26th July 2019, Volume 132 Number 1499

Bryndl E Hohmann-Marriott

In New Zealand, as in most low-fertility countries, there has been an increase in the number of pregnant women with chronic health conditions.1,2 This is at least partly due to…

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Unplanned pregnancies can be a health risk for those with chronic health conditions such as diabetes, asthma and depression. In a study of about 7,000 pregnant women in New Zealand, I found that 15% had been diagnosed with a chronic health condition. Nearly half of the pregnancies of these women with chronic health conditions were unplanned. This was higher than the number of unplanned pregnancies among women without chronic health conditions.



Chronic health conditions can pose risks for pregnancy and childbearing which may be mitigated by preconception care and pregnancy planning. The objective of this study is to identify the proportion of pregnancies reported as unplanned among women in New Zealand with chronic health conditions and the co-occurrence of these pregnancies with socioeconomc disadvantage.


This study included 6,822 pregnant women in the Growing Up in New Zealand study. Nearly 15% identified a chronic health condition, including diabetes, heart disease, asthma, depression and anxiety.


Pregnancies were reported as unplanned by 45% of women with chronic health conditions, as compared to 39% of women without these conditions. Among women with chronic conditions, those who identified as Māori or Pacific Islander reported two-thirds of their pregnancies as unplanned, and those who were younger, had less education, were lower-income or did not have a co-resident partner reported between 50–80% of their pregnancies as unplanned.


Obstetricians and midwives in New Zealand should be prepared to provide care for women with chronic conditions who may have surprise pregnancies. Comprehensive family planning services, preconception care and systemwide reduction in health inequities are needed to help women with chronic health conditions enter pregnancy as healthy as possible.

Author Information

Bryndl E Hohmann-Marriott, Sociology, Gender Studies and Criminology, School of Social Sciences, University of Otago, Dunedin.


The author is grateful to the Growing Up in New Zealand team for access to the data.


Bryndl E Hohmann-Marriott, Sociology, Gender Studies and Criminology, School of Social Sciences, University of Otago, PO Box 56, Dunedin 9054.

Correspondence Email


Competing Interests



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