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Reference metadata describe statistical concepts and methodologies used for the collection and generation of data. They provide information on data quality and, since they are strongly content-oriented, assist users in interpreting the data. Reference metadata, unlike structural metadata, can be decoupled from the data.

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Healthy life years by sex (from 2004 onwards) (hlth_hlye)

Reference Metadata in Euro SDMX Metadata Structure (ESMS)

Compiling agency: Eurostat, the statistical office of the European Union

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We know people are living longer. However, do we live longer and better or do we gain only years of life in bad health?

The indicator of healthy life years (HLY) measures the number of remaining years that a person of specific age is expected to live without any severe or moderate health problems. The notion of health problem for Eurostat's HLY is reflecting a disability dimension and is based on a self-perceived question which aims to measure the extent of any limitations, for at least six months, because of a health problem that may have affected respondents as regards activities they usually do (the so-called GALI - Global Activity Limitation Instrument foreseen in the annual EU-SILC survey). The indicator is therefor also called disability-free life expectancy (DFLE). So, HLY is a composite indicator that combines mortality data with health status data.

HLY also monitor health as a productive or economic factor. An increase in healthy life years is one of the main goals for European health policy. And it would not only improve the situation of individuals but also result in lower levels of public health care expenditure. If healthy life years are increasing more rapidly than life expectancy, it means that people are living more years in better health.

Please note that a revision took place in March 2012: the whole series 2004-2010 were recalculated taking into account:

  • the use of the age at interview for the GALI prevalences instead of the age of the income period (as it is traditionally done for many income and living indicators); differences with the previous calculations on outcomes and trends are minimal
  • the latest versions of the EU-SILC and Mortality data
30 January 2020

Health expectancies are calculated using the Sullivan method which combines information on mortality and health status data.

1. Variables used for mortality component:

  • Age specific death rate (Mx)
  • Probability of dying between exact ages (qx)
  • Probability of surviving between exact ages (px)
  • Number left alive at given exact age (lx)
  • Person-years lived between exact age (Lx)
  • Life expectancy at given exact age (ex)

     For more information, please refer to metadata pages of Mortality (demo_mor) and Life table (demo_mlifetable).

2. Variable used for health status, in casu disability:

Variable PH030 (Limitation in activities people usually do because of health problems for at least the last 6 months) in EU Statistics on Income and Living Conditions (EU-SILC Survey).

The EU-SILC question is: for at least the past six months, to what extent have you been limited because of a health problem in activities people usually do? Would you say you have been:

  • severely limited?
  • limited but not severely?
  • not limited at all?

Based on this variable the proportions of the population in healthy (answer code: "not limited at all") and unhealthy conditions (answer codes: "severy limited" and "limited but not severely") are calculated by sex and age.

 

Statistical observations are individuals.

The whole EU population is covered.

European Union, EU Member States, United Kingdom, Iceland, Norway, Switzerland and Croatia

Reference year is defined as the calendar year.

The overall accuracy of HLY is considered to be high. However institutional households are not included in the EU-SILC. It is assumed that the population living in the private households covered by EU-SILC is representative for the total population.

Three types of indicators are presented in the table:

  • Number of years for Healthy Life Years
  • Number of years for Life Expectancy
  • Healthy life years expressed as a percentage of the Life Expectancy.

Those indicators can be calculated for women and men and at different ages (at birth, at 50, at 65)

See the annex on the Sullivan Method for the calculation

For the mortality part: demography statistics.

For the disability part: EU-SILC

See the relevant ESMS pages

Yearly.

For almost all countries the timeliness of the HLY indicators is around 15 months. Timeliness is different for disability and mortality data. Please consult timeliness in metadata pages of Income and Living conditions (ilc) and Mortality (demo_mor).

The HLY indicator is calculated using the same method (Sullivan's) for all countries.

Comparability is mainly determined by the comparability of the data sources.

EU-SILC is based on a common framework defined by harmonized lists of target primary and secondary variables, common concepts, a recommended design, common requirements (for imputation, weighting, sampling errors calculation) and classifications aiming at maximising comparability of the information produced. See the ESMS pages of SILC. The disability prevalence data used in the calculation of the Healthy life years (HLY) indicator are provided by the GALI (Global Activity Limitation Instrument) question from EU-SILC. The way this question was implemented by the EU Member States in EU-SILC might hamper cross-country comparisons. Not all countries followed the standard recommendation in the wording of the question as decided in the Minimum European Health Module and the European Health Interview Survey (EHIS).

Eurostat had assessed the wording of the national questions for the GALI and comparability flaws mid 2012 in collaboration with the national EU-SILC delegates. The results of this analysis are available in annex. Data values in the tables have been flagged accordingly to indicate breaks in series (methodological change) or to forward the user to check available information on partial non-comparability.

Examples of problems in the national questions found in the previous years are:

  • the 6 months period is considered as a reference period and not as the minimum duration of the limitation
  • the reference is to the respondent's own daily activities and not to the ones that people usually do
  • the use of 2 answer categories instead of 3
  • only persons who declare having a longstanding illness or health problem answer to this question instead of all persons irrespective of having or not a longstanding illness or health problem

The comparability for the mortality data, conducted as a joint demographic data collection in cooperation with United Nation Statistical Division (UNSD), is considered very high. See the ESMS pages of mortality.

The way the GALI (Global Activity Limitation Instrument) question was implemented by the EU Member States in EU-SILC hampers comparison in time for some countries. A detailed overview is in annex. See also the assessment exercise referred above.

Processing 2011 census data introduce a break in population series for following countries: SK, CZ, LV, LT, BG, PT, PL, CH and IE. For Cyprus this break occurred in 2010.

See also the ESMS pages of SILC and mortality.