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Field Detail
Theme Health
Code PH-VS-1.5
Sub-theme Vital Statistics
Name Life expectancy at age 40 (e/40)
Definition Describes number of years person can expect to live after having reached 40 years of age, if they were to continue to experience mortality conditions prevailing at the time. Reported separately by sex
Calculation/Formula Calculated from life tables
Unit of Measure Years
Limitations Should be measured over 3 -5 year aggregate periods with 95% confidence intervals to minimise instability due to the small number of events. Indicator should be reported separately for Males and Females as causes of death (and therefore mortality patterns) often differ markedly by sex.
Purpose/Rationale Complementing the more standard life‐expectancy at birth, this indicator provides a more robust indication of “true” adult mortality, particularly in developing countries which may have experienced (a) major improvements in infant health, but at the same time witnessed major changes in NCDs.
Policy Linkages NCD control plans
Preferred Data Sources National Vital Registration System - (which has been verified for completeness) or National Health Information System
Alternative_Data Sources Indirectly: from censuses/ surveys (questions on infants deaths in last 12 months, and application of life‐table analysis). Census and HH surveys (5‐10 year intervals).
Census - HIES - DHS tag Census/DHS
Primary Data Collection System National Administrative Database - Health Information Management Systems (HIS)
Frequency of Data Collection Annual (aggregated over multiple years) if from vital registration data/ 5-10 years if from Census
Other agencies countries_ must report to: CHIPS
SPC Responsibility - Data Management SDP
Comments / Regional Trend Analysis As countries improve vital statistics and civil registration systems, there may be some increases in published measures of mortality (such as IMR) due to improvements in reporting rather than a true increase in mortality rate. Care must be taken in inter
SPC Programme PHD