Study protocol: behaviour change intervention to promote healthy diet and physical activity in overweight/obese adults with diabetes attending health care facilities in Muscat: a cluster rendomised control trial

Table 2 Outcome measures for pre-specified variables

Primary Outcome	Tool	When to measure	Type of variable
Body weight (Kg)	Calibrated scales	B, 3F, 6F, 12F	continuous
^aHbA1c (%)	Blood test (fasting sample)	B, 3F, 6F, 12F	continuous
Secondary Outcomes
Socio-demographic data	Questionnaire	B	Binary / numerical
Height (m)	Stadiometer	B	continuous
Pedometer	Reporting step counts	B, 3F, 6F, 12F	numerical
GPAQ-MET-mins/week	Questionnaire	B, 3F, 6F, 12F	continuous
Diet assessment tool	Questionnaire	B, 3F, 6F, 12F	continuous
Lipid profile (mmol/l)	Blood test (venous fasted sample)	B, 3F, 6F, 12F	continuous
Blood pressure (mmHg)	Sphygmomanometer	B, 3F, 6F, 12F	continuous
Exit survey	Questionnaire (participants and project officers)	12F	description

(B = baseline; 3F = 3 month follow-up; 6F = 6 month follow up; 12F = 12 month follow-up)
^awhile blood collection for HbA1c at 12 month is mandatory, it is only done at baseline, 3 and 6 month if missing from the electronic health information system or recorded within more than 4 months prior to the measurement visits

ISSN: 1471-2458