Table 3.

Summary of measurement methods used in included record*

Characteristic	Parameters	Number of records
Journal articles
Ultrasound type	B-mode	24
	Mid-range	2
	High-frequency	29
	Other	4
	Not reported	22
Measurement parameters	Epidermal	0
	Dermal	4
	Epidermal and dermal	2
	Combined epidermal and dermal	32
	Other	3
	Not reported	40
Scar characteristic measured	Fibrosis	27
	Oedema	1
	Fibrosis and oedema	10
	Other	1
	Not reported	42
Abstracts
Ultrasound type	B-mode	3
	Mid-range	0
	High-frequency	9
	Other	3
	Not reported	21
Measurement parameters	Epidermal	0
	Dermal	1
	Epidermal and dermal	4
	Combined epidermal and dermal	1
	Other	1
	Not reported	29
Scar characteristic measured	Fibrosis	2
	Oedema	0
	Fibrosis and oedema	0
	Other	0
	Not reported	34

B-mode ultrasound (<20 MHz); high-frequency: high-frequency B-mode ultrasound (>20 MHz); other: fields are expanded with additional detail in online supplemental table 3.

*A full summary of each included record is available in online supplemental table 3.

B-mode, brightness mode.