Control group
Pregnant women were informed that they were the control group and sent a pre-program questionnaire that was later collected. A second questionnaires was then mailed out at around 33–36 weeks of pregnancy to be completed and returned, which was around the time when the intervention group would have finished their CBT sessions. The researcher asked the control group participants to contact her when they were going to give birth; if they did not, the researcher determined the expected delivery date and sent an email. At around 1 month postpartum, a postpartum questionnaire was mailed to participants and later collected. Control group participants then received the CBT pamphlet used for the intervention group via mail.