Table 2.

Demographic description. The descriptive data show the demographics of the intention-to-treat patient (ITT) population at inclusion (baseline), as well as the per-protocol (PP) patients, providing patient-reported outcomes at the five- and ten-year follow-ups.

Continuous variables Mean [STDEV; Median] (Range)		Baseline (ITT) (N ​= ​51a)	5 years (PP) (N ​= ​40a)	10 years (PP) (N ​= ​37a)
Age at amputation (years)		32 [14; 31] (12–64)	32 [15; 31] (12–64)	32 [14; 31] (12–60)
Age at inclusion (years)		44 [12; 46] (20–65)	44 [13; 46] (20–65)	44 [12; 46] (20–62)
Time from amputation to S1 (years)		12 [11; 7] (1–42)	12 [11; 7] (1–42)	12 [11; 8] (1–42)
Weight at inclusion (kg)		74 [17; 75] (40–115)	74 [17; 75] (45–115)	74 [17; 75] (45–115)
Height at inclusion (cm)		172 [10; 174] (154–194)	173 [11; 173] (155–194)	173 [10; 174] (155–194)
BMI at inclusion		25 [4; 24] (16–38)	25 [5; 24] (16–38)	25 [5; 24] (16–38)
Nominal variables n (%)		Baseline	5 years	10 years
Sex	Female	23 (45%)	19 (47.5%)	18 (49%)
	Male	28 (55%)	21 (52.5%)	19 (51%)
Reason for amputation	Trauma	33 (64.7%)	26 (65%)	25 (68%)
	Tumour	12 (23.5%)	9 (22.5%)	9 (24%)
	Infection	4 (7.8%)	3 (7.5%)	1 (2.7%)
	Arterial embolus	2 (3.9%)	2 (5%)	2 (5.4%)
Unilateral/bilateral TFAb	Unilateral	45 (88%)	35 (87.5%)	32 (86%)
	Bilateral	6 (12%)	5 (12.5%)	5 (14%)
Smoker at inclusion	Smoker	11 (22%)	8 (20%)	6 (16%)
	Nonsmoker	40 (78%)	32 (80%)	31 (84%)
Socket-prosthesis user at inclusionc	User	42 (82%)	34 (85%)	31 (84%)
	Nonuser	9 (18%)	6 (15%)	6 (16%)
Nationality	Swedish	25 (49%)	20 (50%)	18 (49%)
	Other nationality	26 (51%)	20 (50%)	19 (51%)

^aN refers to the number of individuals who have completed PROs.

^bTFA ​= ​Transfemoral amputation

^cA prosthetic user was defined as one normally wearing a prosthesis at least one day per week.