Babies born in New Zealand by maternal age group



Each individual represented in the data is allocated to a single ethnic group, using the following priority system: Māori > Pacific peoples > Indian > Asian (excl. Indian) > Other > European. Individuals of European and of Other ethnicities are often grouped together and presented as being part of the 'European or Other' ethnic group due to small numbers in the 'Other' ethnic group.

Deprivation is derived according to the residence of the individual. Deprivation scores are based on the 2006 New Zealand Deprivation Index for women giving birth before 2010 and on the 2013 Deprivation Index for women giving birth from 2010 onwards.


Deprivation quintiles are based on the area of residence for the woman or baby. They range from 1 (least deprived) to 5 (most deprived), according to the 2006 New Zealand Deprivation Index. Approximately equal numbers of the population reside in areas associated with each of the five deprivation quintile areas.

Data calculation/treatment

This publication uses prioritised ethnicity, whereby each person represented in the data is allocated to a single ethnic group using the priority system Māori > Pacific peoples > Asian > European > Other. The aim of prioritisation is to ensure that where it is necessary to assign people to a single ethnic group, ethnic groups that are small or important in terms of policy are not swamped by the European ethnic group.

Data provided by

Ministry of Health

Dataset name

Report on Maternity 2015


How to find the data

At URL provided, select 'Downloads' from the right-hand column.

Import & extraction details

File as imported: Report on Maternity 2015

From the dataset Report on Maternity 2015, this data was extracted:

  • Sheet: Babies
  • Range: B8:G31
  • Provided: 120 data points

This data forms the table Maternity - Male and female babies, by maternal age group, baby ethnic goup and baby neighbourhood deprivation quintile 2015.

Dataset originally released on:

August 19, 2017

Purpose of collection

To provide annual health statistics about women giving birth, their pregnancy and childbirth experience and the characteristics of live-born babies in New Zealand.

Method of collection/Data provider

Population data for rate calculations was provided by Statistics New Zealand.