means for maternal age and weight were 23.44 (SD...

Many bioinformatics algorithms can be understood as binary classifiers. They are usually trained by maximizing the area under the receiver operating characteristic ( ROC) curve. On the other hand, choosing the best threshold for practical use is a complex task, due to uncertain and context-dependent skews in the abundance of positives in nature and in the yields/costs for correct/incorrect clas...

The ROC (Receiver Operating Chracteristic) curves are frequently used for different diagnostic purposes. There are several different approaches how to find the suitable estimate of the ROC curve in binormal model. The effective methods which can be used when the sample sizes are small are still very demanded in different applications. In the paper the binormal model is assumed and the parametri...

BACKGROUND A 36-item version of the Response Inventory for Stressful Life Events (RISLE) was derived from the longer 100 item version. The 36-item version may be more appropriate for use in larger population sample. OBJECTIVE To compare the responses of the 36-item RISLE to interview derived psychiatric diagnoses and suicidal ideation in a sub-sample of the general population and student samp...

The rapid advancement in molecule technology has led to the discovery of many markers that have potential applications in disease diagnosis and prognosis. In a prospective cohort study, information on a panel of biomarkers as well as the disease status for a patient are routinely collected over time. Such information is useful to predict patients' prognosis and select patients for targeted ther...

OBJECTIVE To apply ROC analysis to select the best threshold scores for the PHQ and SRQ; to compare the sensitivity and specificity of the PHQ and SRQ against a criterion diagnosis of depressive disorder in a community sample in rural Pakistan, and to examine the influence of socio-demographic factors on misclassification. METHODS The study used a two-stage design. Receiver Operating Characte...

The current document describes the methodology adopted for finding the optimal thresholds for ‘cumulative sequence count' and 'overlap percentage' using ROC curves. For each of the four training data sets, i-rDNA program was executed using various pairs of thresholds for cumulative sequence count and overlap percentage. For each pair of thresholds, the True Positive Rate and the False Positive ...

PURPOSE This study evaluated the predictive performance of a combination of self-report questionnaires, salivary hemoglobin levels, and age as a non-invasive screening method for periodontitis. METHODS The periodontitis status of 202 adults was examined using salivary hemoglobin levels, responses to 10 questions on a self-report questionnaire, and the Community Periodontal Index (CPI). The ab...

OBJECTIVE To determine a high fear cut-off point score for the Dental Fear Survey (DFS) using a single-item self-report questionnaire. METHODS The DFS, a 20-item questionnaire assessing fear of dental treatment, was completed by 1,256 participants with a mean age of 22.3 years (SD = 5.1). Another self-report questionnaire was used to collect data on previous dental experiences. A high fear cu...

BACKGROUND The aim of this study was to propose and validate a new clinical score to predict difficult ventilation through a supraglottic airway device. METHODS The score was proposed from our previously reported derivation data, and we prospectively validated the score in 5532 patients from November 2013 to April 2014. Predictive accuracy of the score was compared by the area under the recei...