Figure 2.  Comparison between obstetricians in practice for < 10 years and those in practice for > 10 years on their ratings of the extent to which regular aerobic exercise can reduce the risk of preeclampsia. Responses were made on a 7- point Likert scale where 1 was equated to "not at all" and 7 was equated to "quite a lot". The difference between the two groups was significant (p = 0.052).