october 14th

“Special” rates:
• Age Specific Fertility Rates (ASFRs)
• Age Specific Mortality Rates (ASMRs)
Age Specific Fertility Rates
Example: births to 32 year old US residents in 2009
(mid. Year population of female 32 year old US residents in 2009)
f (32, 2009)- regular mathematical notation
1f32 (2006)- demographers’ notation
f- Fertility rate
1 –age interval
32 –age interval
Example: births to 25-29 year old Arizona residents in 2009
mid. Year old of 25-29 females Arizona residents in 2009

5f25 az (2009)
F – fertility
5 – age interval
25 - age interval

births

Eg. Area=averge #ofbirths betw. 25th =30th birthdays.

years
15 20 25 30 35 40 45 50

Width 5x5f15 +5x5f20+……………x5x5f45 =5 [5f15+5f20+……5f45]=Total Fertility Rate (TFR)
Age Specific Mortality Rates
1m 59 (2007)
m- mortality
1 – interval
59 – age of people who died in one year
1m59 (2007) = #deaths to 59 year olds in 2007
mid.year population of 59 year olds in 2007
Get registration at www.mortality.org