the common green lacewing is an important natural enemy used for pest control in greenhouses. it is also very common in many agricultural systems. hence, studying lethal and sublethal effects of insecticides on this predator would be useful. toxicity of endosulfan, imidacloprid and indoxacarb was assessed on 1st instar larvae of chrysoperla carnea (stephens) in laboratory. residual bioassays we...

Recent literature found that subjective survival expectations in the Health and Retirement Study (HRS) appear to be overly optimistic among older respondents compared to life table values and actual survival rates. This paper argues that a significant portion of this bias is due to measurement error as opposed to biases in survival beliefs. HRS asks about the subjective probability of living ~1...

Cigarette smoking is associated with an increased risk of leukemia; benzene, an established leukemogen, is present in cigarette smoke. By combining epidemiologic data on the health effects of smoking with risk assessment techniques for low-dose extrapolation, we assessed the proportion of smoking-induced total leukemia and acute myeloid leukemia (AML) attributable to the benzene in cigarette sm...

In this paper, we consider Bayesian estimation and model determination for two-way contingency tables. The analysis is based on partitioning the parameter space of a saturated log-linear model into parameter subspaces identiied by considering the natural symmetries of the data. Prior distributions may then be chosen to respect invariance restrictions required by the available prior information....

The recent epidemiologic and clinical literature is filled with studies evaluating statistical models for predicting disease or some other adverse event. Risk stratification tables are a new way to evaluate the benefit of adding a new risk marker to a risk prediction model that includes an established set of markers. This approach involves cross-tabulating risk predictions from models with and ...

Large contingency tables summarizing categorical variables arise in many areas. One example is in biology, where large numbers of biomarkers are cross-tabulated according to their discrete expression level. Interactions of the variables are of great interest and are generally studied with log-linear models. The structure of a log-linear model can be visually represented by a graph from which th...

objective: in order to find how rating the whoqol-bref and dass scales are combined to produce an overall measure of quality of life and satisfaction with health rating, a qol-dass model was designed; and the strength of this hypothesized model was examined using the structural equation modeling. method: participants included a sample of 103 voluntary males who were divided into two groups of u...

the side-effects of amitraz, buprofezin and propargite were studied on encarsia formosa (gahan)in the laboratory, using a life table response experiment and the iobc system for their toxicity. bioassayswere conducted by dipping bean leaves containing third instar nymphs of the whitefly trialeurodesvaporariorum (westwood), parasitized by e. formosa, in insecticide solutions or caging adult paras...

Pulmonary embolism (PE) is a common life threatening condition in daily practice. Incidence of PE has been reported to be 112.3 cases per 100,000 patients [1,2]. Several prognostic models have been examined in patients with acute PE. The Pulmonary Embolism Severity Index (PESI) and the simplified PESI (sPESI) are among the most well studied models. sPESI scoring system is shown in Table 1. Othe...