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  • 1. Growth Rates Preservation (GRP) temporal benchmarking: Drawbacks and alternative solutions Archived
    Articles and reports: 12-001-X201800154927
    Description:

    Benchmarking monthly or quarterly series to annual data is a common practice in many National Statistical Institutes. The benchmarking problem arises when time series data for the same target variable are measured at different frequencies and there is a need to remove discrepancies between the sums of the sub-annual values and their annual benchmarks. Several benchmarking methods are available in the literature. The Growth Rates Preservation (GRP) benchmarking procedure is often considered the best method. It is often claimed that this procedure is grounded on an ideal movement preservation principle. However, we show that there are important drawbacks to GRP, relevant for practical applications, that are unknown in the literature. Alternative benchmarking models will be considered that do not suffer from some of GRP’s side effects.

    Release date: 2018-06-21
  • 2. Analysis of trends in the prevalence of cannabis use in Canada, 1985 to 2015 Archived
    Articles and reports: 82-003-X201800254908
    Description:

    This study examined nine national surveys of the household population which collected information about drug use during the period from 1985 through 2015. These surveys are examined for comparability. The data are used to estimate past-year (current) cannabis use (total, and by sex and age). Based on the most comparable data, trends in use from 2004 through 2015 are estimated.

    Release date: 2018-02-21
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  • 1. Growth Rates Preservation (GRP) temporal benchmarking: Drawbacks and alternative solutions Archived
    Articles and reports: 12-001-X201800154927
    Description:

    Benchmarking monthly or quarterly series to annual data is a common practice in many National Statistical Institutes. The benchmarking problem arises when time series data for the same target variable are measured at different frequencies and there is a need to remove discrepancies between the sums of the sub-annual values and their annual benchmarks. Several benchmarking methods are available in the literature. The Growth Rates Preservation (GRP) benchmarking procedure is often considered the best method. It is often claimed that this procedure is grounded on an ideal movement preservation principle. However, we show that there are important drawbacks to GRP, relevant for practical applications, that are unknown in the literature. Alternative benchmarking models will be considered that do not suffer from some of GRP’s side effects.

    Release date: 2018-06-21
  • 2. Analysis of trends in the prevalence of cannabis use in Canada, 1985 to 2015 Archived
    Articles and reports: 82-003-X201800254908
    Description:

    This study examined nine national surveys of the household population which collected information about drug use during the period from 1985 through 2015. These surveys are examined for comparability. The data are used to estimate past-year (current) cannabis use (total, and by sex and age). Based on the most comparable data, trends in use from 2004 through 2015 are estimated.

    Release date: 2018-02-21
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