In the first questionnaire in the Swedish Mammography Cohort the categories were prespecified, but in the second questionnaire and the one used in the Cohort of Swedish Men, participants could fill in the exact number of servings of the dairy products (milk, fermented milk, yogurt, and cheese) they consumed a day or a week. (bmj.com)
In the Australian cohort the post partum questionnaire was sent to 121 women after the exclusion of 45 women who did not respond to the first questionnaire, one foetal death and one participation withdrawal, leaving 91 women who responded. (bmcpregnancychildbirth.biomedcentral.com)
At two months post partum a follow - up questionnaire was sent to 386 Swedish women, after exclusion of two intrauterine deaths, one very sick baby, two who withdrew participation and 127 who did not respond to the two first questionnaires. (bmcpregnancychildbirth.biomedcentral.com)