There appeared to be a slight tendency to round to the nearest 5 kg for self-reported weight measurements when comparing the frequency of weights ending in 0 or 5 in the primary questionnaire (35%) and secondary questionnaire (31%), compared with weights measured by medical staff (25%).
Participants in the trial were asked to complete four questionnaires during the study including a validated 23-item primary questionnaire, completed at baseline and all postbaseline study visits.
The primary questionnaire included questions on hormonal and reproductive factors, smoking, alcohol, diet, height, weight, physical activity, self-reported health and some diseases and medications, socioeconomic factors, and sun tanning habits.
Height and weight were self-reported in the primary questionnaire, but could be either self-reported or measured at the secondary questionnaire, and the participants were asked to indicate whether they had been measured by medical staff on the day of the blood sample.
The primary questionnaire was developed in isiXhosa to ensure face validity, and then translated into English and seSotho.
This secondary questionnaire collected information that could influence biomarker measurements and updated some of the information from the primary questionnaire, eg, fasting status, menstruation/menopausal status, smoking, height, weight, use of dietary supplements, and medications taken in the previous 7 days.
# Missing 17: seven floor layers and nine graphic designers did not answer the KOOS questionnaire, and one did not respond on all the questions in the primary questionnaire.
The participation rate was 84%89.2%2% for the cases and 77.7% for the non-cases according to the primary questionnaire definition).
48 The primary questionnaire will consist of open-ended questions designed to elicit opinions about pharmacotherapeutics and quality use of medicines for people living with dementia.
To limit the time between repeated questionnaires, this study includes the 1,837 women from the random subsample who were asked for and provided a blood sample within 1 year of their primary questionnaire.
