The following questions are based on the study by Ladabaum et al. (2014). Q1(a) Is this study based on a cross-sectional survey design, a cohort study design, or a randomised controlled trial design?...

The following questions are based on the study by Ladabaum et al. (2014).
Q1(a) Is this study based on a cross-sectional survey design, a cohort study design, or a randomised controlled trial design? (1 mark)
Q1(b) Participants were grouped into three levels of leisure-time physical activity: ideal, intermediate, and none. What type of measurement scale is this? (1 mark)
Q1(c) Anthropometric measures included height, weight and waist circumference. What type of measurement scales were used to measure (i) height (in cm) and (ii) weight (in kg)? (iii) The researchers measured waist circumference (in cm) and then stated that “Abdominal obesity was defined based on a waist circumference of >88 cm for women and >102 cm for men”. What type of measurement scale was “abdominal obesity”?