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Table 2 Univariable and multivariable analysis of factors associated with impaired glucose tolerance (IGT), gestational diabetes mellitus (GDM) and type 2 diabetes.

From: Increased incidence of glucose disorders during pregnancy is not explained by pre-pregnancy obesity in London, Canada

   Univariable Multivariable Multivariable + BMI Multivariable + BMI + Excessive Weight Gain
Year IGT 1.65 (1.12-2.43) 1.65 (1.12-2.43) 2.09 (1.36-3.20) 2.09 (1.36-3.20)
  GDM 1.52 (1.25-1.83) 1.52 (1.12-2.43) 1.68 (1.35-2.10) 1.68 (1.35-2.10)
  Type 2 2.06 (1.29-3.27) 2.07 (1.30-3.28) 2.33 (1.38-3.92) 2.34 (1.39-3.94)
Maternal Age (≥35 vs. <35) IGT 1.50 (1.13-1.96) 1.60 (1.22-2.10) 1.40 (1.03-1.9) 1.40 (1.03-1.9)
  GDM 2.46 (2.18-2.77) 2.39 (2.12-2.70) 2.31 (2.01-2.66) 2.31 (2.0-2.65)
  Type 2 2.11 (1.58-2.83) 2.07 (1.54-2.79) 1.97 (1.41-2.76) 1.99 (1.42-2.79)
Parity (≥ 1 vs. 0) IGT 0.82 (0.66-1.03) 0.77 (0.61-0.96) 0.75 (0.58-0.96) 0.75 (0.58-0.96)
  GDM 1.31 (1.17-1.46) 1.13 (1.01-1.27) 0.95 (0.83-1.08) 0.94 (0.83-1.08)
  Type 2 1.23 (0.94-1.61) 1.10 (0.84-1.44) 0.91 (0.67-1.23) 0.93 (0.69-1.26)
BMI (25.0-29.9 vs. <25.0) IGT 2.22 (1.69-2.94)   2.24 (1.69-2.92) 2.24 (1.69-2.96)
  GDM 2.58 (2.21-3.03)   2.52 (2.15-2.96) 2.52 (2.15-2.96)
  Type 2 2.54 (1.67-3.61)   2.41 (1.64-3.55) 2.41 (1.64-3.55)
BMI: (≥30.0 vs. <25.0) IGT 2.65 (1.95-3.6)   2.68 (1.97-3.65) 2.68 (1.97-3.65)
  GDM 5.50 (4.74-6.39)   5.43 (4.67-6.31) 5.39 (4.63-6.27)
  Type 2 6.03 (4.26-8.54)   5.96 (4.21-8.44) 6.11 (4.30-8.67)
Excessive Weight Gain (> 20 kg) IGT 1.06 (0.75-1.48)    1.00 (0.70-1.42)
  GDM 0.77 (0.64-0.92)    0.91 (0.74-1.11)
  Type 2 1.16 (0.79-1.71)    1.36 (0.90-2.05)
  1. Multivariable analysis includes year, maternal age and parity.
  2. Multivariable + BMI analysis includes year, maternal age, parity and BMI.
  3. Predictive factors were entered in a blockwise fashion in order to allow for a careful examination of the relative contributions of each predictive factor to the relationship between year and MGDs. Year, maternal age and parity were entered in the first block, BMI in the second block and excessive weight gain in the third block.