421 individuals declined to participate and 304 individuals could
not be contacted by the research team because of phone numbers
that were out of service or because of incorrect contact information;
177 individuals were eligible but did not show up for
the enrollment visit, and 196 individuals were ineligible. In full,
401 participants were randomly assigned into the intervention
(n = 201) and control groups (n = 200), including 200 OW/OB
and 201 NW subjects. The 2 study groups did not significantly
differ on key baseline measures (Table 1). With the exclusion of
subjects with miscarriages (n = 6), 94.9% (n = 375) of participants
attended the 30-wk assessment visit (188 intervention and
187 control subjects), and 82% (n = 320) of participants attended
the 6-mo postpartum assessment (159 intervention and
161 control subjects). Completers (n = 320) of the 6-mo postpartum
assessment were significantly older (29.1 6 5.1 compared
with 27.16 5.8 y; P = 0.005) than noncompleters (n = 75), but no
other significant differences were shown.