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the research team. Skin-fold measurements are encouraged but optional. (Refer to PART 5.5: Physical
and Biological Measurement Protocol below).
As an in-depth study, a small subset of 200 students across all schools will be selected to complete a
previous day physical activity recall (PDPAR) and 24-hour food and beverage recall (optional). Sites
will randomly select classrooms across all participating schools from a subset of students whose
parents have agreed to their participation. These students will take these surveys home to be
completed with the assistant of an adult household member.
As mentioned previously, staff from each of the selected schools will be asked to complete the Adult
Core Module and Workplace Module.
5. Data Collection: Physical and Biological Measurements
Introduction
To assess relationships between physical health and interventions targeting unhealthy diet, physical
inactivity, and tobacco use, CIH includes a Biometric Study, in which physical and biological
measurements for participants in both the intervention and control communities will be collected. The
Biometric Study is based on the World Health Organisation’s STEPwise approach (STEPS) and the
INTER-HEART global study of risk factors for acute myocardial infarctions.
While the physical measurements for the study are non-invasive, the biological measurements rely on
blood specimens collected on test strips using rapid screening tools. The only addition to the STEPS
measures for this study is the introduction of the skin-fold calliper as a tool to measure body fat.
Procedures for the collection of physical and biological measurement follow those outlined in the
STEPS Manual 15 and the INTER-HEART study protocol 16. Measurements for this study correspond
with those for the Expanded STEPS protocol. Skin-fold procedures are noted below.
Once collected, physical and biological measurements will be matched to completed participant
surveys or interviews using unique identifiers assigned based on the relevant administration protocol.
Staff collecting the physical and biological measurements will record measurements using the
participants’ unique identifiers on the data recording forms provided.
Physical Measurements
All forms must be labelled appropriately to ensure all results and samples can be linked with surveys
and biological measurement forms (see PART 5.3: Preparation of the Data Collection Tools).
Sequence of tests
Physical measurements should be conducted prior to drawing blood for biological measurements.
Physical measurements should be taken from the participant in the following order:
•
Height
•
Weight
15
World Health Organization. 2006. STEPS User Manual. The most relevant information for the physical and biological
measurements may be found in Part 3, Sections 4 and 5.
16
INTER-HEART 2001 Instruction Manual. The most relevant information for the physical measurements may be found in
section 5 page 22.
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