The aim of this study was to establish which cut-off point for the forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) ratio (i.e. fixed 0.70 or lower limit of normal (LLN) cut-off point) best predicts accelerated lung function decline and exacerbations in middle-aged smokers. We performed secondary analyses on the Lung Health Study dataset. 4045 smokers aged 35-60 years with mil...

Given a PFA A and a cut-point λ, the isolation problem asks if there is a bound > 0 such that the acceptance probability of every word is bounded away from λ by . In this paper we show that the isolation problem for PFAs with a unary input alphabet is (a) coNPcomplete, if the cut-point is 0 or 1, and (b) is in coNP and coNP-hard, if the cut-point is in (0, 1). We also show that the language con...

Opinion-based questionnaires on Likert scales are commonly used in assessing health care utilization, facilitating factors and barriers. There is a need to set up a cut-off point in them to arrive at a conclusion. It is also important to set up a cut-off point on overall items in Likert scalebased questionnaires used for assessing Knowledge, Attitude and Practice. In this article, we show how t...

BACKGROUND We recently reported, using a receiver operating characteristic area metric, the first meta-analytic comparison of the relative accuracy of cervical and anal cytology in detecting moderate or severe histopathologic lesions by magnification directed punch biopsy. The aim of the present research was to meta-analytically examine cut-point specific operating characteristics (sensitivity,...

Due to the importance of material classification issue in grinding circuits, the ‎performance of primary and secondary hydrocyclones in grinding circuit of Esfordi ‎phosphate plant was investigated by sampling within 7 days from feed, overflow, and ‎underflow‎ of these hydrocyclones. At first, the d80 of above streams samples were calculated by ‎the screening analysis. The results showed ‎that ...

A WHO expert consultation addressed the debate about interpretation of recommended body-mass index (BMI) cut-off points for determining overweight and obesity in Asian populations, and considered whether population-specific cut-off points for BMI are necessary. They reviewed scientific evidence that suggests that Asian populations have different associations between BMI, percentage of body fat,...

background cerebral state index (csi) is derived from electroencephalogram (eeg) and is used for monitoring the level of consciousness during anesthesia. this study was designed to investigate the accuracy of glasgow coma scale (gcs) and csi as a predictor of in-hospital mortality in patients with trauma brain injury (tbi). objective to compare the predictive value of gcs and csi for predicting...