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Table 3 Crude and age-adjusted prevalence of GDM and pre-existing diabetes for all years (n = 427,058) and for the most recent year of data (2009; n = 51,231), by ethnicity, Alberta, Canada

From: Diabetes in pregnancy among First Nations women in Alberta, Canada: a retrospective analysis

  First Nations Non-First Nations Rate ratio* P-value
Crude     
GDM (all years) 4.3 (4.3-4.4) 3.8 (3.8-3.9) 1.1 <0.001
GDM (2009) 4.9 (4.2-4.6) 4.8 (4.6-5.0) 1.0 0.861
Pre-existing diabetes (all years) 1.0 (1.0-1.1) 0.6 (0.6-0.7) 1.7 <0.001
Pre-existing diabetes (2009) 1.1 (0.8-1.5) 0.7 (0.6-0.8) 1.6 0.006
Age-adjusted     
GDM (all years) 6.1 (6.0-6.1) 3.8 (3.7-3.9) 1.6 <0.001
GDM (2009) 6.9 (6.8-6.9) 4.6 (4.6-4.7) 1.5 <0.001
Pre-existing diabetes (all years) 1.5 (1.4-1.5) 0.6 (0.6-0.6) 2.5 <0.001
Pre-existing diabetes (2009) 1.4 (1.3-1.4) 0.7 (0.6-0.7) 2.0 <0.001
  1. Data presented are percentage (95% confidence interval).
  2. GDM, gestational diabetes mellitus.
  3. *First Nations-to-non-First Nations.