Table 1.

Source and timing of measures

Outcome measures	Source	Timing
		Peri- operative	Days one to seven diary	Six weeks
BMI, ASA grade	Case Report Form (CRF)	▲
Duration of operation, intra-operative complication rates, conversion rates, surgeon’s perception of single port approach	CRF	▲
Intervention received	CRF	▲
Body Image Questionnaire (BIQ) [20]	Participant Questionnaire (PQ)			▲
Hospital Experience Questionnaire (HEQ) [20]	PQ			▲
Pain Numerical Rating Scale (NRS)	PQ		▲	▲
Use of analgesics	CRF and PQ	▲	▲	▲
Time to return to usual activities	PQ			▲
Hospital re-admissions	CRF and PQ			▲
Complications (for example, infection, port-site hernia)	CRF and PQ	▲		▲