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Table 1 Maternal socio-demographic, health and lifestyle characteristics for whom information on diabetes status was available

From: Prevalence of gestational diabetes according to commonly used data sources: an observational study

Maternal characteristic

Growing up in New Zealand (n = 6818)

National Minimum Dataseta (n = 42,066)

n (%)

n (%)

Age group (years)

  < 20

329 (4.8%)

2437 (5.8%)

 20–24

998 (14.6%)

7715 (18.3%)

 25–29

1666 (24.4%)

10,515 (25.0%)

 30–34

2121 (31.1%)

11,520 (27.4%)

 35–39

1419 (20.8%)

7750 (18.4%)

 40 and over

285 (4.2%)

2129 (5.1%)

Self-prioritised ethnicity

 European

3608 (53.0%)

15,054 (35.8%)

 Māori

950 (14.0%)

10,182 (24.2%)

 Pacific

1001 (14.7%)

9355 (22.2%)

 Asian

1003 (14.7%)

6498 (15.4%)

 Other

241 (3.5%)

965 (2.3%)

Socioeconomic deprivation decile

 1 to 2 (least deprived)

1099 (16.1%)

 

 3 to 4

1235 (18.1%)

 

 5 to 6

1168 (17.1%)

 

 7 to 8

1426 (20.9%)

 

 9 to 10 (most deprived)

1888 (27.7%)

 

Highest level of education

 No secondary school

491 (7.2%)

 

 Secondary school / NCEA 1–4

1627 (23.9%)

 

 Diploma/Trade certificate / NCEA 5–6

2082 (30.5%)

 

 Bachelor’s degree

1539 (22.6%)

 

 Higher degree

1064 (15.6%)

 

DHB of domicile

 ADHB

2423 (35.5%)

13,566 (32.2%)

 CMDHB

2526 (37.0%)

17,335 (41.2%)

 WDHB

1869 (27.4%)

11,165 (26.5%)

Parity

 First child

2852 (41.8%)

 

Pregnancy planning

 Planned

4091 (60.2%)

 

Pre-pregnancy BMI (kg/m2)

  < 18.5

256 (4.7%)

 

 18.5–24.9

3261 (54.6%)

 

 25–29.9

1349 (22.6%)

 

 30 and over

1105 (18.5%)

 
  1. Data are presented as number of participants and percentages unless otherwise indicated, missing values have not been included in the column %
  2. n number, ADHB Auckland District Health Board, CMDHB Counties Manukau District Health Board, WDHB Waikato District Health Board, NCEA National Certificate of Educational Achievement, DHB District Health Board, BMI Body Mass Index
  3. aData from the National Minimum Dataset for women from areas serviced by ADHB, CMDHB and WDHB for 2009 and 2010 combined to match the period and geographical area in which women were recruited to the Growing Up in New Zealand study