Page 68 - NG2022_merged

Formula:

45
S −

15 +  5 5 X 50 S 50
=
SMAM = X 15
−
1 S 50
Where:
SMAM: Singulate mean age at marriage.

5SX: Proportion of single age in 5-year interval of age: x -> x+5.

S50: Proportion of single age at the age of 50 years old and S50 is calculated
by average value of 5S45 và 5S50.
Number of divorce cases is the number of cases which have been addressed
for couples to get divorce by the Court of first instance under the Law on
Marriage and Family.

To ensure statistical analysis meaning, this indicator is calculated through the
divorce proportion.

Formula:
Proportion of divorce = The number of divorce cases × 1000
(‰) Average population

Average age of divorce

The population’s average age of divorce is the arithmetic mean age of all
individuals whose divorce events occurred during the reporting period.

Formula:

Average age = Total age of divorced persons
of divorce Total number of divorced persons

The rate of under-5 children registered with birth certificate

Under-5 children registered with birth certificate are the number of children
under 5 years old counted at their date of birth certificated and granted with birth
certificate in accordance with the Law on Civil Status.

The rate of under-5 children registered with birth certificate is the percentage
of the number of under-5 children registered with birth certificate to the total
number of under-5 children in the reporting period.

67