Table 2

Body mass index of pre-pregnant women by different periods (1987–1989, 1996–1997, 2007–2010) and age groups in the Lithuanian urban area

Period
Age groups (years)1987–19891996–19972007–2010p Value
18–24 22.89±3.084 (22.60 to 23.19)21.34±2.78 (21.10 to 21.59)22.03±3.65 (21.57 to 22.48)<0.001, 1987–1989 vs 1996–1997
<0.001, 1987–1989 vs 2007–2010
0.004, 1996–1997 vs 2007–2010
25–34 24.63±3.91 (24.23 to 25.03)22.83±3.75 (22.48 to 23.19)23.02±4.26 (22.67 to 23.37)<0.001, 1987–1989 vs 1996–1997
<0.001, 1987–1989 vs 2007–2010
0.450, 1996–1997 vs 2007–2010
35–44 26.60±3.83 (25.59 to 27.62)23.86±3.24 (22.99 to 24.73)25.10±4.97 (24.26 to 25.95)0.002, 1987–1989 vs 1996–1997
0.068, 1987–1989 vs 2007–2010
0.055, 1996–1997 vs 2007–2010
  • Values are mean±SD (95% CI).