Following are the important statistical indices of a country's
health status

(1) Crude birth-rate.
(ii) Crude death-rate.
(iii) Specific death-rates.
(iv) Standardised death-rates.
(v) Proportional mortality-rate.
(vi) Age proportional mortality rates.
(vii) Maternal mortality-rate.
(viii) Infant mortality-rate.
(ix) Neo-natal and post-neonatal mortality-rates.
(x) Percentage of low birth-weight babies.
(xi) Perinatal mortality-rate.
(xii) Pre-school child mortality-rate.
(xiii) Life expectancy.
(xiv) Disability days.
(xv) Sullivan's index.
(xvi) Physical quality of life index.
(xvii) Disability adjusted life years.
(xviii) Blindness incidence rate.
(xix) Human development index.

MAINTENANCE OF HEALTH

 Health maintenance is the preventive, curative, restorative and
promotive service provided by the official and non-official agencies
of a country to its citizens. Health maintenance is the job not of a
single man, but of a large number of paramedical and allied workers.
They work not in isolation but together as a team. Until the British