Page 65 - niengiam2022

Formula:

45

S 
15   5 5 X 50 S 50

SMAM  X 15

1 S
50
Where:
SMAM: Singulate mean age at marriage;
5S X: Proportion of single age in 5-year interval of age: x -> x+5;

S 50: Proportion of single age at the age of 50 years old and S 50
is calculated by average value of 5S 45 và 5S 50.

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.

65