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4 results

  • Reliability and validity of an FFQ for South American children and adolescents from the SAYCARE study
  • Tara Rendo-Urteaga, Luisa Saravia, Tatiana Sadalla Collese, Julia María Monsalve-Alvarez, Laura Inés González-Zapata, Florencia Tello, Beatriz Martínez-Oliván, Francisco Leonardo Torres-Leal, Luis A Moreno, Augusto César Ferreira De Moraes, Heráclito Barbosa Carvalho
  • Journal: Public Health Nutrition , First View
  • Published online by Cambridge University Press: 12 September 2019, pp. 1-9
  • View abstract
    Objective:

    The purpose of this study was to analyse the reliability and validity of a semi-quantitative FFQ to assess food group consumption in South American children and adolescents.

    Design:

    The SAYCARE (South American Youth/Child cARdiovascular and Environmental) study is an observational, multicentre, feasibility study performed in a sample of 3- to 18-year-old children and adolescents attending private and public schools from six South American countries. Participants answered the FFQ twice with a two-week interval and three 24-h dietary recalls. Intraclass and Spearman’s correlations, weighted Cohen’s kappa (κw), percentage of agreement and energy-adjusted Pearson’s correlation coefficients were calculated.

    Setting:

    Seven cities in South America (Buenos Aires, Lima, Medelin, Montevideo, Santiago, Sao Paulo and Teresina).

    Subjects:

    A sample of 200 children and 244 adolescents for reliability analyses and 252 children and 244 adolescents for validity analyses were included.

    Results:

    Depending on the food group, for children and adolescents, reliability analyses resulted in Spearman’s coefficients from 0·47 to 0·73, intraclass correlation coefficients from 0·66 to 0·99, κw coefficients from 0·35 to 0·63, and percentage of agreement between 72·75 and 83·52 %. In the same way, validity analyses resulted in Spearman’s coefficients from 0·17 to 0·37, energy-adjusted Pearson’s coefficients from 0·17 to 0·61, κw coefficients from 0·09 to 0·24, and percentages of agreement between 45·79 and 67·06 %.

    Conclusion:

    The SAYCARE FFQ achieved reasonable reliability and slight-moderate validity for almost all food groups intakes. Accordingly, it can be used for the purpose of ranking the intake of individuals within a population.

  • Effective use of ontologies in software measurement
  • Félix García, Francisco Ruiz, Coral Calero, Manuel F. Bertoa, Antonio Vallecillo, Beatriz Mora, Mario Piattini
  • Journal: The Knowledge Engineering Review / Volume 24 / Issue 1 / March 2009
  • Published online by Cambridge University Press: 01 March 2009, pp. 23-40
  • Print publication: March 2009
  • View abstract

    Ontologies are frequently used in the context of software and technology engineering. These can be grouped into two main categories, depending on whether they are used to describe the knowledge of a domain (domain ontologies) or whether they are used as software artifacts in software development processes. This paper presents some experiences and lessons learnt from the effective use of an ontology for Software Measurement, called software measurement ontology (SMO). The SMO was developed some years ago as a result of a thorough analysis of the software measurement domain. Its use as a domain ontology is presented first, a description of how the SMO can serve as a conceptual basis for comparing international standards related to software measurement. Second, the paper describes several examples of the applications of SMO as a software artifact. In particular, we show how the SMO can be instantiated to define a data quality model for Web portals, and also how it can be used to define a Domain-Specific Language (DSL) for measuring software entities. These examples show the significant role that ontologies can play as software artifacts in the realm of model-driven engineering and domain-specific modeling.