## HDSS Population Data

The available indicators in this group are sex ratio, proportion <15, proportion 15-49, and proportion 60+. We provide brief definitions below.

**Population**

Minimum time to be considered a resident varies from one HDSS to the other. For ease of cross-site and cross-year comparisons, all indicators are produced using a standard of six months to be considered a resident. Population is NOT the number of residents in the HDSS at a given date (beginning, mid, or end of the year).

**Sex ratio**Sex ratio is the ratio of males to females, i.e. the number of HDSS male residents divided by the number of HDSS female residents, expressed in number of males for 100 females.

**Proportion <15**

It is the number person-years lived before the 15th birthday divided by the total number of person-years.

**Proportion 15-59**

It is the number person-years lived between the 15th and 60th birthdays divided by the total number of person-years.

**Proportion 60+ **It is the number person-years lived after the 60th birthday divided by the total number of person-years.