Table 2

Maternal characteristics stratified in the TGCS groups 1–5

Body mass index >30 (%)Maternal age >35 years (%)
SUHNMHSLOSUHNMHSLO
Group 15.38.15.15.216.76.3
Group 2a10.312.711.010.725.48.1
Group 2b9.811.211.621.746.723.4
Group 36.111.48.218.537.320.5
Group 4a12.616.114.923.045.923.7
Group 4b16.714.316.632.857.127.8
Group 511.619.114.826.746.223.8
  • NMH, National Maternity Hospital 2011; SLO, Slovenian National Perinatal Database 2007–2011; SUH, Stavanger University Hospital 2010–2011; TGCS, 1-Group Classification System.