Elisabetta Petracci

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BACKGROUND Although modifiable risk factors have been included in previous models that estimate or project breast cancer risk, there remains a need to estimate the effects of changes in modifiable risk factors on the absolute risk of breast cancer. METHODS Using data from a case-control study of women in Italy (2569 case patients and 2588 control subjects(More)
To evaluate the effect of excess weight, lifestyle factors, and body image on HRQoL in a sample of school-aged children. Cross-sectional data of 4,338 thirteen-year-old children were collected in 2007 as part of the So.N.I.A project, a nutritional surveillance study in a northern Italian region. A two-stage sampling design was used in order to gain a Health(More)
Failures in the bonding of dental bracket are a big concern for orthodontists. Clinical experience suggests that some patients are more prone than others to experience failures. Therefore, it can be expected that in statistical analysis of orthodontic bracket failures, the usual assumption of independence between the observations is violated. An approach to(More)
PURPOSE We sought to explore the relationship between age-related cataract extraction and the metabolic syndrome or its various components separately and in various combinations in an Italian case-control study. METHODS A total of 761 cases and 1,522 controls in hospital for acute, non-neoplastic, non-ophthalmologic, non-metabolic diseases were(More)
The aim of the study is to highlight some key points of Italian fertility decline in the first decades of the twentieth century, by using a micro longitudinal approach. The research is based on new individual-longitudinal data and life-course histories from Granarolo, an Italian municipality bordering the town of Bologna. By using Cox models, hazards of(More)
We present a simple influence function based approach to compute the variances of estimates of absolute risk and functions of absolute risk. We apply this approach to criteria that assess the impact of changes in the risk factor distribution on absolute risk for an individual and at the population level. As an illustration we use an absolute risk prediction(More)
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