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Table 2 Time trends in educational differences of overweight and obesity among nulliparous women in Sweden

From: The educational gradient of obesity increases among Swedish pregnant women: a register-based study

  1992-1995 1996-1998 1999-2001 2002-2004 2005-2007 2008-2010
n(nulliparas) 138,713 87,809 91,825 107,112 114,122 129,717
Overweight (25.0-29.9 kg/m2)
  Alla 18.3 (18.0-18.6) 21.0 (20.6-21.3) 22.3 (22.0-22.7) 22.7 (22.4-23.0) 22.7 (22.4-23.0) 22.6 (22.3-22.8)
  High educationa 16.1 (15.7-16.5) 18.7 (18.3-19.2) 20.3 (19.9-20.7) 20.6 (20.2-21.0) 20.9 (20.6-21.3) 20.9 (20.6-21.3)
  Low educationa 20.6 (20.2-21.1) 23.6 (23.0-24.1) 24.8 (24.3-25.4) 25.6 (25.2-26.1) 25.4 (24.9-25.8) 25.6 (25.1-26.0)
Obesity (≥30.0 kg/m2)
  Alla 5.1 (4.9-5.3) 6.7 (6.5-6.9) 7.8 (7.6-8.0) 8.8 (8.6-9.0) 9.3 (9.1-9.5) 9.6 (9.4-9.8)
  High educationa 3.6 (3.4-3.8) 4.7 (4.4-4.9) 5.9 (5.6-6.1) 6.4 (6.2-6.7) 7.0 (6.8-7.2) 7.1 (6.9-7.3)
  Low educationa 6.7 (6.4-7.0) 8.9 (8.5-9.3) 10.2 (9.8-10.5) 12.1 (11.7-12.4) 12.9 (12.6-13.3) 13.8 (13.4-14.1)
  1. aAge-standardized prevalence (%) and 95% confidence interval.
  2. BMI was assessed at the first visit to the antenatal-care clinic.