Crude and age-standardised prevalence of GDM by year of delivery and denominator, Victoria 1999–2008
| GDM/all pregnancies (%) | GDM/all pregnancies less pre-existing (%) | All forms of diabetes in pregnancy (%) | ||||||
|---|---|---|---|---|---|---|---|---|
| Year | n (all births) | n (GDM) | Crude | Age-standardised | Crude | Age-standardised* | Crude | Age-standardised |
| 1999 | 60 424 | 2356 | 3.90 | 4.10 (3.94–4.26) | 3.91 | 4.11 (3.95–4.28) | 4.27 | 4.48 (4.31–4.65) |
| 2000 | 60 431 | 2548 | 4.22 | 4.38 (4.21–4.55) | 4.23 | 4.39 (4.23–4.56) | 4.56 | 4.73 (4.56–4.90) |
| 2001 | 59 997 | 2593 | 4.32 | 4.43 (4.26–4.60) | 4.34 | 4.45 (4.28–4.61) | 4.71 | 4.82 (4.65–5.00) |
| 2002 | 60 847 | 2752 | 4.52 | 4.58 (4.41–4.74) | 4.54 | 4.59 (4.43–4.76) | 4.95 | 5.00 (4.83–5.18) |
| 2003 | 61 111 | 2611 | 4.27 | 4.29 (4.13–4.46) | 4.29 | 4.31 (4.15–4.47) | 4.71 | 4.73 (4.56–4.90) |
| 2004 | 61 283 | 2547 | 4.16 | 4.13 (3.97–4.29) | 4.17 | 4.15 (3.99–4.31) | 4.61 | 4.58 (4.42–4.75) |
| 2005 | 64 022 | 3027 | 4.73 | 4.66 (4.50–4.83) | 4.75 | 4.69 (4.52–4.85) | 5.24 | 5.17 (5.00–5.34) |
| 2006 | 67 150 | 3295 | 4.91 | 4.82 (4.66–4.98) | 4.93 | 4.85 (4.69–5.01) | 5.43 | 5.34 (5.17–5.51) |
| 2007 | 69 738 | 3559 | 5.10 | 4.98 (4.82–5.14) | 5.13 | 5.01 (4.85–5.17) | 5.67 | 5.53 (5.37–5.70) |
| 2008 | 69 929 | 3859 | 5.52 | 5.37 (5.21–5.54) | 5.55 | 5.40 (5.24–5.57) | 6.12 | 5.96 (5.78–6.13) |
*Age-standardised to the age structure of the entire study population for the 10 year period, excluding those with pre-existing diabetes.