Table 3: Characteristics of the women in the 2 groups.

Preemptive* ( )Control* ( )

Mean age year (SD)32.2 (4.7)31.3 (3.2)0.37
BMI (SD)25.2 (5.7)27.3 (6.6)0.2
Some associated medical conditions
 Motion sickness74N.S.
 Acid reflux/indigestion2327N.S.
 Depression/anxiety8160.04
 Low iron/anemia159N.S.
 Headaches/migraines5170.01
 HG in previous pregnancy20110.07

*Mean # of followup per patient in each group: 8 (SD 1.8).