Table 1.

Development SF-SarQoL

Domain/item		Delphi methoda		Item-impact rankingb,c		Final decision
		Consensus inclusion	Consensus exclusion	Sarcopenic group	Non-sarcopenic group
Physical and mental health
1.1 Loss of arm strength		x		3	6	IN
1.2 Loss of leg strength		x		1	4	IN
1.4 Loss of energy			x	4	5
2 Muscle pain			x	2	3
6 Feeling old			x	6	2
7 Feeling of muscle weakness			x
8 Feeling of being physically weak				5	1	IN
16 Feeling of being frail				7	7
Locomotion
9.1 Limitation in walking time		x		4	4
9.2 Limitation in number of outings			x	6	6
9.3 Limitation in walking distance		x		2	2
9.4 Limitation in walking speed		x		1	1	IN
9.5 Limitation in steps length			x	7	7
10.1 Feeling of fatigue when walking		x		3	3	IN
10.2 Need of recovery time when walking				7	8
10.3 Difficulties to cross a road fast enough				9	9
10.4 Difficulties to walk on uneven ground			x	4	5
Body composition
1.3 Loss of muscle mass				2	2	IN
13 Physical change			x	1	1
14 Weight change (loss or gain)			x
15 Upset with change			x
Functionality
1.5 Loss of physical capacity		x		2	2	IN
1.6 Loss of flexibility			x	3	1
11 Balance problems				5	4	IN
12 Falls occurrence		x		13	8
17.1 Climbing one flight of stairs		x		11	13
17.2 Climbing several flights of stairs			x	6	6
17.3 Climbing stairs without a banister				8	11
17.4 Crouching or kneeling				4	5
17.5 Stooping				10	10
17.6 To stand up from the floor without any support				1	3	IN
17.7 Get up from a chair		x		9	7
17.8 To stand from a sitting position				12	12
18 Limitation of movement		x		7	9	IN
20 Sexuality			x	14	14
Activities of daily living
17.11 Take public transportation			x	14	14
17.12 To get in/out a car			x	12	12
3.1 Difficulty during light physical effort				5	9
3.2 Fatigue during light physical effort		x		2	7
3.3 Pain during light physical effort			x	4	8
4.1 Difficulty during moderate physical effort				6	6	IN
4.2 Fatigue during moderate physical effort		x		3	3	IN
4.3 Pain during moderate physical effort			x	7	5
5.1 Difficulty during intense physical effort			x	10	2
5.2 Fatigue during intense physical effort			x	9	1
5.3 Pain during intense physical effort			x	11	4
17.9 Carrying heavy objects			x	1	10	IN
17.10 Opening a bottle or a jar				8	11
17.13 Shopping			x	15	15
17.14 Household tasks				13	13
Leisure activities
21 Change in physical activities			x	1	1
22 Change in leisure activities				2	2	IN
Fears
19	Fear of getting hurt Fear of not succeeding Fear of being tired Fear of falling

^aEmpty cells indicate that the 70% agreement threshold was not reached

^bBecause certain questions in the SarQoL questionnaire are conditional on other questions (i.e. “If yes on previous question, then …”), item-impact scores could not be calculated for items 7, 14, 15 and 19

^cItems are ranked from most impactful (1) to least impactful