Community Medicine (PSM) · Demography and Health Indicators

In a life table, the column 'Tx' represents:

  • A The number of persons surviving to exact age x
  • B The probability of dying between age x and x+1
  • C The total number of person-years lived after exact age x
  • D The life expectancy at age x
Correct answer: C. The total number of person-years lived after exact age x

Explanation

In a life table, Tx represents the total number of person-years lived by the cohort after exact age x. It is calculated by summing the Lx values (person-years lived between ages) from age x to the end of the table. Lx represents person-years lived between age x and x+1, lx represents survivors to exact age x, and ex represents life expectancy at age x.

Reference: Park's Textbook of Preventive and Social Medicine, 26th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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